Artykuły w czasopismach: „Al SiC MMCs”

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Huang, Song Jeng, Yo Zhi Dai i Yeau Ren Jeng. "Volume Fraction Effects of Silicon Carbide on the Wear Behavior of SiC_p-Reinforced Magnesium Matrix Composites". Advanced Materials Research 152-153 (październik 2010): 11–18. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.11.

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This paper investigated the volume fraction effect of micro-sized SiC on the tribological behavior of SiCp reinforced AZ91D Mg-based metal-matrix composites (MMCs). The Mg MMCs were prepared by the melt-stirring technique for wear tests. The hardness and coefficient of friction of Mg MMCs increase as increasing volume fraction of SiC particle in MMCs. The SiCp/AZ91D MMCs exhibit superior wear resistance under lower and moderate sliding condition. However, the effects of the SiC particle reinforcements on wear resistance are not as conclusive under severe sliding condition (50N-1500 rpm for all vol.% of MMCs, 50N-1000rpm for 3 vol. % MMCs), since the matrix of MMCs were softened at elevated temperature under such severe condition. However, the incorporation of SiC particles could enhance the wear resistance of AZ91D matrix alloy for most of the sliding conditions.

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Thirugnanam, S., G. Ananth, T. Muthu Krishnan i Tewedaj Tariku Olkeba. "Microstructure and Mechanical Characteristics of Stir-Casted AA6351 Alloy and Reinforced with Nanosilicon Carbide Particles". Journal of Nanomaterials 2023 (20.04.2023): 1–6. http://dx.doi.org/10.1155/2023/7858827.

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The main aim of this research is to analyze the mechanical performances of the influence of silicon carbide (SiC) particles with AA6351 aluminum alloy. The aluminum metal matrix composites were prepared with liquefying stir casting to produce the metal matrix composites (MMCs). The following weight fractions are AA6351-0% SiC, AA6351-2.5% SiC, AA6351-5% SiC, and AA6351-7.5% SiC utilized to compose the MMCs. The mechanical performances like hardness, flexural, impact, compressive, and tensile studies were investigated on the processed MMCs. The scanning electron microscope (SEM) was employed to examine the strengthened particle of SiC. During the SEM examinations, uniformly dispersed SiC-strengthened particles were analyzed. The entire MMCs specimens achieve greater mechanical characteristics; the specimen fabricated with a maximum volume fraction of 7.5 wt% of SiC accumulates higher strength than the other volume fractions samples. The SiC plays a very tedious role in improving mechanical attributes. The fabricated MMCs were highly utilized in the applications of automotive and aerospace usages. This application is fully employed with lesser weight and maximum strength conditions to fulfill the mechanical performances. The stir-casting process was a highly efficient technique to compose better MMCs to achieve greater strength.

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He, Chun Lin, Jian Ming Wang i Qing Kui Cai. "Effect of SiC Particle Size on Microstructure and Tensile Behavior of Aluminum Matrix Composites". Advanced Materials Research 183-185 (styczeń 2011): 2129–33. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.2129.

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The aluminum metal matrix composites (Al MMCs) reinforced by SiC particles with different sizes (25 nm, 150 nm and 3.5 m) were fabricated by powder metallurgy technique, and the microstructure and tensile properties of the Al MMCs were investigated. When the volume fraction of SiC particles is fixed to be 5 %, the Al MMCs reinforced by nanosized and submicron particles exhibit much higher ultimate tensile strength and yield strength, and much lower ductility compared with those of the non-reinforced aluminum. However, for the MMC reinforced by 3.5 m SiC particles, almost no strengthening effect is found. The strengthening effect of the Al MMCs is analyzed in terms of dislocation mechanism. Moreover, the tensile fracture surface shows that the damage mechanism of the Al MMCs can be changed as the size of SiC particles is changed.

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Cui, Yong Yan, Shi Ming Hu i Zhen Xing Yang. "Reserach on Rheology of Biodegradable Soy Protein Materials". Advanced Materials Research 183-185 (styczeń 2011): 2134–38. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.2134.

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The aluminum metal matrix composites (Al MMCs) reinforced by SiC particles with different sizes (25 nm, 150 nm and 3.5 μm) were fabricated by powder metallurgy technique, and the microstructure and tensile properties of the Al MMCs were investigated. When the volume fraction of SiC particles is fixed to be 5 %, the Al MMCs reinforced by nanosized and submicron particles exhibit much higher ultimate tensile strength and yield strength, and much lower ductility compared with those of the non-reinforced aluminum. However, for the MMC reinforced by 3.5 m SiC particles, almost no strengthening effect is found. The strengthening effect of the Al MMCs is analyzed in terms of dislocation mechanism. Moreover, the tensile fracture surface shows that the damage mechanism of the Al MMCs can be changed as the size of SiC particles is changed.

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Noori, Muna, Hazim Faleh, Chisamera Mihai, Gigel Neagu, Florin Ştefănescu i Eduard Marius Stefan. "Properties of Aluminium-SiC_P Composites (Review)". Advanced Materials Research 1143 (luty 2017): 72–78. http://dx.doi.org/10.4028/www.scientific.net/amr.1143.72.

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Aluminium-based Metal matrix composites (MMCs) have become increasingly used for structural applications in various industrial sectors because of their excellent specific stiffness and specific strength. Discontinuously reinforced (DR) Al/SiC metal-matrix composites (MMCs) are modern, lightweight materials which have a very attractive combination of material properties and price. The use of DR Al/SiC MMCs is mostly limited to the military and aerospace, however, these materials are now beginning to penetrate civilian applications. Besides the mechanical behavior, knowledge of the corrosion resistance of DR Al/SiC MMCs is very important, and so the corrosion resistance of Al/SiC composites has been investigated and discussed in comparison with a conventional Al alloy of similar composition.

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He, Chun Lin, Jian Ming Wang i Qing Kui Cai. "Effects of Particle Size and Volume Fraction on Extrusion Texture of SiC_p/Al Metal Matrix Composites". Advanced Materials Research 194-196 (luty 2011): 1437–41. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1437.

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The texture development was investigated in the extruded Al and Al metal matrix composites (MMCs) reinforced with SiC particles of different sizes and volume fractions. During extrusion, both the unreinforced Al and the MMCs develop a strong fiber texture with two components: <111> and <100>. When SiC is introduced into aluminum, the main component of texture is not modified, but the intensity of the component evolves with the volume fraction and average size of SiC particles. For the MMCs reinforced with 3.5μm SiC particles, the texture intensity of the Al matrix tends to decrease as the SiC volume fraction increases, and it is lower than that in the unreinforced Al. However, for the MMCs reinforced with 25 nm and 150 nm SiC particles, the texture intensity of the Al matrix is higher than that in the unreinforced matrix, and it increases with increasing the SiC volume fraction. It is found that superfine particles may introduce some new component into the deformation texture, and the texture intensity increases as the SiC particle size decreases.

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He, Chun Lin, De Yuan Lou, Jian Ming Wang i Qing Kui Cai. "Tensile Properties of Aluminum Matrix Composites Reinforced with Submicron SiC Particles". Advanced Materials Research 150-151 (październik 2010): 538–41. http://dx.doi.org/10.4028/www.scientific.net/amr.150-151.538.

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The submicron SiC particulates reinforced aluminum metal matrix composites (Al MMCs) were fabricated by powder metallurgy technique, and their microstructure and tensile properties were investigated. The results show that the Al MMCs obviously exhibit an increase in ultimate tensile strength and yield strength due to both dislocation density strengthening and dispersion strengthening mechanisms, and a decrease in elongation with increasing concentration of SiC particles compared with those of the unreinforced Al due to the agglomeration of SiC superfine particles. The tensile fracture surfaces show that the damage mechanism of the Al MMCs can change with the concentrations of SiC superfine particles and the cracks easily originate from the SiC agglomerations.

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Altinkök, Necat. "Mechanical Properties and Wear Behaviour of Al2O3/SiCp Reinforced Aluminium-Based MMCs Produced by the Stir Casting Technique". Advanced Composites Letters 22, nr 4 (lipiec 2013): 096369351302200. http://dx.doi.org/10.1177/096369351302200402.

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In this study, initially Al2O3/SiC powder mix was prepared by reacting of aqueous solution of aluminium sulphate, ammonium sulphate and water containing SiC particles at 1200°C. 10 wt% of this hybrid ceramic powder with different sized SiC particles was added to a liquid Al matrix alloy during mechanical stirring between solidus and liqudus under inert conditions. Then hybrid Metal Matrix Composites (MMCs) was produced. The effect of reinforced particle size on tensile strength, bending strength, hardness resistance and wear resistance properties of hybrid reinforced MMCs were investigated. The mechanical test results revealed that bending, tensile strength and hardness resistance of the composites increased with decrease in ductility, with decrease size of the reinforcing SiC particulates in the aluminium alloy metal matrix. The wear behaviour of the hybrid ceramic reinforced aluminium matrix composites was investigated using pin-on-disc test at room temperature under dry conditions. Wear tests showed that the wear resistance of MMCs increased with increasing reinforced Al2O3/SiC particle size. Comparing the fine particle size MMCs with the coarse particle size MMCs were easily pulled out whole from the matrix. Microstructural examination showed that as well as coarse SiC particle reinforcement, a fine alumina particle reinforcement phase was observed within the aluminium matrix (A332).

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Ravikumar, M., R. Suresh, H. N. Reddappa, Y. S. Ram Mohan, C. R. Nagaraja i E. R. Babu. "Investigations on tensile fractography and wear characteristics of Al7075-Al2O3-SiC Hybrid Metal Matrix Composites routed through liquid metallurgical techniques". Frattura ed Integrità Strutturale 15, nr 56 (28.03.2021): 160–70. http://dx.doi.org/10.3221/igf-esis.56.13.

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The Al2O3-SiC reinforced Al7075 Metal Matrix Composite (MMCs) is fabricated through liquid metallurgical technique. Ceramic particulates were amalgamated into aluminium alloy to achieve improved mechanical properties and wear resistance. Al-7075/Al2O3/SiC hybrid MMCs were produced by reinforcing 2%, 3%, 4% and 5% of Al2O3 and 3%, 5% and 7% of SiC particles. Microstructural analysis was carried out to evaluate the uniform dispersal of reinforcing particulates within the base matrix. The output results indicate that the mechanical properties of the hybrid MMCs enhanced by increase the wt. % of ceramic particulates. Tensile fractography results show the internal fracture structure of the tensile test specimens in which the particulates fracture and pullouts were observed. The wear characteristics of developed composites are studied using pin on disc apparatus. The high wear resistance is observed at 5% Al2O3 + 7% SiC reinforced MMCs.

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Afandi, Yusuf, Anne Zulfia, Dedi Priadi i I. Nyoman Jujur. "Formation and Characterization of MMCs Alloy Al-5%Cu-4%Mg/SiC(p) by Thixoforming Process". Advanced Materials Research 789 (wrzesień 2013): 56–59. http://dx.doi.org/10.4028/www.scientific.net/amr.789.56.

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Metal matrix composites (MMCs) are new materials, which are very essential for industry manufacture applications, such as automotive, aerospace and military. So far, an enhancement of the MMCs hardness has been interestingly studied. In this paper, we study the formation of Al-5%Cu-4%Mg matrix with the reinforcement of SiC by thixoforming process. Several important parameters for increasing the MMCs hardness, such as volume fraction of reinforcement, ageing time and temperature, are investigated. It is found from the microstructure analysis that the distribution of SiC particles is homogen for both MMCs with 5 vf.% SiC and 10 vf.% SiC. We also found fine, globular and non-dendritic structures, indicating that an appropriate structure of thixoforming process is obtained. From the hardness measurement, the hardness values are influenced by the reinforcement, thixoprocess and ageing. Our experimental results indicates that such parameters have to be considered in order to obtain the optimum performance of Al-5%Cu-4%Mg matrix.

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Vanarotti, Mohan, P. Shrishail, B. R. Sridhar, K. Venkateswarlu i S. A. Kori. "Surface Modification of SiC Reinforcements & its Effects on Mechanical Properties of Aluminium Based MMC". Applied Mechanics and Materials 446-447 (listopad 2013): 93–97. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.93.

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Aluminum (A356)-SiC metal matrix composites were fabricated by using liquid metallurgy route. To improve the interfacial bonding between the Al and SiC, an attempt has been made to coat the SiC particles with Ni and Cu. Electroless process was used for coating the reinforced particle. This surface modification due to electroless coating on SiC particles was confirmed with SEM/ EDS analysis. Processing parameters such as melt temperature, stirring speed, stirring time, and preheating temperature were optimized. SiC content in Al-SiC MMC were taken from 5 to 15% and effect of Ni and Cu coating was studied using hardness measurements. Influence of coated SiC particles in Al-SiC showed significant improvement in hardness values. Moreover, micro structural examination clearly demonstrated that Cu coating on SiC particles resulted in good metallurgical boding as compared to SiC particles with Ni coating. As a result, the hardness values of Al-SiC (Cu) exhibited better hardness values as compared to Al-SiC (Ni) MMCs. As expected, high SiC content in types of Al-SiC MMCs showed high hardness values as compared to low SiC content and base alloy. The present investigation suggests that Cu coating on SiC particles are more suitable as compared to Ni coating on SiC particles to synthesis Al-SiC MMCs.

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Abd El Aal, Mohamed Ibrahim, Hossam Hemdan El-Fahhar, Abdelkarim Yousif Mohamed i Elshafey Ahmed Gadallah. "The Mechanical Properties of Aluminum Metal Matrix Composites Processed by High-Pressure Torsion and Powder Metallurgy". Materials 15, nr 24 (10.12.2022): 8827. http://dx.doi.org/10.3390/ma15248827.

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Al-Al2O3 and SiC metal matrix composites (MMCs) samples with different volume fractions up to 20% were produced by high-pressure torsion (HPT) using 10 GPa for 30 revolutions of Al-Al2O3, and SiC and powder metallurgy (PM). The effect of the processing method of micro-size Al MMCs on the density, microstructure evolution, mechanical properties, and tensile fracture mode was thoroughly investigated. HPT processing produces fully dense samples relative to those produced using powder metallurgy (PM). The HPT of the Al MMCs reduces the Al matrix grain size and fragmentation of the reinforcement particles. The Al matrix average grain size decreased to 0.39, 0.23, and 0.2 µm after the HPT processing of Al, Al-20% Al2O3, and SiC samples. Moreover, Al2O3 and SiC particle sizes decreased from 31.7 and 25.5 µm to 0.15 and 0.13 µm with a 99.5% decrease. The production of ultrafine grain (UFG) composite samples effectively improves the microhardness and tensile strength of the Al and Al MMCs by 31–88% and 10–110% over those of the PM-processed samples. The good bonding between the Al matrix and reinforcement particles noted in the HPTed Al MMCs increases the strength relative to the PM samples. The tensile fracture surface morphology results confirm the tensile properties results.

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Mohan Krishna, S. A., T. N. Shridhar i L. Krishnamurthy. "Computational investigation on thermal expansivity behavior of Al 6061–SiC–Gr hybrid metal matrix composites". International Journal of Computational Materials Science and Engineering 04, nr 03 (wrzesień 2015): 1550016. http://dx.doi.org/10.1142/s2047684115500165.

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Metal matrix composites (MMCs) have been regarded as one of the most principal classifications in composite materials. The thermal characterization of hybrid MMCs has been increasingly important in a wide range of applications. The coefficient of thermal expansion is one of the most important properties of MMCs. Since nearly all MMCs are used in various temperature ranges, measurement of coefficient of thermal expansion (CTE) as a function of temperature is necessary in order to know the behavior of the material. In this research paper, the evaluation of thermal expansivity has been accomplished for Al 6061, silicon carbide ( SiC ) and Graphite ( Gr ) hybrid MMCs from room temperature to 300°C. Aluminum ( Al )-based composites reinforced with SiC and Gr particles have been prepared by stir casting technique. The thermal expansivity behavior of hybrid composites with different percentage compositions of reinforcements has been investigated. The results have indicated that the thermal expansivity of the different compositions of hybrid MMCs decreases by the addition of Gr with SiC and Al 6061. Few empirical models have been validated for the evaluation of thermal expansivity of composites. Using the experimental values namely modulus of elasticity, Poisson's ratio and thermal expansivity, computational investigation has been carried out to evaluate the thermal parameters namely thermal displacement, thermal strain and thermal stress.

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Krishna, S. A. Mohan, T. N. Shridhar i L. Krishnamurthy. "Computational investigation on thermal conductivity behavior of Al 6061–SiC–Gr hybrid metal matrix composites". International Journal of Computational Materials Science and Engineering 04, nr 04 (grudzień 2015): 1550021. http://dx.doi.org/10.1142/s2047684115500219.

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Metal matrix composites (MMCs) are regarded to be one of the most principal classifications in composite materials. The thermal characterization of hybrid MMCs has become increasingly important in a wide range of applications. Thermal conductivity is one of the most important properties of MMCs. Since nearly all MMCs are used in various temperature ranges, measurement of thermal conductivity as a function of temperature is necessary in order to know the behavior of the material. In the present research, evaluation of thermal conductivity has been accomplished for aluminum alloy (Al) 6061, silicon carbide (SiC) and graphite (Gr) hybrid MMCs from room temperature to [Formula: see text]C. Al-based composites reinforced with SiC and Gr particles have been prepared by stir casting technique. The thermal conductivity behavior of hybrid composites with different percentage compositions of reinforcements has been investigated using laser flash technique. The results have indicated that the thermal conductivity of the different compositions of hybrid MMCs decreases by the addition of Gr with SiC and Al 6061. Few empirical models have been validated concerning with the evaluation of thermal conductivity of composites. Using the experimental values namely density, thermal conductivity, specific heat capacity and enthalpy at varying temperature ranges, computational investigation has been carried out to evaluate the thermal gradient and thermal flux.

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Zhou, Y. C., S. G. Long, Z. P. Duan i T. Hashida. "Thermal Damage in Particulate-Reinforced Metal Matrix Composites". Journal of Engineering Materials and Technology 123, nr 3 (16.01.2001): 251–60. http://dx.doi.org/10.1115/1.1362675.

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Thermal damage of SiC particulate-reinforced aluminum composites (MMCs) caused by laser thermal shock was investigated. The damage was induced by a combination of laser beam thermal shock and mechanical loads. The MMCs have two kinds of particle distributions, one is uniform and another is heterogeneous. The damage initiation, crack propagation, as well as the failure evolution, were observed. A damage parameter was defined and it was tested. One found that the damage mechanism was very different for crack initiation and crack propagation and for MMCs with different spatial particle distributions. The mechanism of MMCs failure is discussed by the ideas of shear stress transfer between matrix and reinforcement. The discussion can explain the distinct mechanism of damage and failure in SiC particulate-reinforced aluminum composites.

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Ramesh, C. S., M. L. Shreeshail, Harsha R. Gudi i Khan Zulfiqar. "Air Jet Erosion Wear Behavior of Al6061-SiC-Carbon Fibre Hybrid Composite". Materials Science Forum 773-774 (listopad 2013): 547–54. http://dx.doi.org/10.4028/www.scientific.net/msf.773-774.547.

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Currently, the focus in materials development is on processing of hybrid metal matrix composites (MMCs) in particular aluminum (Al) based owing to their flexibility in achieving tailor made properties. Till date, only processing, characterization of mechanical and adhesive wear behavior of various hybrid MMCs have received much attention. However, solid erosion wear of hybrid MMCs has not yet been reported. This assessment will further enlarge the range of applications of hybrid MMCs in particular for components in operation for military applications especially in desert areas. In the light of the above, the present paper discusses the air jet erosion behavior of developed Al6061-SiC-carbon fibre hybrid composite prepared by combination of powder metallurgy and casting process followed by hot extrusion at temperature of 550°C using extrusion ratio of 1:4. The solid sand erodent particle size used was 312 μm while the operating pressure and velocity was maintained at 1.4 bar and 30 m/sec respectively. The adopted feed rate of the sand particles was 2.0 g/min with standoff distance being 10 mm. The sample size was 25 mm x 25 mm x 10 mm. The effect of silicon carbide (SiC), Carbon fibre (Cf), test duration and angle of impingement of the erodent on the erosion wear loss of the developed hybrid composite will be discussed at length.

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Huang, Song Jeng, Yeong-Maw Hwang i Y. S. Huang. "Grain Refinement of AZ61/SiCp Magnesium Matrix Composites for Tubes Extruded by Hot Extrusion Processes". Key Engineering Materials 528 (listopad 2012): 135–43. http://dx.doi.org/10.4028/www.scientific.net/kem.528.135.

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Magnesium (Mg) alloys are gaining more recognition as a lightest structural material for light-weight applications, due to their low density and high stiffness-to-weight ratio. Nevertheless, their ductility is still not good for further metal forming and their strength is not large enough for real structure applications. The aim of this paper is to develop new magnesium metal matrix composites (Mg MMCs) reinforced with SiC particles by the stir-casting method for the hot extrusion processes to produce tubes. AZ61/SiCp MMCs ingots reinforced with 1, 2, and 5 wt% SiC particles are fabricated by the melt-stirring technique. AZ61/SiCp MMCs tubes are manufactured by hot extrusion using a specially designed die-set for obtaining uniform thickness distribution tubes. Finally, the mechanical properties of the reinforced AZ61/SiCp MMCs and Mg alloy AZ61 tubes are compared with those of the billets to manifest the advantages of extrusion processes and addition of SiC particles. The microstructures of the billet and extruded tubes are also observed. Obvious grain size refinement both by addition of particles and extrusion process are discovered.

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He, Chun Lin, Ying Ying Bai, De Yuan Lou, Guo Feng Ma, Jan Ming Wang, Zhao Fu Du i Dong Liang Zhao. "Corrosion Resistance of SiC_p/Al Metal Matrix Nanocomposites". Advanced Materials Research 773 (wrzesień 2013): 468–71. http://dx.doi.org/10.4028/www.scientific.net/amr.773.468.

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The effect of volume fraction of SiC nanoparticles on the corrosion resistance of the SiCp/Al metal matrix composites (MMCs) in 3.5 wt.% NaCl aqueous solution were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The results show that pitting susceptibility is about the same for the nanocomposites and the correspondingly unreinforced matrix metal Al, and the corrosion potentials of the MMCs are about 50 mV-60 mV more positive than that of the unreinforced Al, and is independent of the volume fraction of SiC nanoparticles. The corrosion resistance for the nanocomposite slightly decreases when the volume fraction increases due to both SiC nanoparticle agglomeration and promoting galvanic corrosion between SiC and Al.

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Feldshtein, Eugene E., Larisa N. Dyachkova i Justyna Patalas-Maliszewska. "On Investigating the Microstructural, Mechanical, and Tribological Properties of Hybrid FeGr1/SiC/Gr Metal Matrix Composites". Materials 14, nr 1 (1.01.2021): 174. http://dx.doi.org/10.3390/ma14010174.

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In recent years, studies of different properties of hybrid metal matrix composites, as well as very detailed issues, have been published. In this article, ready-made iron, graphite, and silicon carbide powders were used to produce the base material and composites. An analysis of some microstructural and mechanical properties, as well as the tribological behavior of metal matrix composites (MMCs), based on FeGr1 sintered material with the single and hybrid addition of a silicon carbide and graphite was undertaken. During the study, the flexural and compressive strength of MMCs were analyzed and changes of the momentary coefficient of friction, the temperature of friction, as well as wear rates of the MMCs tested were monitored. Based on the results, it was revealed that wear rates decreased 12-fold in comparison to the base material when SiC or SiC + Gr were added. Further research into MMCs with ceramic particle additives is proposed.

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Midling, Ole Terje, i Øystein Grong. "Joining of Particle Reinforced Al-SiC MMCs". Key Engineering Materials 104-107 (lipiec 1995): 355–72. http://dx.doi.org/10.4028/www.scientific.net/kem.104-107.355.

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Huda, D., M. A. El-Baradie i M. S. J. Hashmi. "Hardness Modelling for Al-6061/SiC MMCs". Key Engineering Materials 104-107 (lipiec 1995): 825–36. http://dx.doi.org/10.4028/www.scientific.net/kem.104-107.825.

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Gxowa, Zizo, Sigqibo Templeton Camagu, Gonasagren Govender i Manuel Filipe Pereira. "Reinforcement of 2124 Al Alloy with Low Micron SiC and Nano Al₂O₃ via Solid-State Forming". Materials Science Forum 828-829 (sierpień 2015): 172–78. http://dx.doi.org/10.4028/www.scientific.net/msf.828-829.172.

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A powder metallurgical process was used to fabricate Metal Matrix Composites (MMCs). A 2124 aluminium alloy was reinforced with 5 and 10 vol.% of Al2O3(40-70nm) to form Metal Matrix Nano Composites (MMNCs) as well as 10 and 15 vol.% of SiC (1-10µm) to fabricate low micron MMCs. It was observed that the nano-sized Al2O3particles were evenly dispersed in the aluminium matrix while a lot of loose SiC particles settled on the grain boundaries in the low micron MMCs. The relative density of all the composites increased due to sintering, however full densification was not achieved. This result was attributed to the hindered motion of dislocations, grains and grain boundaries by reinforcing particles. The 2124-Al/10%-SiC composite was cold extruded and the extruded part fractured. A metallographic evaluation was carried out and it was deduced that the mode of failure was intergranular cracking. Hardness tests performed after sintering indicated that hardness increased with an increase in volume fraction of reinforcement in the matrix. Annealing of the extruded part resulted in a decrease in hardness.

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Ugur, Α., H. Gokkaya, G. Sur i N. Eltugral. "Friction Coefficient and Compression Behavior of Particle Reinforced Aluminium Matrix Composites". Engineering, Technology & Applied Science Research 9, nr 1 (16.02.2019): 3782–85. http://dx.doi.org/10.48084/etasr.2507.

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Metal matrix composites (MMCs) are materials used in a large range of engineering applications. In this paper, the relatively low-cost stir casting is evaluated with the use for Silisyum Carbite (SiC) as reinforcement and Al7075 alloy as matrix to produce MMCs with varied reinforcement from 10% to 18%. The produced composites were examined, and their wear behavior was investigated. The results showed that the mechanical properties of the MMCs decrease with the increase of the mass percentage of reinforcement and compression.

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Ravikumar, M., H. N. Reddappa, R. Suresh i M. Sreenivasa Reddy. "Experimental studies of different quenching media on mechanical and wear behavior of Al7075/SiC/Al2O3 hybrid composites". Frattura ed Integrità Strutturale 15, nr 55 (28.12.2020): 20–31. http://dx.doi.org/10.3221/igf-esis.55.02.

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The effects of SiC-Al2O3 particle in the Al alloy on the mechanical and wear characteristics of stir-casted Composites have been reported. The Al7075 is reinforced with 2, 4, 6 and 8 wt. % of (SiC + Al2O3) to manufacture the hybrid composite. Ceramic particulates were added into Al alloy to achieve the low wear rate and improving mechanical properties. Hardening of casted specimens at 480ºC for the duration of 2 hrs and the specimens were quenched into two different quenching media (water and ice cubes). Finally, age-hardening were carried out at the temperature of 160ºC for the duration of 4 hrs and cooled at room temperature. The tensile strength, hardness and wear behaviour of MMCs are evaluated on the un-treated and heat treated composite. The tensile strength and hardness of MMCs increases by incorporating SiC-Al2O3 particulates. The wear behaviour of the MMCs containing SiC-Al2O3 particulates revealed the high wear-resistance. The heat-treatment had considerably improved the properties when compared to the un-heat treated composites. The composites with the highest tensile strength, hardness and enhanced wear resistance were found in the composites quenched in ice cubes. Worned surfaces of the composite specimens were studied by using SEM and XRD analysis

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Himanshu, Prasad Raturi, Prasad Lalta, Pokhriyal Mayank i Tirth Vineet. "An Estimating the Effect of Process Parameters on Metal Removal Rate and Surface Roughness in WEDM of Composite Al6063/SiC/Al2O3 by Taguchi Method". Strojnícky casopis – Journal of Mechanical Engineering 67, nr 2 (1.11.2017): 25–36. http://dx.doi.org/10.1515/scjme-2017-0015.

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AbstractThe present study was focused on the fabrication of metal matrix and hybrid metal matrix composites through stir casting process. The Aluminium 6063 was used as base material and SiC/Al2O3 were used as reinforcement with varying weight %. The parametric study on a wire-cut electro discharge machine was carried out by using Taguchi Method. A statistical analysis of variance (ANOVA) was performed to identify the process parameters that were statistically significant. It was observed that the MRR decreases with increase in the percentage weight fraction of SiC and Al2O3 particles in the MMCs and HMMCs. Whereas, the surface roughness parameter increases with increase in the percentage weight fraction of SiC and Al2O3 particles due to the hardness of MMCs and HMMCs composites.

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Patel, Murlidhar, Bhupendra Pardhi, Manoj Pal i Mukesh Kumar Singh. "SiC Particulate Reinforced Aluminium Metal Matrix Composite". Advanced Journal of Graduate Research 5, nr 1 (10.09.2018): 8–15. http://dx.doi.org/10.21467/ajgr.5.1.8-15.

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Al or Al alloy Metal Matrix Composites have wide range of applications i.e. aerospace, automobile etc. due to its lightweight, high tensile strength, high wear resistance. This review paper characterized the SiC particulate reinforced Al Metal Matrix Composites. The SiC particulates are dispersed in Al or Al alloy by liquid state processing route and solid-state processing route. Stir casting liquid processing route has been followed by no. of researchers due to its simplicity and low processing cost and at the time of reinforcement small amount of Mg is added to increase the wettability of SiC in molten Al or Al alloy. When Al or Al alloy reinforced with SiC, then its mechanical and tribological properties are enhanced. The effect of particle size, weight or volume fraction of the SiC on density, porosity, hardness, impact toughness, tensile strength, ductility, sliding wear resistance, slurry erosion resistance, erosion-corrosion resistance, corrosion resistance and fatigue strength of Al or Al alloy MMCs are reported. The effect of extrusion and machinability of the SiC particulate reinforced Al MMCs are also discussed in this review article.

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Chiu, Chun, i Hsun-Hsiang Chang. "Al0.5CoCrFeNi2 High Entropy Alloy Particle Reinforced AZ91 Magnesium Alloy-Based Composite Processed by Spark Plasma Sintering". Materials 14, nr 21 (29.10.2021): 6520. http://dx.doi.org/10.3390/ma14216520.

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In this study, AZ91 magnesium-alloy-based metal matrix composites (MMCs) reinforced with 10 wt% of Al0.5CoCrFeNi2 high-entropy alloy (HEA) particles and SiC particles were prepared by a spark plasma sintering (SPS) process at 300 °C. The effects of reinforcements on the microstructure and mechanical properties of AZ91-based MMCs were studied. The results showed that AZ91–HEA composite consisted of α-Mg, Mg17Al12 and FCC phases. No interfacial reaction layer was observed between HEA particles and the Mg matrix. After adding HEA into AZ91, the compressive yield strength (C.Y.S) of the AZ91–HEA composite increased by 17% without degradation of failure strain. In addition, the increment in C.Y.S brought by HEA was comparable to that contributed by commonly used SiC reinforcement (15%). A relatively low porosity in the composite and enhanced interfacial bonding between the α-Mg matrix and HEA particles make HEA a potential reinforcement material in MMCs.

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Poovazhagan, L., K. Rajkumar, P. Saravanamuthukumar, S. Javed Syed Ibrahim i S. Santhosh. "Effect of Magnesium Addition on Processing the Al-0.8 Mg-0.7 Si/SiC_p Metal Matrix Composites". Applied Mechanics and Materials 787 (sierpień 2015): 553–57. http://dx.doi.org/10.4028/www.scientific.net/amm.787.553.

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Metal matrix composites (MMCs) play a vital role in today’s engineering industries. Stir casting is one of the most inexpensive methods for the production of particulate reinforced metal matrix composites. However there are few problems encountered in stir casting such as the problem of poor wettability of the reinforcement particles in the matrix metal. The reinforcement particles have the tendency to either settle at the bottom of the crucible or they tend to float at the top of molten metal. This is due to the greater surface tension of the molten metal. Various techniques are available to improve the wettability of the ceramic particles in metal matrix which includes Particle treatment, Particle coating and Addition of alloying agent. In this work, Magnesium (Mg) was used as the alloying element to improve the wettability of SiC particles in the Al matrix. Mg is used to reduce the surface tension of molten aluminum (Al) thus promoting proper wetting. To understand the effect of Mg on improving the wettability of SiC in aluminum matrix, different weight percentages of SiC particles reinforced aluminum alloy 6061(AA6061) based MMCs were fabricated in stir casting method by adding Mg as alloying element. The cast specimens were subjected to microstructural analysis, tension tests and hardness tests. Results showed that addition of Mg with SiC in AA6061 matrix significantly improved the wetting between Al and SiC; subsequently MMCs possessed enhanced mechanical properties.

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Laxman, Laxman, i Dr Kishan Lal. "Effects of Electrical Parameters during Non conventional Machining of Al/Sic Metal Matrix Composites by Electrical Discharge Machine". Journal of University of Shanghai for Science and Technology 23, nr 07 (14.07.2021): 690–99. http://dx.doi.org/10.51201/jusst/21/07208.

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Particulate Reinforced Al/SiC Metal Matrix Composites (PRALSICMMC) is gradually becoming very important materials in manufacturing industries e.g. aerospace, automotive, and automobile industries due to their superior properties such as lightweight, low density, high strength to weight ratio, high hardness, high temperature, and thermal shock resistance, superior wear and corrosive resistance, high specific modulus, high fatigue strength, etc. In this study aluminum (Al- 6063)/SiC Silicon carbide reinforced particles metal-matrix composites (MMCs) are fabricated by melt-stirring technique. The MMCs bars and circular plates are prepared with varying the reinforced particles of SiC by weight fraction ranging from 5%, 10%, 15%, and 20%. The average reinforced particles sizes of SiC are 220 mesh, 300 mesh, and 400 mesh respectively. The stirring process is carried out at 150 revs/min rotating speed by graphite impeller for 15 min. A series of machining tests are performed on EDM. Copper electrodes are used as tools (cathode), Prepared specimens of Al/SiC MMCs are used as workpiece (anode) and kerosene is used as the dielectric fluid. The Performance parameters measured during experimentation were Tool Wear Rate (g/min), Metal Removal Rate (g/min), Over Cut on diameter (mm), and Average Surface Roughness Ra (μm) for each experiment by varying Pulse Peak Current IP (2 Amp, 6 Amp, 10 Amp,14 Amp) and gap voltage Vg ( 25 Volts, 30 Volts, 35 Volts, and 40 Volts). The investigations of results are done graphically.

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Mishra, Akshansh, i Vijaykumar S. Jatti. "Prediction of Wear Rate in Al/SiC Metal Matrix Composites Using a Neurosymbolic Artificial Intelligence (NSAI)-Based Algorithm". Lubricants 11, nr 6 (14.06.2023): 261. http://dx.doi.org/10.3390/lubricants11060261.

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This research paper delves into an innovative utilization of neurosymbolic programming for forecasting wear rates in aluminum-silicon carbide (Al/SiC) metal matrix composites (MMCs). The study scrutinizes compositional transformations in MMCs with various weight percentages of SiC (0%, 3%, and 5%), employing comprehensive spectroscopic analysis. The effect of SiC integration on the compositional distribution and ratio of elements within the composite is meticulously examined. In a novel move for this field of research, the study introduces and applies neurosymbolic programming as a novel computational modeling approach. The performance of this cutting-edge methodology is compared to a traditional simple artificial neural network (ANN). The neurosymbolic algorithm exhibits superior performance, providing lower mean squared error (MSE) values and higher R-squared (R2) values across both training and validation datasets. This highlights its potential for delivering more precise and resilient predictions, marking a significant development in the field. Despite the promising results, the study recognizes that the performance of the model might vary based on specific characteristics of the composite material and operational conditions. Thus, it encourages future studies to authenticate and expand these innovative findings across a wider spectrum of materials and conditions. This research represents a substantial advancement towards a more profound understanding of wear rates in Al/SiC MMCs and emphasizes the potential of the novel neurosymbolic programming in predictive modeling of complex material systems.

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Kishore, Dr M. V. "Experimental Study to Analyze the Effect of Silicon Carbide on the Mechanical Properties on AA3103". International Journal for Research in Applied Science and Engineering Technology 10, nr 5 (31.05.2022): 2511–17. http://dx.doi.org/10.22214/ijraset.2022.42888.

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Abstract: Metal matrix composites (MMCs), such as SiC particle reinforced Al, are one of the widely known composites because of their superior properties such as high strength, hardness, stiffness, wear, and corrosion resistance. These MMC’s are widely used in aircrafts, automobiles, electronic equipment’s, and sporting goods. Hence a solution is needed to solve the issues like selection of material based on their mechanical properties. In this study aluminum (Al-3103)/SiC Silicon carbide reinforced particles metal-matrix composites (MMCs) are fabricated by induction casting and manual stirring. The MMCs bars are prepared with varying the reinforced particles by weight fraction ranging from 5%, 10%, and 15%. Different tests are carried out on these MMC and base alloy to study the mechanical properties like tensile strength, hardness, and wear rate. It is observed that the addition of silicon carbide increased the tensile strength and hardness and also the wear resistance Keywords: AA 3103, Silicon carbide, Tensile strength, wear resistance

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Şahin, Yusuf, K. Emre Öksüz i M. Şimşir. "Wear Behavior of Diamond+SiCp-Reinforced Metal Matrix Composite by Taguchi Method". Advanced Materials Research 472-475 (luty 2012): 1309–18. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.1309.

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Fe-Co based diamond-reinforced composites (D-MMCs) and diamond+SiC-reinforced composites (D+SiC-MMCs) were produced by cold pressing method. Investigation of the wear behaviors on two-body abrasive wear behavior of the composites were carried out under different conditions. 2k factorial designs of experiments were used to obtain the data in a controlled way. The wear parameters studied were sliding speed, load and sliding distance. An orthogonal array and analysis of variance (ANOVA) were employed to investigate the influence of process parameters on the wear resistance of these composites. The results indicated that the incorporation of SiC particles in the metal matrix as a secondary reinforcement increased the wear resistance. In addition to this, the applied load had the significant effect on the weight loss of both types of composites. Furthermore, a correlation was derived from the results of the experimental design by multiple regressions. Finally, confirmation of experiment was conducted to verify the predicted model.

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Rajaravi, C., B. Gobalakrishnan i P. R. Lakshminarayanan. "Effect of pouring temperature on cast Al/SiCp and Al/TiB2 metal matrix composites". Journal of the Mechanical Behavior of Materials 28, nr 1 (31.12.2019): 162–68. http://dx.doi.org/10.1515/jmbm-2019-0018.

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AbstractThe effect of pouring temperatures of an ex situ (Al/SiCp) and in situ (Al/TiB2) metal matrix composites (MMCs) synthesized using stir casting method were studied. The Al/SiCp composite were fabricated by mixing of 6wt.% of SiCp into cast A356 aluminium alloy melt and poured at diverse pouring temperatures (730∘C, 750∘C and 770∘C). The Al/TiB2 MMCs were obtained by melting A356 aluminium alloy and mixing of KBF4 and K2TiF6 precursor salts whose stoichiometric ratio composition corresponds to 6wt.% of TiB2 reinforcement and other parameters were constant (stirring speed 300 RPM and holding time 30 minutes). The composite melt was poured into the permanent mould with varied pouring temperatures (800∘C, 820∘C and 840∘C). Coarser and homogenous SiC particles were presented in the Al/SiCp MMCs, whereas, finer and uniformly distributed TiB2 particles were appeared at the MMCs of Al/TiB2. The mechanical properties viz. tensile strength, fracture toughness and hardness of Al/SiCp and Al/TiB2 MMCs were experimentally determined as per the ASTM standards and compared. Higher tensile and fracture strength were occurred at the MMCs of Al/TiB2 as compared to Al/SiCp MMCs and base alloy of aluminium as well. Maximum hardness was attained at the pouring temperatures of 820∘C and 750∘C in the MMCs of Al/ TiB2 and Al/SiCp, respectively.

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Wu, Dongxu, Congliang Huang, Yukai Wang, Yi An i Chuwen Guo. "Utilization of SiC and Cu Particles to Enhance Thermal and Mechanical Properties of Al Matrix Composites". Materials 12, nr 17 (28.08.2019): 2770. http://dx.doi.org/10.3390/ma12172770.

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In this work, SiC and Cu particles were utilized to enhance the thermal and mechanical properties of Al matrix composites. The ball-milling and cold-compact methods were applied to prepare Al matrix composites, and the uniform distribution of SiC and Cu particles in the composite confirms the validity of our preparation method. After characterizing the thermal conductivity and the compressibility of the prepared composites, results show that small particles have a higher potential to improve compressibility than large particles, which is attributed to the size effect of elastic modulus. The addition of SiC to the Al matrix will improve the compressibility behavior of Al matrix composites, and the compressibility can be enhanced by 100% when SiC content is increased from 0 to 30%. However, the addition of SiC particles has a negative effect on thermal conductivity because of the low thermal conductivity of SiC particles. The addition of Cu particles to Al-SiC MMCs could further slightly improve the compressibility behavior of Al-SiC/Cu MMCs, while the thermal conductivity could be enhanced by about 100% when the Cu content was increased from 0 to 30%. To meet the need for low density and high thermal conductivity in applications, it is more desirable to enhance the specific thermal conductivity by enlarging the preparation pressure and/or sintering temperature. This work is expected to supply some information for preparing Al matrix composites with low density but high thermal conductivity and high compressibility.

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Guo, M. L. Ted, i C. Y. A. Tsao. "Aluminum/SiC/Nickel-Coated Graphite Hybrid Composites and their Wear Behavior". Advanced Materials Research 509 (kwiecień 2012): 10–11. http://dx.doi.org/10.4028/www.scientific.net/amr.509.10.

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New materials for high performance tribological applications have been one of the major incentives for the development of aluminum-based metal matrix composites (MMCs). MMCs have received attention because of their improved specific strength, good wear resistance, higher thermal conductivity than ceramics, lower coefficient of thermal expansion, etc. Traditionally, lubricant externally added plays an important role in reducing wear in the application of wear resistance materials. However, self-lubricating materials are more desired than materials to which lubricant needs to be applied periodically, especially for wear parts difficult to be accessed, since solid lubricant contained in the former can be released automatically during the wear process and reduces wear.

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Singh, Swarndeep, Rupinder Singh i Simranpreet Singh Gill. "Development of Aluminium MMC with Hybrid Reinforcement - A Review". Materials Science Forum 808 (grudzień 2014): 109–19. http://dx.doi.org/10.4028/www.scientific.net/msf.808.109.

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Aluminium metal matrix composite (Al-MMC) is the most promising area for the researcher to develop a material of high strength, elastic modulus and wear resistance and low co-efficient of thermal expansion and weight. Un-hybrid and hybrid Al-MMC can be developmed by physical combination of aluminium with single and multiple reinforcement material, respectively. The improvement in mechanical properties has been achived with the reinforcement of Al2O3, SiC and combination of Al2O3, SiC (hybrid). Hybrid Al-MMCs are found superior to un-hybrid Al-MMCs in terms of wear properties. The fabrication of hybrid Al-MMC can be done with vacuum assisted moulding process (V process) in which no binder is used, which possesses many benefits over other sand casting processes. This production route will revolutionize the automobile and other industries.

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Midling, Ole Terje, i Øystein Grong. "Processing and Properties of Particle Reinforced Al-SiC MMCs". Key Engineering Materials 104-107 (lipiec 1995): 329–54. http://dx.doi.org/10.4028/www.scientific.net/kem.104-107.329.

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Veeresh Kumar, G. B., Pinapathina Gowtham, P. N. V. N. S. Sai Ram, V. Sai Ganesh i P. Sai Praneeth. "Fabrication and Tribological Behavior of Al3003-SiC Reinforced MMCs". IOP Conference Series: Materials Science and Engineering 1185, nr 1 (1.09.2021): 012025. http://dx.doi.org/10.1088/1757-899x/1185/1/012025.

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L. Selmy, A., M. M. Ghanem i K. A. Abd El-Azem. "WELDING OF ALUMINUM METAL MATRIX COMPOSITES (AL/SiC-MMCS)". ERJ. Engineering Research Journal 32, nr 1 (1.01.2009): 61–66. http://dx.doi.org/10.21608/erjm.2009.69389.

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Dariavach, Nader G., i James A. Rice. "Electromigration and the electroplastic effect in aluminum SiC MMCs". JOM 52, nr 5 (maj 2000): 40–42. http://dx.doi.org/10.1007/s11837-000-0033-0.

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Thiagarajan, C., R. Sivaramakrishnan i S. Somasundaram3. "Cylindrical grinding of Al/SiC metal matrix composites". Material Science Research India 7, nr 2 (8.02.2010): 425–33. http://dx.doi.org/10.13005/msri/070212.

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This paper deals with an experimental study on the grindability of Al/SiC metal matrix composites in cylindrical grinding. Machining of metal matrix composites (MMCs) is an area to be focused and finishing processes such as grinding to obtain a good surface finish and damage-free surfaces are crucial for the application of these materials. Nevertheless, grinding of MMCs has received little attention so far, thereby a detailed study on that has been carried out. In the present work, experiments are carried out to study the effect of grinding parameters; wheel velocity, work piece velocity, feed and depth of cut and SiC volume fraction percentage on the responses; grinding force, surface roughness and grinding temperature. Surface integrity of the ground surfaces is assessed using a scanning electron microscope (SEM). There are no cracks and defects found on the cylindrical ground surfaces at high wheel and work piece velocities, low feed and depth of cut.

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Sun, Fang Hong, X. K. Li, Y. Wang i Ming Chen. "Studies on the Grinding Characteristics of SiC Particle Reinforced Aluminum-Based MMCs". Key Engineering Materials 304-305 (luty 2006): 261–65. http://dx.doi.org/10.4028/www.scientific.net/kem.304-305.261.

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SiC-particle-reinforced aluminum-based metal matrix composite is one of the important composites among the metal matrix composites, for their various advantages such as lightweight, high specific modulus, specific strength, wear resistance and high temperature resistance. The precision machining of these advanced materials will not be possible without the solution of the grindability problem, which resists wide spread engineering application of PRAlMMCs as precise parts. This paper investigates the grinding performance and burn mechanism of SiC-particle-reinforced aluminum-based MMCs through thesystematical grinding experiments. Grinding characteristics of these MMCs including grinding force, grinding temperature, morphology of ground surface, surface roughness, residual stress, and chemical composition of the surface layer are obtained and analyzed by the various advanced measuring method. Experiment results reveal the varieties of grinding force, grinding temperature and surface integrity with the onset of grinding burn. The grinding burn mechanism can be unveiled by the varieties of grinding properties. Grinding experiments are conducted under different grinding conditions so as to explore the appropriate grinding parameters to obtain good surface integrity. The research results are of great significance for high efficiency and precision grinding of MMCs, thus promote the wide application of these advanced materials on the precise and wearable components.

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Mohankumar, V., Mani Kanthababu i R. Raveendran. "Review on Machining Aspects in Metal Matrix and Ceramic Matrix Composites Using Abrasive Waterjet". Applied Mechanics and Materials 766-767 (czerwiec 2015): 643–48. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.643.

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Abrasive waterjet machining (AWJM) is one of the non-traditional machining processes used for machining hard and difficult materials including metal matrix composites (MMCs) and ceramic matrix composites (CMCs). MMCs and CMCs are widely used in the industries such as automobile, aerospace, defense, etc. In AWJM, the material is removed by a narrow stream of high pressure water along with abrasive particles. This work, reviews the research work carried out on the machining aspects of MMCs and CMCs using AJWM. Most of the research work in MMCs is carried out on aluminum based matrix reinforced with ceramics such as silicon carbide (SiC) and aluminum oxide (Al2O3) in various proportions. In the case of CMCs, the research work mostly are carried out on alumina (Al2O3) based work specimen. Generally, it is observed that the reinforcement particles in the MMCs and CMCs greatly influence the output process parameters like depth of the cut, material removal rate (MRR), surface roughness (Ra), kerf width, etc. From the literature review, it is observed that the increase in volume percentage of reinforced abrasive particles results in decreased MRR, decreased in the depth of cut and increase in the Ra. This work also covers the future research work in the machining aspects of MMCs and CMCs.

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Lai, Liyan, Bing Niu, Yuxiao Bi, Yigui Li i Zhuoqing Yang. "Advancements in SiC-Reinforced Metal Matrix Composites for High-Performance Electronic Packaging: A Review of Thermo-Mechanical Properties and Future Trends". Micromachines 14, nr 8 (25.07.2023): 1491. http://dx.doi.org/10.3390/mi14081491.

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With the advancement of semiconductor technology, chip cooling has become a major obstacle to enhancing the capabilities of power electronic systems. Traditional electronic packaging materials are no longer able to meet the heat dissipation requirements of high-performance chips. High thermal conductivity (TC), low coefficient of thermal expansion (CTE), good mechanical properties, and a rich foundation in microfabrication techniques are the fundamental requirements for the next generation of electronic packaging materials. Currently, metal matrix composites (MMCs) composed of high TC matrix metals and reinforcing phase materials have become the mainstream direction for the development and application of high-performance packaging materials. Silicon carbide (SiC) is the optimal choice for the reinforcing phase due to its high TC, low CTE, and high hardness. This paper reviews the research status of SiC-reinforced aluminum (Al) and copper (Cu) electronic packaging materials, along with the factors influencing their thermo-mechanical properties and improvement measures. Finally, the current research status and limitations of conventional manufacturing methods for SiC-reinforced MMCs are summarized, and an outlook on the future development trends of electronic packaging materials is provided.

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Qing, Hai, i Tianliang Liu. "Micromechanical Analysis of SiC/Al Metal Matrix Composites: Finite Element Modeling and Damage Simulation". International Journal of Applied Mechanics 07, nr 02 (kwiecień 2015): 1550023. http://dx.doi.org/10.1142/s1758825115500234.

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The influence of interface strengths and microstructures on the strength and damage of SiC particle reinforced aluminum Metal Matrix Composite (MMC) is investigated under uniaxial tensile, simple shear, biaxial tensile and combined tensile and shear loadings. An algorithm to generate automatically the microstructural models of MMCs with random distribution of particle shapes, dimensions, orientations and locations is proposed and implemented within Matlab. A damage model based on the stress triaxial indicator is developed to simulate the ductile failure of metal matrix, the other damage model based on the maximum principal stress criterion is developed to simulate the brittle failure of SiC particles, and 2D cohesive element is utilized to describe interface decohesion between matrix and particles. A series of numerical experiments are performed to study the macroscopic stress–strain relationships and microscale damage evolution in MMCs under different loading conditions.

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Laad, Meena, Vijaykumar S. Jatti i Satyendra Yadav. "Comparative Study between SiC Reinforced Al 64430 Metal Matrix Composites and RHA Reinforced Al 64430 Metal Matrix Composites". Advanced Materials Research 1119 (lipiec 2015): 234–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1119.234.

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The excellent mechanical properties of Aluminium Metal Matrix Composites find applications in a variety of engineering applications in the automotive, aerospace and heavy machinery industries. This study aims at synthesis and characterization of Al 64430 reinforced with SiC particles and Rice Husk Ash (RHA). Rice husk ash is an agricultural waste which is produced in millions of tons worldwide. Aluminium was used as the base metal. With liquid metallurgy technique the metal matrix composites were prepared. The MMCs were synthesized with 3 % weight percentage RHA in Al metal matrix and the mechanical properties such as hardness, tensile strength and structural properties of MMCs were studied. The microstructure of the synthesized composites was examined by optical emission microscope and XRD. The Vicker’s microhardness test was performed on the composite specimens from base of the cast. The synthesized MMCs were found to have increased tensile strength, hardness, increased ultimate strength. The density of MMCs was observed to be decreased. This study indicates that RHA can be used as reinforcement material to synthesize light weight composites with increased hardness, tensile strength, Young’s modulus for various industrial applications.

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Dhandapani, P., i K. R. Ravi. "Synthesis and Characterization of Particulate SiC_p Reinforced Al-Si-Mg Alloy Composite with Varying Si Content". Advanced Materials Research 585 (listopad 2012): 301–5. http://dx.doi.org/10.4028/www.scientific.net/amr.585.301.

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Amongst the Metal Matrix Composites (MMCs), Al-Si-Mg alloy/ SiCp MMCs are very attractive for their properties. But, the formation of brittle interfacial reaction product, Aluminium carbide has been one of the major concerns when these materials are processed by liquid phase methods. The extent of Aluminium carbide formation depends on various processing parameters such as temperature, wt% of SiCp, particle size of SiCp and chemical composition of the matrix alloy especially Silicon (Si) content. According to recent studies, various difficulties in finding the process parameters to get desirable properties of Al alloy/ SiCp MMCs as desired by the industries. Thus, in the present study thermodynamic & structural estimates in Al alloy/ SiCp MMCs under various process conditions, composition, microstructures were performed. The relatively low cost liquid stir casting technique is used in the production of Al alloy/ SiCp MMCs with varying Silicon content (0–7%) in the alloy matrix using process temperature 710°C. Aluminium carbide layer formation on SiCp surface, Critical Si content for Aluminium carbide separation from SiCp surface, eutectic Si formation, existence of near-dislocation segregation regions after formation of Aluminium carbide on SiCp surface and the equilibrium amount of Si to suppress Aluminium carbide formation were investigated using Transmission electron microscopy (TEM). The separation of Aluminium carbide from SiCp surface was observed after 3% Si. The equilibrium Si content of 7% was found to suppress the formation of Aluminium carbide with thermodynamic model and its significance has been assessed.

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M, Ramakrishnaiah, Dr H. N. Vidyasagar i Dr H. K. Shivanand. "Effect of Reinforcements on Al8011 Metal Matrix Hybrid Composites with respect Compressive strength and Hardness". International Journal for Research in Applied Science and Engineering Technology 10, nr 12 (31.12.2022): 1857–69. http://dx.doi.org/10.22214/ijraset.2022.47991.

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Abstract: The metal matrix composites are the wide family of materials aimed to enhancing of combined properties of reinforcements. The matrix utilized in the development of MMCs would be of any material, but preferably aiming for lighter structural materials and main objective is in the improvement of mechanical properties. Majority of the progress in the field of MMCs is closely connected to development in reinforcement for incorporation in MMCs. But the orientation of this research is towards the fabrication and testing of Al8011, Silicon Carbide and S-glass fibre are the combination to cast the hybrid MMCs. The metallic matrix used in the present investigation is Aluminium alloy. Metal matrix composites (MMCs) possess significantly improved properties including high specific strength; specific modulus, damping capacity and good wear resistance compared to unreinforced alloys. There has been an increasing interest in composites containing low density and low-cost reinforcements. The present investigation has been focused on the using of silicon carbide and S-glass fibre as a reinforcement material in useful manner by dispersing in variable quantity into Aluminium-8011 to produce Hybrid MMCs by stir casting method and there by investigating its mechanical properties such as compressive strength and hardness of Al8011 metal matrix hybrid composites. Hence, it is proposed to form a new class of composite. Al8011 alloy reinforced with Silicon Carbide and S-glass to form MMCs using graphite crucible for casting. The MMC is obtained for different composition of SiC and S-glass fibre

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Unterweger, Klaus, i Otmar Kolednik. "The local deformation behaviour of MMCs – an experimental study". International Journal of Materials Research 96, nr 9 (1.01.2005): 1063–68. http://dx.doi.org/10.1515/ijmr-2005-0183.

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Abstract The local deformation behaviour of powder metallurgy metal matrix composites (MMCs) with two different SiC particle sizes and aging conditions are investigated and compared to the behaviour of the un-reinforced matrix. In situ tensile loading experiments are carried out in a scanning electron microscope. Images taken at different deformation stages are analysed by a system for local deformation measurement. It is found that even the pure matrix material deforms inhomogeneously, showing a shear-band pattern which is independent of the loading stage. The MMCs with coarse reinforcements deform mainly due to shear bands which are induced by fractured particles. The MMCs with small particles exhibit a shear-band pattern which is controlled by the particle arrangement. The fracture of small particles does not induce far-reaching shear bands and, therefore, these materials have a higher strength and ductility.

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Alipour Sougavabar, Mahmoud, Seyed Ali Niknam, Behnam Davoodi i Victor Songmene. "Milling Al520-MMC Reinforced with SiC Particles and Additive Elements Bi and Sn". Materials 15, nr 4 (18.02.2022): 1533. http://dx.doi.org/10.3390/ma15041533.

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In recent years and due to advanced fabrication techniques of composites, many of these functional materials have been brought to the forefront with more benefits. Amongst composites, special attention has been paid to metal matrix composites (MMCs). Reinforced aluminum MMCs with nanoparticles are among the new MMCs with a wide range of industry applications. The combination of aluminum as a soft, lightweight, and low-strength material with silicon carbide (SiC), bismuth (Bi), and tin (Sn) particles, which are hard and high-strength materials, may lead to the generation of high-strength and lightweight material, which can be classified as difficult to cut material. According to literature, limited studies have been reported on the effects of various reinforcing elements on the machinability of Al-MMC, in principle tool wear morphology and size and surface quality. According to statistical analysis, the effect of cutting parameters and reinforcing particles on the surface quality attributes is not statistically significant. In contrast, the effect of cutting parameters and reinforcing particles on the tool flank wear is significant and reliable. In addition, it is observed that the reinforcing particles and cutting speed have the most significant effects, and the lubrication mode has a minor impact on the tool flank wear.

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