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Artículos de revistas sobre el tema "Aluminium alloys"

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Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 7 de julio de 2024

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1

Huynh, Khanh Cong y Luc Hoai Vo. "Modification of aluminium and aluminium alloys by AL-B master alloy". Science and Technology Development Journal 17, n.º 2 (30 de junio de 2014): 56–66. http://dx.doi.org/10.32508/stdj.v17i2.1315.

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Chemical compositions and microstructures affect on mechanical – physical and working properties of aluminium and aluminum alloys. Transition elements, such as Ti, V, Cr, Zr in solid solution greatly reduce the electrical conductivity of aluminium and its alloys. For reduction of detrimental effects of transition elements, Al-B master alloys are added into molten aluminium to occur reactions of boron and transition elements to form diborides of titanium, vanadium, chromium and zirconium, which are markedly insoluble in molten aluminium, then these transition elements have an insignificant effects on conductivity. In addition, Al-B master alloys is also used as a grain refiner of aluminium and aluminium alloys. Aluminium borides particles in Al-B master alloys act as substrates for heterogeneous nucleation of aluminium and its alloys. Al-B master alloys are prepared from low cost materials, such as boric acid H3BO3 and cryolite Na3AlF6, by simple melting method, easily realize in electrical wire and cable factories.
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2

Fan, Yang Yang y Makhlouf M. Makhlouf. "Castable Aluminium Alloys for High Temperature Applications". Materials Science Forum 765 (julio de 2013): 8–12. http://dx.doi.org/10.4028/www.scientific.net/msf.765.8.

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Most traditional aluminium casting alloys are based on the aluminium-silicon eutectic system because of its excellent casting characteristics. However, the solidus in this system does not exceed 577 °C and the major alloying elements used with silicon in these alloys have high diffusivity in aluminium. Therefore, while these elements enhance the room temperature strength of the alloy, they are not useful at elevated temperatures. Considering nickel-base superalloys, whose mechanical properties are retained up to temperatures that approach 75% of their melting point, it is conceivable that castable aluminium alloys can be developed on the same basis so that they are useful at temperatures approaching 300 °C. In this publication, we present the thought process behind developing a new castable aluminum alloy that is designed specifically for such high temperature applications and we present the alloy’s measured castability characteristics and its elevated temperature tensile properties.
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3

Zou, Cheng Lu, Gui Hong Geng y Wei Ye Chen. "Development and Application of Aluminium-Lithium Alloy". Applied Mechanics and Materials 599-601 (agosto de 2014): 12–17. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.12.

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The history of aluminium-lithium alloys development has been reviewed in this paper. According to the strength, weld ability and corrosion resistance, thermal stability and plasticity, aluminium-lithium alloy has been categorized and the defects of aluminium-lithium alloys in early stage have been analyzed. As compared the third generation of aluminium-lithium alloy with normal aluminum alloy and composite materials, it indicates aluminium-lithium alloy has better performance, lower cost and reduced weight. After analyzing the advantages and disadvantages of the rapid solidification, ingot casting metallurgy and electromagnetic simulated microgravity methods in synthesis of aluminium-lithium alloy, it has been found microgravity method has prominent effect on reducing the alloy segregation and lithium losses. Finally, the future development of aluminium-lithium alloys has been discussed.
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4

Kucharčík, L., M. Brůna y A. Sládek. "Influence of Chemical Composition on Porosity in Aluminium Alloys". Archives of Foundry Engineering 14, n.º 2 (1 de junio de 2014): 5–8. http://dx.doi.org/10.2478/afe-2014-0026.

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Abstract Porosity is one of the major defects in aluminum castings, which results is a decrease of a mechanical properties. Porosity in aluminum alloys is caused by solidification shrinkage and gas segregation. The final amount of porosity in aluminium castings is mostly influenced by several factors, as amount of hydrogen in molten aluminium alloy, cooling rate, melt temperature, mold material, or solidification interval. This article deals with effect of chemical composition on porosity in Al-Si aluminum alloys. For experiment was used Pure aluminum and four alloys: AlSi6Cu4, AlSi7Mg0, 3, AlSi9Cu1, AlSi10MgCu1.
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5

Zhou, Jia, Jun Ping Zhang y Ming Tu Ma. "Study on the Formability of Aluminium Alloy Sheets at Room and Elevated Temperatures". Materials Science Forum 877 (noviembre de 2016): 393–99. http://dx.doi.org/10.4028/www.scientific.net/msf.877.393.

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This paper presents the main achievements of a research project aimed at investigating the applicability of the hot stamping technology to non heat treatable aluminium alloys of the 5052 H32 and heat treatable aluminium alloys of the 6016 T4P after six months natural aging. The formability and mechanical properties of 5052 H32 and 6016 T4P aluminum alloy sheets after six months natural aging under different temperature conditions were studied, the processing characteristics and potential of the two aluminium alloy at room and elevated temperature were investigated. The results indicated that the 6016 aluminum alloy sheet exhibit better mechanical properties at room temperature. 5052 H32 aluminum alloy sheet shows better formability at elevated temperature, and it has higher potential to increase formability by raising the temperature.
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6

Han, Yu, Bao An Chen, Zhi Xiang Zhu, Dong Yu Liu y Yan Qiu Xia. "Effects of Zr on Microstructure and Conductivity of Er Containing Heat-Resistant Aluminum Alloy Used for Wires". Materials Science Forum 852 (abril de 2016): 205–10. http://dx.doi.org/10.4028/www.scientific.net/msf.852.205.

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It has particular heat-resistant property and conductivity of high-conductivity heat-resistant Aluminium alloys, which would be wildly applied in transmission and transformation flied. Al-Er-Zr alloys containing different content of Zr were prepared. The effect of Zr on microstructure of heat-resistance Aluminum alloy were studied by using of STEM, and thermodynamic behavior of Zr in Aluminium alloy was analyzed based on the theory of alloy phase formation. The results showed that the effect of Zr content on the grain size of heat-resistant aluminum alloy was remarkable, and the conductivity of heat-resistance Aluminum alloy was influenced.
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7

Mounika, G. "Closed Loop Reactive Power Compensation on a Single-Phase Transmission Line". International Journal for Research in Applied Science and Engineering Technology 9, n.º VI (20 de junio de 2021): 2156–59. http://dx.doi.org/10.22214/ijraset.2021.35489.

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Zinc-aluminium alloys are alloys whose main ingredients stay zinc and aluminium. Other alloying elements clasp magnesium and copper .Zinc Aluminum Alloys over the past decayed are occupying attention of both researches and industries as a promising material for tribological applications. At this moment commercially available Zinc-Aluminium alloys and bearing bronzes due to good cost ability and unique combination of properties. They can also be deliberated as competing material for cast iron, plastics and even for steels. It has been shown that the addition of alloying elements including copper, silicon, magnesium, manganese and nickel can improve the mechanical and tribological properties of zinc aluminum alloys. This alloy has still found limited applications encompassing high stress conditions due to its lower creep resistance, compared to traditional aluminum alloys and other structural materials. This has resulted in major loss of market potential for those alloy otherwise it is excellent material. The aim of this paper is to measure the coefficient of friction and wear under different operating conditions for material with silicon content. Then wear equation will be found out for all the materials experimented under various conditions. In this paper there is discussion of the effect of Silicon on tribological properties of aluminium based Zinc alloy by experiment as well as Ansys software based and compares the same.
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8

Labur, T. M. "Welded structures from aluminium alloys". Paton Welding Journal 2020, n.º 3 (28 de marzo de 2020): 25–33. http://dx.doi.org/10.37434/tpwj2020.03.04.

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9

Mamala, A. y W. Sciężor. "Evaluation of the Effect of Selected Alloying Elements on the Mechanical and Electrical Aluminium Properties". Archives of Metallurgy and Materials 59, n.º 1 (1 de marzo de 2014): 413–17. http://dx.doi.org/10.2478/amm-2014-0069.

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Abstract Modern industry expects aluminum products with new, unusual, and well-defined functional properties. Last years we are able to notice constant development of aluminium alloys. In food industry, power engineering, electrical engineering and building engineering, flat rolled products of 1XXX series aluminium alloys are used.8XXX series alloys registered in Aluminium Association during last 20 years may be used as an alternative. These alloys have very good thermal and electrical conductivity and perfect technological formability. Moreover, these materials are able to obtain by aluminium scrap recycling. Fundamental alloy additives of 8XXX series are Fe, Si, Mn, Mg, Cu and Zn. Aluminium alloying with these additives makes it possible to obtain materials with different mechanical ale electrical properties. In this paper, the analysis of alloy elements content (in 8XXX series) effect on chosen properties of material in as cast and after thermal treatment tempers has been presented.
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10

Bouzekova-Penkova, Anna y Adelina Miteva. "Some Aerospace Applications of 7075 (B95) Aluminium Alloy". Aerospace Research in Bulgaria 34 (2022): 165–79. http://dx.doi.org/10.3897/arb.v34.e15.

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Nowadays, aluminium alloys are of growing interest to scientists and are widely used in aerospace and allied industries due to their inherent lightness, high strength to weight ratio, excellent thermal and electrical conductance, good reflectivity and low working cost. Among the conventional structural materials used in aerospace applications aluminium alloys are frontrunners. This is due to the ability of modern aluminium alloys to achieve unique combination of properties, through alloying and heat treatment, tailored to particular applications. Aluminum alloy 7075 (B95) is a high-strength alloy that works in extreme conditions and is used in modern construction of aircraft, spacecraft and satellites. In this mini-review, we will briefly focus on some of the existing and growing applications of some 7xxx aluminum alloys, in particular 7075 (B95), in the aerospace industry. Possible options for continuing work in this area are considered, and some Bulgarian developments are presented.
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11

Zhu, Sheng, Guo Feng Han, Xiao Ming Wang, Yu Xiang Liu y Zhi Qian Wang. "Electrochemical Characteristics of TiAl Coating on Aluminum Alloy Surface by Supersonic Particles Deposition". Advanced Materials Research 1051 (octubre de 2014): 199–203. http://dx.doi.org/10.4028/www.scientific.net/amr.1051.199.

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In this study, Ti-45Al-7Nb-4V alloy protective coating which base on γ-TiAl phase was deposited on the surface of 5803 aluminum alloy by supersonic particles deposition technology. Researchers observed the micro-structure of the TiAl alloy casting and coating by SEM, and researched the electrochemical characteristics and the galvanic corrosion between TA2 titanium alloy and 5083 aluminum alloy or TiAl alloy casting and coating by electrochemical work station. The results show that,the galvanic corrosion current between 5083 aluminium alloy and TA2 titanium alloy declines from 16.2μA to 0.27μA after TiAl protecting coatings are prepared on the substrates, besides, the corrosion susceptibility drops from E degree to A degree. It also manifests that the 5083 aluminium alloy with Ti-45Al-7Nb-4V coatings can be contacted and utilized with TA2 titanium alloy directly, which tackles the issues of gavanic corrosion prevention between aluminium alloys and titanium alloys.
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12

Wongpreedee, Kageeporn, Panphot Ruethaitananon y Tawinun Isariyamateekun. "Interface Layers of Ag-Al Fusing Metals by Casting Processes". Advanced Materials Research 787 (septiembre de 2013): 341–45. http://dx.doi.org/10.4028/www.scientific.net/amr.787.341.

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The materials of fusing metals commercially used in the jewelry niche marketing is seen as precious metals. An innovation of fusing metals searched for new materials to differentiate from the markets for mass production. In this research, it studied the bonding processes of silver and aluminium metals by casting processes for mass productions. The studies had been varied parameters on the types of aluminium and process temperature controls. This research had used two types of aluminium which were pure aluminium 99.99% and aluminum 5083 alloys bonding with pure silver 99.99%. The temperatures had been specified for two factors including casting temperature at X1, X2 and flasking temperature at Y1, Y2. From the results, it was found that the casting temperature at 730°C and the flasking temperature at 230 °C of pure silver-aluminum 5083 alloys bonding had the thinnest average thickness of interface at 427.29 μm. The microstructure of pure silver-aluminum 5083 alloy bonding was revealed eutectic-like structures at the interfaces. The EDS analysis showed the results of compounds at interface layers of Ag sides giving Ag2Al intermetallics on pure silver-aluminum 5083 alloy bonding unlike pure silver-pure aluminium bonding giving Ag3Al intermetallics.
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13

Hung, Dao Quoc, Dũng Trần Thanh, Thắng Đinh Văn, Duy Huỳnh Nhật y Lập Thượng Công. "Fabrication technology for aluminium-alloy tanks carrying petroleum and chemical substances in Viet Nam". Science & Technology Development Journal - Engineering and Technology 3, SI2 (15 de abril de 2021): first. http://dx.doi.org/10.32508/stdjet.v3isi2.568.

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Compared to steels, aluminium-alloys are comparably strong but 3 times lighter, inoxidable and unfavorable to producing mechanical sparks. Aluminium alloys are therefore attractive materials and have been widely applied to transportation industry in developed countries since 1950s. An alunimium-alloy tank has upto 20% more useful volume than a steel tank for the same total weight. Interior and exterior protective coatings are unnecessary, significantly saving annual maintenance costs and preventing any contamination from abrasion of interior protective coatings. In additional, an aluminim-alloy tank does not ignite a fire in traffic accident. In G7 regions as well as many developed countries in Europe and Asia, only tanks made from aluminim alloys are approved for carrying danger liquids such as petroleum and chemical substances. In Vietnam, International Machine And Equipment (IMAE) Company is considered as a pioneer in designing and manufacturing aluminium alloy-tanks satisfying American DOT 406 Standard for tank trucks and semi-trailers. With optimized designing and manufacturing processes in conjunction with quality control system and continuous improvement, product quality is strictly maintained, quickly providing benefits to customers. Using an aluminium-alloy tank for carrying petroleum for 25 years, a complete payback can be achieved after only 7 months although initial investment is considerablely high.
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14

Edigarov, V. R. "Surface Friction-Electric Treatment of Aluminum Alloys". Proceedings of Higher Educational Institutions. Маchine Building, n.º 10 (727) (noviembre de 2020): 47–53. http://dx.doi.org/10.18698/0536-1044-2020-10-47-53.

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This paper examines a combined friction-electric treatment of surface layers of machine parts made of aluminums alloys. The temperature released during the friction process is the main technological factor of the treatment, and the heat released during the passage of electric current through the local volume of friction-thermal action is an additional heat source. The paper presents the results of studying a surface modification method involving friction-electric treatment of aluminium alloys with reinforcement by aluminium oxide particles under varied technological conditions: density of electric current, pressing force of the tool, shape of the tool working zone and speed of treatment. A hard alloy tool with high temperature resistance was used as a tool for friction-electric treatment. The tool was installed in a mandrel of a special design allowing supply of a modifier representing a mixture of aluminum oxide particles with a surfactant to the treatment zone. Using the friction-electric treatment of the surface layer of samples with reinforcement by aluminum oxide particles it was possible to increase the surface hardness by about 30–40 % and thickness of the hardened layer by 3–5 times due to the local deformation and passage of electric current through the treatment zone, and to improve wear resistance of the surface layer.
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15

Yadwinder Pal Sharma y Pardeep Kumar. "Effect of Welding Parameters on The Properties of Aluminium Alloys 6063 and 6101 Welded with Friction Stir Welding". Asian Review of Mechanical Engineering 3, n.º 2 (5 de noviembre de 2014): 43–47. http://dx.doi.org/10.51983/arme-2014.3.2.2379.

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Friction stir welding (FSW) has got wide attraction in aerospace and automobile industries, as conventional fusion welding techniques are susceptible to various welding defects like cracks and porosity, Welding of aluminum alloys were also a matter of concern because of the thin oxide layer formation on the surface of alloys as this oxide layer tends to thicken at higher temperatures. Friction stir welding process shows several advantages to weld aluminum alloys. In the present research the optimization of the mechanical properties of welded joint of aluminum alloy of 6000 series are considered. This aluminium alloy series is used for architectural fabrication due to good surface finish, high corrosion resistance and good mechanical properties. The aluminium alloys 6063 and 6101 are successfully welded with friction stir welding technique. Two different rotation speeds of tool 1600 rpm and 1200 rpm and two different pin profiles tools square & hexagonal are selected for this work. From the results it is observed that the joint welded with hexagonal pin profile at 1200 rpm tool rotation speed gives superior mechanical properties.
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16

Joseph, Olufunmilayo Oluwabukola y Micheal Olalekan Aluko. "Effect of Synthetic Materials in Reinforcement of Aluminium Matrix Composites". Materials Science Forum 1076 (8 de diciembre de 2022): 3–11. http://dx.doi.org/10.4028/p-o2816k.

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Aluminium matrix composite is a type of innovative technical material that have applications in aerospace, automotive, biotechnology, electronics, and a lot more. Non-metallic reinforcements can be injected into an aluminium alloy to provide advantages over base metal (Al) alloys. Better mechanical properties, improved microstructure, and corrosion resistance are the benefits that have been noticed upon reinforcements. The proportion of reinforcement, kind, size, and forms of aluminium matrix are all important factors in improving mechanical and tribological properties. Investigation in the creation of highly advanced tailored materials using liquid and solid-state processes and the impact it has on the properties and application are the subject of this work. The current research summarizes recent breakthroughs in aluminium-based composites and other particle reinforcement effects. The experiment findings revealed that strengthening the aluminum matrix with reinforcements increased mechanical properties and improves the microstructure. Also, stir casting was seen to be the most popular liquid metal approach because of its cost effectiveness and processing parameters which could easily be adjusted and monitored. It is concluded that aluminum matrix composites have greater mechanical characteristics, microstructure, and corrosion resistance than unreinforced aluminum alloys.
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17

Student, Mykhajlo, Sergiy Markovych, Volodymyr Hvozdetskii, Khrystyna Zadorozhna, Igor Kovalchuk y Yurii Dzjoba. "Wearproofness of Layers of Oxide of Formed by Method of Hard Anodization (Hard Anodic Coatings) at Strengthening of Details of Agroindustrial Technique". National Interagency Scientific and Technical Collection of Works. Design, Production and Exploitation of Agricultural Machines, n.º 51 (2021): 182–87. http://dx.doi.org/10.32515/2414-3820.2021.51.182-187.

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In the last years in an agroindustrial production there is a tendency on replacement of cast-iron details on a detail from aluminium alloys at execution on поверхю of strengthening layer. An ironmaking is accompanied the extrass of plenty of carbon dioxide in an atmosphere. Substituting of cast-iron details by aluminium will decrease the amount of extrass of carbon dioxide in an atmosphere, and substantially will decrease weight of constructions. Hard anodization is used practically in all of industries of industry: avsup and motor-car industry; hydraulics; electronics; heater platforms and tiles; medical devices. This method will allow to promote mechanical descriptions of aluminium alloys the method of forming of the anodized layers on their surface. The synthesis of the anodized layer on an aluminum alloy was performed in a 20% solution of sulfuric acid at a temperature of (-8…-2 ˚C). During anodizing, the current density was 5 A / dm2. The anodizing times were 60, 120 and 180 minutes. Conducted metallographic studies and phase analysis of the layers. Reduction of moisture content was performed at a temperature of 400˚C for 60 minutes. It was found that the oxide layer (Al2O3 • H2O) during hard anodizing on aluminum alloys forms not only oxygen ions, which are formed due to the decomposition of water, but also its neutral atoms, which are formed from the solution. It was found that the microhardness and layer thickness increase with increasing anodizing time. After heat treatment, the number of water molecules decreases and the microhardness increases. Increasing the microhardness increases the resistance to abrasive wear. Conclusions: The layer of oxide in the composition contains to three molecules of water, which reduce a microhardness, and and wearproofness of the anodized layer substantially. The layers of oxide on aluminium alloys are formed the method of cold anodization at low temperatures -8…-4 ˚C to 6 time promote abrasive wearproofness of aluminium alloy of D16. Heat treatment for the temperatures of 400˚C during 2 hours promotes abrasive wearproofness of aluminium alloy on an order.
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18

Huang, Chuan Yong. "Electroless Ni-La-P Coatings on 2024 Aluminum Alloys for Aircraft Structure". Applied Mechanics and Materials 224 (noviembre de 2012): 348–51. http://dx.doi.org/10.4028/www.scientific.net/amm.224.348.

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2024 aluminium alloys are widely used in airframe construction.However,this series of alloys are susceptible to corrosion to limit their usefulness,In this study,electroless Ni-La-P alloy plating on aluminum alloy and the effects of pH value,temperature and concentration of LaNiO3 on deposition rate were investigated.Surface morphology and corosion-resistant of the electroless Ni-La-P deposits were evaluated.The results showed the corrosion-resistant in 5％ NaC1 solutions obviously enhance compared with original aluminum alloy using electroless Ni-La-P deposition method．
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19

Hori, Y., J. Takao y H. Shomon. "Aluminium alloys for aluminium primary cell". Electrochimica Acta 30, n.º 9 (septiembre de 1985): 1121–24. http://dx.doi.org/10.1016/0013-4686(95)80002-6.

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20

Sun, Gang, Xiao-Yong Sun y Jian-Hang Fu. "Web Crippling Behaviour of High-Strength Aluminium Alloy Channel Sections under Concentrated Loading: Numerical Modelling and Proposed Design Rules". Buildings 13, n.º 7 (19 de julio de 2023): 1823. http://dx.doi.org/10.3390/buildings13071823.

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Two types of high-strength aluminium alloy (HA)—namely, AA-6086 and 7075-T6—have been developed and extensively used in recent years. These high-strength aluminium alloys offer advantages such as lower prices and higher yield strength than traditional alloys. The webs of aluminium channel members under concentrated loads are susceptible to web buckling failure, which restricts their applications. However, no research work has been reported that has evaluated the web buckling performance of high-strength aluminium alloy channel sections subjected to end-two-flange (ETF) loading, and the material characteristics of these high-strength aluminium alloys differ significantly from those of conventional aluminium alloys. This work addresses this gap by conducting a detailed numerical investigation. A parametric investigation consisting of 1024 models was performed using the finite element (FE) models previously developed for traditional aluminium alloys. A wide range of high-strength aluminium alloy sections covering varying web slenderness ratios, internal corner radii, bearing lengths, and aluminium alloy grades were considered in this investigation. It was shown that the latest design recommendations in the Australian and New Zealand Standards (AS/NZ S4600) and (AS/NZS 1664.1) were over-conservative when estimating the web buckling strength of such channel sections. Finally, new web buckling design equations for high-strength aluminium alloy channel sections were proposed through reliability analysis in this investigation.
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21

Lavernia, Enrique J. y Nicholas J. Grant. "Aluminium-lithium alloys". Journal of Materials Science 22, n.º 5 (mayo de 1987): 1521–29. http://dx.doi.org/10.1007/bf01132370.

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22

Michalik, Rafał y Tomasz Mikuszewski. "The Influence of Addition of the Rare Earth Elements on the Structure and Hardness of AlZn12Mg3.5Cu2.5 Alloy". Solid State Phenomena 226 (enero de 2015): 39–42. http://dx.doi.org/10.4028/www.scientific.net/ssp.226.39.

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Aluminium alloys are characterized by a number of advantageous properties , which include: low density ,high relative strength , high electrical and thermal conductivity , ease of machining and good dumping features. Particular interesting are high-strength aluminum alloys of zinc, magnesium and copper. These alloys are used mainly in aircraft, building &structure, electrical, electrical power and automotive industry. A significant problem associated with the use of high-strength aluminium-zinc alloys is their insufficient resistance to corrosion. Improvement of corrosion resistance can be obtained by application of alloy micro-additives. The article shows results of examinations related to influence of rare earth additive on the structure and hardness of AlZn12Mg3.5Cu2.5 alloy. The scope of examination included: structure testing using scanning microscope, X – ray microanalysis, hardness test. Examinations have shown higher hardness of samples with rare earth additives. Was found , that rare earth addition influences on more fine –grained structure of the AlZn12Mg3.5Cu2.5 alloy.
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23

Firdaus, Kholid, Kadek Rihendra Dantes y I. Nyoman Pasek Nugraha. "Analisis Perbandingan Tegangan Statik Material Galvanized Steel Dengan Material Aluminium Alloys 7076-T6 (Sn) Pada Frame Ganesha Scooter Underwater (GSU) Menggunakan Software Solidworks". Jurnal Pendidikan Teknik Mesin Undiksha 8, n.º 1 (23 de marzo de 2020): 20. http://dx.doi.org/10.23887/jptm.v8i1.27302.

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Dalam penenlitian ini dilakukan analisis tegangan statik pada rancangan Frame Ganesha Scooter Underwater dengan perbandingan material galvanized steel dan aluminuium alloys 7076-T6 menggunakan software Solidworks dengan tanpa beban pengendara dan pembebanan dari pengendara. Tujuan dari penelitian ini adalah untuk mengetahui tegangan statik terbesar pada Frame Ganesha Scooter Underwater menggunakan material galvanized steel dan aluminium alloys 7076-T6 dengan beban 80 Kg dan tanpa beban.Dari hasil analisis yang telah dilakukan pada frame dengan material galvanized steel dan aluminium alloys 7076-T6 (SN) tanpa beban pengendara maupun dengan beban pengendara mengalami penurunan setelah dilakukan penggantian material aluminium alloys 7076-T6 (SN) yaitu sebesar 8,4% dan juga tegangan maksimum pada frame dengan material galvanized steel dengan beban pengendara mengalami penurunan setelah dilakukan penggantian material aluminium alloys 7076-T6 (SN) yaitu sebesar 8,4%. Kemudian hasil faktor keamanan (factor of safety) pada frame material galvanized steel tanpa beban pengendara mengalami peningkatan setelah dilakukan penggantian material aluminium alloys 7076-T6 (SN) yaitu sebesar 63%. Dan juga faktor keamanan (factor of safety) pada frame standar material galvanized steel dengan beban pengendara mengalami peningkatan setelah dilakukan penggantian material aluminium alloys 7076-T6 (SN) yaitu sebesar 63,02%, sehingga dapat dikatakan bahwa pergantian material galvenized steel dengan aluminium alloys 7076-T6 lebih baik dan lebih kuat untuk digunakan.Kata Kunci:Aluminium Alloys, Frame, Galvanized Steel,Tegangan Von Mises
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24

Aishwarya, Patlolla, G. P. Vaisshnavi, Alluri Namitha reddy y N. Sateesh. "Optimization Process Parameters in Testing of Wear properties of Aluminium Alloy 6082". E3S Web of Conferences 391 (2023): 01054. http://dx.doi.org/10.1051/e3sconf/202339101054.

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When the two materials are in contact in motion, wear rate of the materials taken an important role. Aluminium alloys used in many applications like automobile components, aerospace components, home appliances, machine tool components. Advanced aluminium alloys are used in aerospace components. In this project wear studies of advanced aluminium alloys are carried using pin-on-disc machine three processing parameters considered are Load, Time and Speed. Twenty seven samples ae been tested to find wear rate of aluminium alloys. A Taguchi method is applied to find optimization process parameters which are having minimum wear rate. Aluminium alloy 6082 has a medium strength and good corrosion resistance. It is the strongest alloy
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25

Hou, Qinghua, Raj Mutharasan y Michael Koczak. "Feasibility of aluminium nitride formation in aluminum alloys". Materials Science and Engineering: A 195 (junio de 1995): 121–29. http://dx.doi.org/10.1016/0921-5093(94)06511-x.

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26

Astarita, Antonello, Silvio Genna, Claudio Leone, Fabrizio Memola Capece Minutolo, Valentino Paradiso y Antonino Squillace. "Laser Cutting of Aluminium Sheets with a Superficial Cold Spray Titanium Coating". Key Engineering Materials 611-612 (mayo de 2014): 794–803. http://dx.doi.org/10.4028/www.scientific.net/kem.611-612.794.

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In the manufacturing of metal components both wear and corrosion have to be considered. In particular, corrosion is a primary problem in the aeronautic field, where the aluminium alloys are affected by several corrosion typologies. Furthermore, nowadays carbon fibre reinforced plastics (CFRP) are finding an increasing use, but they can induce galvanic corrosion phenomena when coupled with aluminium alloys. To overcome this problem, corrosion resistant coatings are used on aluminium components. On these premises, the realization of a titanium coating on aluminium components could allow the coupling of CFRP and aluminium alloys, improving the corrosion resistance. Cold Spray Deposition is a recent technology to realize these coatings. This technology allows the production of near fully dense coatings on metallic surfaces. In many applications the coated aluminium sheets have to be machined (cut or drilled). Machining with conventional cutting methods leads to both tool wear and damages in the coating. Laser cutting represents a promising alternative: it does not involve any mechanical cutting force or tool wear and, thanks to the small laser beam spot, it allows to realize complex shapes. In this paper, laser cutting of an Al alloy sheet (0.6 mm thick) coated with Ti Alloy, was studied. The adopted laser source was a 150 W, lamp pumped Nd:YAG, specifically developed for micro-machining operations on metals. During the tests, the process parameters (cutting speed, pulse duration and entrance side) were changed and the kerf geometry was analysed as a function of the process parameters.
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27

Almeida, A. y R. Vilar. "Laser surface alloying of aluminium-transition metal alloys". Revista de Metalurgia 34, n.º 2 (30 de abril de 1998): 114–19. http://dx.doi.org/10.3989/revmetalm.1998.v34.i2.672.

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28

Mrówka-Nowotnik, G., J. Sieniawski, S. Kotowski, A. Nowotnik y M. Motyka. "Hot Deformation Of 6xxx Series Aluminium Alloys". Archives of Metallurgy and Materials 60, n.º 2 (1 de junio de 2015): 1079–84. http://dx.doi.org/10.1515/amm-2015-0263.

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Abstract The hot deformation behavior of the 6xxx aluminum alloys was investigated by compression tests in the temperature range 100°C-375°C and strain rate range 10−4s−1 and 4×10−4s−1 using dilatometer DIL 805 BÄHR Thermoanalyse equipped with accessory attachment deformation allows the process to execute thermoplastic in vacuum and inert gas atmosphere. Associated microstructural changes of characteristic states of examined alloys were studied by using the transmission electron microscope (TEM). The results show that the stress level decreases with increasing deformation temperature and deformation rate. And was also found that the activation energy Q strongly depends on both, the temperature and rate of deformation. The results of TEM observation showing that the dynamic flow softening is mainly as the result of dynamic recovery and recrystallization of 6xxx aluminium alloys.
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29

Dawood, Nawal Mohammed. "Erosion-Corrosion Behavior of Al-20%Ni-Al2O3 Metal Matrix Composites by Stir Casting". Materials Science Forum 1002 (julio de 2020): 161–74. http://dx.doi.org/10.4028/www.scientific.net/msf.1002.161.

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Aluminium as matrix in particulars have been vastlys investigateds, this is becauses of the diverses applicationss of aluminium dues to its exceptional propertiess. Material scientistss alwayss face a challenges when it comess to the tribologicals and mechanicals propertiess of aluminium, as it exudess rather poors behaviours in these aspectss. Hences this works aims to improves the mechanicals and corrosives resistances of Aluminiums by reinforcings with aluminum oxides and Nickel throughs stir casting usings vortex techniques. Al-Ni-Al2O3 composites with percentages of Ni fixed at 20 % and Al2O3 differed through 4-8% in incrementss of 2 wt. % . Composites material was prepareds by stir castings using vortex techniques. The hardness value of the aluminiums matrix composites improved with increaseds percentages of Al2O3, maximums increase was obtaineds for 8% Al2O3 composite, viewing an increases of about 55%. A generals corrosions and erosion-corrosions for the Al-20%Ni bases alloys and the prepareds composites were carrieds out in 3.5wt% NaCl solutions as corrosives mediums for general corrosions while in erosion-corrosions with impacts angles 90° in slurry solutions ( 1wt%SiO2 sand in 3.5wt% NaCl solution as the erodent). It was founds that the general corrosions rates for composite specimens is lower than thats of the bases alloy (Al-20%Ni). In case of erosion-corrosion resultss, it was founds that the erosion corrosions resistances property of the prepareds composites improveds significantlys with the increaseds percentages of Al2O3. There wass a noticeable improvements in the corrosion resistances of the aluminiums composites compareds to its purest forms, owing to the presences of nickel. Howevers, the increases in Al2O3 percentages decrease the corrosions rates. The extreme decreases was obtaineds for 8% Al2O3 composites, with a decreases of 26% corrosion rates in (mpy) unit for composites material is lowers than that of the bases alloys.
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30

Sonkusare, Pankaj, Dr Shri Krishna Dhakad, Dr Pankaj Agarwal y Dr Ravindra Singh Rana. "Advancing Corrosion Resistance and Micro-hardness in 6061 Aluminium Alloy through Friction Stir Surface Processing". International Journal of Innovative Technology and Exploring Engineering 13, n.º 6 (30 de mayo de 2024): 23–33. http://dx.doi.org/10.35940/ijitee.a8065.13060524.

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Friction stir surface processing (FSSP) is a promising technique for enhancing the properties of aluminium alloys. This abstract presents the findings of a study focused on the FSSP of 6061 aluminium alloy to improve its corrosion resistance and micro-hardness. The FSSP method involves the stirring of a rotating tool across the alloy's surface, inducing plastic deformation and refinement of the microstructure. The study investigates the impact of FSSP parameters such as rotational speed, traverse speed, and tool geometry on the corrosion resistance and micro-hardness of the alloy. Results show that FSSP significantly improves the corrosion resistance of the 6061 aluminium alloy, attributed to refined grain structure and reduced grain boundary corrosion susceptibility. Additionally, micro-hardness is enhanced due to the refined microstructure and dispersion strengthening effects. The findings demonstrate the potential of FSSP as a viable surface treatment technique for aluminium alloys, offering improved corrosion resistance and mechanical properties for various engineering applications.
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31

Kozana, Janusz, Marcin Piękoś, Aldona Garbacz-Klempka y Małgorzata Perek-Nowak. "The Effect of Tin on Microstructure and Properties of the Al-10 wt.% Si Alloy". Materials 15, n.º 18 (13 de septiembre de 2022): 6350. http://dx.doi.org/10.3390/ma15186350.

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In this paper, the results from studies regarding near-eutectic Al-Si alloys with Sn as an alloying addition are presented. In most Al-Si alloys, tin is regarded as a contaminant; thus, its amount is limited to up to 0.3 wt.%. The few studies that can be found in the literature regarding the behaviour of tin in aluminium alloys suggest the beneficial effect of this element on selected properties. However, these results were obtained for hypereutectic Al-Si alloys or wrought aluminium alloys. In our studies, the influence of tin contents of up to 1.7 wt.% was determined on the AlSi10 alloy. Thermal analysis, measurements of the mechanical properties of the cast and heat-treated alloy, metallographic observations (light microscopy, scanning electron microscopy), and EDS (X-ray energy dispersive spectrometry) measurement allowed us to fully describe the effect of tin on the aluminium alloy. The results of the thermal analysis showed changes in the range of the α-Al solution crystallisation and the α+β eutectic through a decrease in the alloy’s solidification start point and eutectic solidification point. As a result, the elongation of the alloy was more than double in the AlSi10Sn1.7 alloy, with an A5 value of 8.1% and a tensile strength that was above 200 MPa.
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32

Mohammed A. Abuqunaydah, Zayad M. Sheggaf, Muheieddin Meftah Elghanudi y Salem A. Salem. "Recyclability of aluminium piston alloy". مجلة جامعة بني وليد للعلوم الإنسانية والتطبيقية 8, n.º 3 (7 de septiembre de 2023): 99–103. http://dx.doi.org/10.58916/jhas.v8i3.122.

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One of the most recycled and recyclable materials now in use is aluminium. Frequently, aluminium cans, automobile components, and window frames are recycled back into itself. A vital component of the contemporary aluminium industry is recycling. Recycled aluminium production uses only around 5% of the energy required to produce new aluminium, resulting in lower carbon emissions and cost savings for both corporations and end users. As a result, today's use of roughly 75% of all aluminum created throughout history. Recycling rates for aluminium exceed 90% in the majority of industrial sectors, including the construction and automobile industries. Every year, the United States saves more than 90 million barrels of oil equivalent through industry recycling. Capability to re-melting aluminium alloys scrap without losing its alloying elements and finding optimum pouring temperature are the purpose of this paper, and the results will determine the possibility of reusing piston alloy to make components similar to those they were recycled from. Automotive cast aluminium scrap obtained from pistons were used as experimental specimens, which were melted via an electrical furnace then poured at four different temperatures, namely 680, 720, 760, and 800 °C into a strip fluidity steel mould. The chemical composition of the four specimens were examined using spark emission spectrometer and the length of melted metal that flowed through the mould strips was measured as well to determine fluidity. Also, an optical microscope was used to detect microstructure defects. The chemical composition ratios of alloying elements before and after recycling showed that the resulting alloys could be closely equivalent to the commercial alloy that was originally used to make the components. In addition, the higher the pouring temperature the greater the casting fluidity. Generally, the consumed aluminium piston alloy can be re-melted and used to produce many parts.
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33

Ji, Kang, Guanfeng Li, Yongbao Sun, Jia Xu, Hui Chen, Kaiyan Chen, Yan Zhu y Yong Li. "A Constitutive Model for Yield Strength and Work Hardening Behaviour of Aluminium Alloys during Artificial Ageing". Metals 10, n.º 8 (13 de agosto de 2020): 1094. http://dx.doi.org/10.3390/met10081094.

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In this study, a unified constitutive model has been developed for both yield strength and work hardening behaviour prediction of aluminium alloys with different types of precipitates during and after artificial ageing. The different type and dimensions of general precipitate shapes (sphere, plate, rod) have been classified and modelled by a primary dimension and aspect ratio, with which a general set of equations has been utilised to model the precipitates evolutions during ageing of various aluminium alloys. In addition, the effects of main microstructures on not only yield strength but also work-hardening behaviour of artificially aged aluminium alloys have been considered and modelled, based on which, a whole set of unified constitutive model considering both micro- and macro-properties for long-term artificial ageing of aluminium alloys has been proposed. Artificial ageing of two representative aluminium alloys (an Al-Mg-Si alloy AA6063 and an Al-Cu-Li alloy AA2198) has been adopted to show the capability and effectiveness of the developed model. The results show that the model can successfully predict the microstructures, yield strength and work hardening behaviour of various aluminium alloys with different precipitate types after long-term artificial ageing process, e.g., from 0 h to 500 h. It is believed that the model can be used for ageing of other aluminium alloys with dominant sphere, plate or rod-shaped precipitates.
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34

Khalid, Inzamam. "A Brief Review on the Electrical Resistivity Of Aluminium Alloy and its Nanoparticles at Low Temperature". Computational And Experimental Research In Materials And Renewable Energy 5, n.º 2 (11 de noviembre de 2022): 133. http://dx.doi.org/10.19184/cerimre.v5i2.33637.

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The objective of this review article is to study the resistivity of aluminium alloy at low temperatures. Various articles have been thoroughly studied for this review. Alloys that contain Al as dominant metal are termed as Al alloys. The first conventional Al alloy was prepared A6160 whose major constituents are Si and Mg. Al metal in its pure form has very high electrical conductivity but it is soft. Foils and conductor cables are made of Al. For advanced applications, Al is alloyed. The review has briefly explained the physical background of electrical resistivity and analysis of chosen material, aluminium alloy. Furthermore it has also discussed the resistivity of nanoparticles of Aluminium alloy.Keywords: Aluminium alloys, electrical resistivity, temperature, impurity.
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35

Hurtalová, Lenka, Eva Tillová, Mária Chalupová y Jaroslaw Piątkowski. "Optical and Scanning Electron Microscope Studies of Recycled (Secondary) Al-Si Cast Alloys". Solid State Phenomena 203-204 (junio de 2013): 266–71. http://dx.doi.org/10.4028/www.scientific.net/ssp.203-204.266.

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Production of primary Al- alloys belong to heavy source fouling of life environs. Care of environment in industry of aluminium connects with the decreasing consumptions resource as energy, materials, water and soil, with increase recycling and extension life of products. Recycled (secondary) aluminium alloys are made out of Al-scrap and workable Al-garbage by recycling. Applications of these alloys in recent years increase especially in automotive industry (dynamic exposed cast, engine parts, cylinder heads, pistons and so on). Controlling the microstructure of secondary aluminium cast alloy is very important, because these alloy containing more of additions elements, that forming various intermetallic phases in the structure. Improved mechanical properties of secondary alloys are strongly dependent upon the morphologies, type and distribution of the second phases, which are in turn a function of alloy composition and cooling rate. The presence of additional elements as Mg, Mn, Fe or Cu allows many complex intermetallic phases to form, which make characterization non-trivial. A combination of different analytical techniques (light microscopy, scanning electron microscopy (SEM) upon deep etching and energy dispersive X-ray analysis (EDX)) were therefore been used for the various phases identification.
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36

Atkinson, Helen V. "Alloys for Semi-Solid Processing". Solid State Phenomena 192-193 (octubre de 2012): 16–27. http://dx.doi.org/10.4028/www.scientific.net/ssp.192-193.16.

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The main alloys which have been semi-solid processed commercially are based on aluminium (particularly the cast compositions) and magnesium. There is a strong drive to broaden the range of alloys to the wrought compositions for aluminium, more creep-resistant magnesium recipes and to higher temperature alloys such as those based on copper, steels, stellites and cast irons. This paper will summarise the issues with such development including the scientific and practical issues for alloy design and the thermodynamic prediction of alloys suitable for semi-solid processing. After an initial introduction to semi-solid processing routes, the most important alloy systems for semi-solid processing from a development point of view (aluminium, magnesium, steels and composites- including nanocomposites) will be discussed. The key issues of alloy design specifically for semi-solid processing will be drawn out through the text.
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37

Dostál, Petr, Michal Černý, Jaroslav Lev y David Varner. "Proportional monitoring of the acoustic emission in crypto-conditions". Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59, n.º 5 (2011): 31–38. http://dx.doi.org/10.11118/actaun201159050031.

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The work is aimed at studying corrosion and fatigue properties of aluminum alloys by means of acoustic emission (AE). During material degradation are acoustic events scanned and evaluated. The main objective of the article is a description of behavior of aluminum alloys degraded in specific conditions and critical degradation stages determination. The first part of the article describes controlled degradation of the material in the crypto–conditions. The acoustic emission method is used for process analyzing. This part contains the AE signals assessment and comparing aluminium alloy to steel. Then the specimens are loaded on high-cyclic loading apparatus for fatigue life monitoring. Also, the synergy of fatigue and corrosion processes is taken into account.The aim is the description of fatigue properties for aluminum alloys that have already been corrosion-degraded. Attention is also focused on the structure of fatigue cracks. The main part of the article is aimed at corrosion degradation of aluminium alloys researched in real time by means of AE. The most important benefit of AE detection/recording is that it provides information about the process in real time. Using this measurement system is possible to observe the current status of the machines/devices and to prevent serious accidents.
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38

Jitchoom, Sirintra, Siriporn Rojananan y Surasit Rojananan. "Influence of Aluminium on the Color, Microstructure and Hardness of White Alloys". Advanced Materials Research 802 (septiembre de 2013): 159–63. http://dx.doi.org/10.4028/www.scientific.net/amr.802.159.

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The objective of this paper was to study the influence of aluminium on the color, microstructure and hardness of the as-cast nickel-free white alloys. In order to specify the suitable aluminium content, aluminium in each composition varied from 0, 1, 2, 3, 4 and 5 wt% were investigated. The CIE LAB color system was selected to describe the color of alloys. The results indicated that the increase in the aluminium contents, red-green values (a*) were gradually increased, but yellow-blue values (b*) were slightly decreased. No correlation had been found between the aluminium content and lightness (L*). The microstructures of alloys consisted of the alpha, beta phases and small particles. The hardness of alloys was increased with increasing in the aluminium contents. It was distinct that the hardness of aluminium-free alloy (117 HV) was the lowest value in comparison with other alloys. The obtained results suggested that the variation in the aluminium contents of had a pronounced effect on the increasing hardness and the development of structures. However, the aluminium addition in the ranges of 1.3-5.1wt% resulted in a gradual changing the color.
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39

Rometsch, Paul A., Zhou Xu, Hao Zhong, Huai Yang, Lin Ju y Xin Hua Wu. "Strength and Electrical Conductivity Relationships in Al-Mg-Si and Al-Sc Alloys". Materials Science Forum 794-796 (junio de 2014): 827–32. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.827.

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Aluminium alloys play an important role in overhead power transmission applications. All-aluminium alloy conductor cables require increasingly hard-to-achieve combinations of high tensile strength and high electrical conductivity. The problem is that a high strength is normally associated with a reduced electrical conductivity. Both heat-treatable 6xxx series aluminium alloys and work-hardening 1xxx series aluminium alloys are important contenders for these applications. By contrast, the addition of rare earths and/or transition metals to aluminium may provide further opportunities to achieve improved combinations of precipitation hardening, substructural hardening and elevated temperature stability. In this work, strength and electrical conductivity relationships are investigated for a range of 6xxx series aluminium alloys and an Al-Sc alloy. The Al-Sc alloy was produced by means of a direct laser metal deposition process that allowed more Sc to be placed into solid solution than by conventional casting or solution treatment. The paper explores the relative effects of composition, cold working and age hardening on the balance of strength and electrical conductivity, including examples of how improved combinations of both strength and conductivity can be achieved.
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40

Sheshukov, O. Yu y V. V. Kataev. "Influence of titanium and zirconium on structure and heat-resistance of low-carbon iron-aluminium alloys". Izvestiya. Ferrous Metallurgy 64, n.º 9 (9 de octubre de 2021): 685–92. http://dx.doi.org/10.17073/0368-0797-2021-9-685-692.

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The paper considers the effect of introducing ferroalloys containing titanium and zirconium on the structure and heat-resistance of low-carbon ferroalloys. Theoretically and experimentally, it has been proven that addition of 1.0 mass. % of titanium and 0.1 mass. % of zirconium to a low-carbon iron-aluminum melt containing 12 – 14 mass. % of aluminum, grinds its structure increasing temporary resistance and heat-melting. Titanium and zirconium are strong carbide-forming elements. When introduced into a low-carbon iron-aluminium alloy, they form a large number of crystallization centers, thus affecting its microstructure, allowing to get shredded and more equal grain compared to an alloy without additive. This in turn increases the strength limit of processed alloy. In addition, the use of titanium as a modifying additive in a low-carbon ferroalloy allows increasing its heatresistance, which exceeds several times the heat-resistance of famous chrome-nickel steel of 20Kh23N18 grade. As a result, a new technology for obtaining titanium and zirconium was developed based on research of the effect of their modifying additives on the structure and heat-resistance of low-carbon iron-aluminum alloys.
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41

Stone, H. E. N. "Hypereutectic aluminium-manganese alloys". Journal of Materials Science Letters 12, n.º 1 (enero de 1993): 30–31. http://dx.doi.org/10.1007/bf00275462.

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42

Gaspar, Stefan, Ján Pasko y Ján Majerník. "Crystallization of Aluminium Alloys". Applied Mechanics and Materials 624 (agosto de 2014): 48–51. http://dx.doi.org/10.4028/www.scientific.net/amm.624.48.

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The structure and properties of cast metals and alloys are in a high degree influenced by crystallization conditions. By the technological interventions into the crystallization process the mechanical properties and structural parameters of castings can be enhanced. The present contribution deals with the regularities of crystallization of alloys Al-Si produced by die casting process.
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43

Flower, H. M. "Aluminium-Lithium Alloys III". Surface Engineering 2, n.º 3 (enero de 1986): 165–66. http://dx.doi.org/10.1179/sur.1986.2.3.165.

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44

Andersen, Sigmund J., Calin D. Marioara, Jesper Friis, Sigurd Wenner y Randi Holmestad. "Precipitates in aluminium alloys". Advances in Physics: X 3, n.º 1 (enero de 2018): 1479984. http://dx.doi.org/10.1080/23746149.2018.1479984.

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45

Sugiyama, Y. "Brazing of aluminium alloys". Welding International 3, n.º 8 (enero de 1989): 700–710. http://dx.doi.org/10.1080/09507118909446642.

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46

Cahn, Robert W. "Aluminium-based glassy alloys". Nature 341, n.º 6239 (septiembre de 1989): 183–84. http://dx.doi.org/10.1038/341183a0.

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47

Thompson, G. E., H. Habazaki, K. Shimizu, M. Sakairi, P. Skeldon, X. Zhou y G. C. Wood. "Anodizing of aluminium alloys". Aircraft Engineering and Aerospace Technology 71, n.º 3 (junio de 1999): 228–38. http://dx.doi.org/10.1108/00022669910270709.

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48

Chayong, S., H. V. Atkinson y P. Kapranos. "Thixoforming 7075 aluminium alloys". Materials Science and Engineering: A 390, n.º 1-2 (enero de 2005): 3–12. http://dx.doi.org/10.1016/j.msea.2004.05.004.

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49

Røyset, J. y N. Ryum. "Scandium in aluminium alloys". International Materials Reviews 50, n.º 1 (febrero de 2005): 19–44. http://dx.doi.org/10.1179/174328005x14311.

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50

Woodward, Roy. "Developments in aluminium alloys". Materials & Design 10, n.º 5 (septiembre de 1989): 248–54. http://dx.doi.org/10.1016/s0261-3069(89)80062-7.

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