Relevant bibliographies by topics / Magnesium metal matrix nanocomposites

Academic literature on the topic 'Magnesium metal matrix nanocomposites'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Magnesium metal matrix nanocomposites"

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Parthiban, K., and Lakshmanan Poovazhgan. "Ultrasonication Assisted Fabrication of Aluminum and Magnesium Matrix Nanocomposites - A Review." Materials Science Forum 979 (March 2020): 63–67. http://dx.doi.org/10.4028/www.scientific.net/msf.979.63.

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Recent researches in the domain of casting confirmed that the mechanical properties of aluminum and magnesium based nanocomposites can be appreciably enhanced when ultrasonic cavitation assisted solidification processing is used. Ultrasonic cavitation assisted solidification processing is used for the manufacturing of aluminum and magnesium alloy based metal matrix nanocomposites reinforced with nanoceramic particles. In this solidification processing, formation of clusters have been minimized and the nanoreinforcements were distributed uniformly in aluminum and magnesium matrix nanocomposites. The ultrasonic assisted casting approach will manage the grain dimensions via minimizing agglomeration of nanoparticles in metal matrices. This paper opinions the properties and morphology of aluminum and magnesium based metal matrix nanocomposites fabricated through ultrasonic assisted casting process.
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Malaki, Massoud, Wenwu Xu, Ashish Kasar, Pradeep Menezes, Hajo Dieringa, Rajender Varma, and Manoj Gupta. "Advanced Metal Matrix Nanocomposites." Metals 9, no. 3 (March 15, 2019): 330. http://dx.doi.org/10.3390/met9030330.

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Lightweight high-strength metal matrix nano-composites (MMNCs) can be used in a wide variety of applications, e.g., aerospace, automotive, and biomedical engineering, owing to their sustainability, increased specific strength/stiffness, enhanced elevated temperature strength, improved wear, or corrosion resistance. A metallic matrix, commonly comprising of light aluminum or magnesium alloys, can be significantly strengthened even by very low weight fractions (~1 wt%) of well-dispersed nanoparticles. This review discusses the recent advancements in the fabrication of metal matrix nanocomposites starting with manufacturing routes and different nanoparticles, intricacies of the underlying physics, and the mechanisms of particle dispersion in a particle-metal composite system. Thereafter, the microstructural influences of the nanoparticles on the composite system are outlined and the theory of the strengthening mechanisms is also explained. Finally, microstructural, mechanical, and tribological properties of the selected MMNCs are discussed as well.
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Han, Guo Qiang, Wen Bo Du, Zhao Hui Wang, Ke Liu, Shu Bo Li, and Xian Du. "Effective Dispersion of CNTs to Fabricate CNT/Mg Nanocomposite." Materials Science Forum 816 (April 2015): 470–75. http://dx.doi.org/10.4028/www.scientific.net/msf.816.470.

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An effective dispersion process to cast CNT-reinforced in a concentrated magnesium alloy (AZ31) nanocomposite was investigated in this study. The metal magnesium powder was first coated with dispersed CNTs by wet process, followed by the fabricating of CNT/Mg precursor using mechanical briquetting and extrusion. The resultant precursor was then added into AZ31 alloy during the melting process. Finally, CNT/Mg nanocomposites with grain refinement matrix composite were fabricated in as-cast and as-extruded. Compared with the commercial AZ31 alloy, CNT/Mg nanocomposites exhibited higher yield strength of 270 MPa with an increase of 22.7%, which can be largely ascribed to the effective dispersion process of CNTs in the alloy matrix, and the elongation is no significant decrease.
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Lee, Han Joo, Jae Kyung Han, Byung Min Ahn, Megumi Kawasaki, and Terence G. Langdon. "Mechanical Behavior of a Metal Matrix Nanocomposite Synthesized by High-Pressure Torsion via Diffusion Bonding." Materials Science Forum 879 (November 2016): 1068–73. http://dx.doi.org/10.4028/www.scientific.net/msf.879.1068.

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High-pressure torsion (HPT) is one of the major severe plastic deformation (SPD) procedures where disk metals generally achieve exceptional grain refinement at ambient temperatures. HPT has been applied for the consolidation of metallic powders and bonding of machining chips whereas very limited reports examined the application of HPT for the fabrication of nanocomposites. An investigation was initiated to evaluate the potential for the formation of a metal matrix nanocomposite (MMNC) by processing two commercial metal disks of Al-1050 and ZK60 magnesium alloy through HPT at room temperature. Evolutions in microstructure and mechanical properties including hardness and plasticity were examined in the processed disks with increasing numbers of HPT turns up to 5. This study demonstrates the promising possibility for using HPT to fabricate a wide range of hybrid MMNCs from simple metals.
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De Cicco, Michael, Lih Sheng Turng, Xiao Chun Li, and John H. Perepezko. "Semi-Solid Casting of Metal Matrix Nanocomposites." Solid State Phenomena 116-117 (October 2006): 478–83. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.478.

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Semi-solid casting (SSC) techniques have proven useful in the mass production of high integrity castings for the automotive and other industries. Recent research has shown metal matrix nanocomposite (MMNC) materials to have greatly improved properties in comparison to their base metals. However, current methods of MMNC production are costly and time consuming. Thus development of a process that combines the integrity and cost effectiveness of semi-solid casting with the property improvement of MMNCs would have the potential to greatly improve cast part quality available to engineers in a wide variety of industries. This paper presents a method of combining SSC with MMNC in a way that benefits from MMNCs’ tendency to naturally form the globular microstructure necessary for SSC. This method uses ultrasonically dispersed nanoparticles as nucleating agents to achieve globular primary grains such that fluidity is maintained even at high solid fractions. Once particle dispersion is achieved, the material needs no further processing to become a semi-solid slurry of globular primary grains as it cools. This quiescent method of slurry production, while still imposing some constraints on cooling rates, has a large process window making this process capable of industrial rates of throughput. It was found that the key factor to achieving globular microstructure is a sufficiently slow cooling rate at the onset of solidification such that particle-induced nucleation can occur. Once nucleation occurs, continued cooling is virtually unconstrained, with globular microstructure evident in quenched samples as well as samples cooled at rates as slow as 1 °C/min. This method was demonstrated in several material systems using zinc (Zn), aluminum (Al), and magnesium (Mg) alloys and nanoparticles of aluminum oxide (Al2O3), silicon carbide (SiC), and titanium oxide (TiO2). Additionally, several nucleation models are examined for applicability to nanoscale composites.
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Kumar, Dinesh, and Lalit Thakur. "Recent Studies on the Fabrication of Magnesium Based Metal Matrix Nano-Composites by Using Ultrasonic Stir Casting Technique - A Review." Materials Science Forum 969 (August 2019): 889–94. http://dx.doi.org/10.4028/www.scientific.net/msf.969.889.

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This paper presents the recent studies on the fabrication of magnesium based metal matrix nanocomposites (MMMC) by using ultrasonic assisted stir casting technique. The pure metal and alloys, due to their limited mechanical properties are not suitable for various engineering applications. It has been observed that the addition of suitable reinforcements into metallic matrix improves the specific strength, ultimate tensile strength, porosity and wear properties as compared to the conventional and monolithic engineering materials for aerospace and automotive applications. The effects of ultrasonic vibrations and the resulting uniform dispersion of reinforcements on the mechanical and tribological properties of magnesium based MMCs are specifically highlighted in this paper.
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Kousik Suraparaju, Subbarama, P. Venkatasreenivasula Reddy, P. Venkata Ramaiah, K. Dharma Reddy, and Sendhil Kumar Natarajan. "Optimization of Process Parameters in Drilling of Al6063 Reinforced with Magnesium Oxide Nano Particles." Advanced Science, Engineering and Medicine 12, no. 10 (October 1, 2020): 1303–8. http://dx.doi.org/10.1166/asem.2020.2583.

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Aluminum Nano Metal Matrix Composites are extensively utilized for high-performance operations such as branches of engineering and medicine due to their enhanced physical and mechanical properties compared to traditional metals and metal alloys. In this research, Al6063 alloy was reinforced with 15 nm sized Magnesium Oxide particles in different weight percentages. The development of Nano Metal Matrix Composites (NMMC) was completed through stir casting method at 750 °C temperature. The fabricated Nanocomposites were examined for the mechanical properties and impact of drilling parameters on chips and burr formation. The input parameters adopted for analysis were speed, feed, and material of the drill tool. The drill tools made of HSS & TiN coated HSS were utilized in the drilling of NMMC. The influence of process parameters on chips and burr formation were analyzed and optimized the process parameters for better output intended for this experimental environment through the Artificial Immune Algorithm technique.
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Dadkhah, Mehran, Abdollah Saboori, and Paolo Fino. "An Overview of the Recent Developments in Metal Matrix Nanocomposites Reinforced by Graphene." Materials 12, no. 17 (September 2, 2019): 2823. http://dx.doi.org/10.3390/ma12172823.

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Two-dimensional graphene plateletes with unique mechanical, electrical and thermo-physical properties could attract more attention for their employed as reinforcements in the production of new metal matrix nanocomposites (MMNCs), due to superior characteristics, such as being lightweight, high strength and high performance. Over the last years, due to the rapid advances of nanotechnology, increasing demand for the development of advanced MMNCs for various applications, such as structural engineering and functional device applications, has been generated. The purpose of this work is to review recent research into the development in the powder-based production, property characterization and application of magnesium, aluminum, copper, nickel, titanium and iron matrix nanocomposites reinforced with graphene. These include a comparison between the properties of graphene and another well-known carbonaceous reinforcement (carbon nanotube), following by powder-based processing strategies of MMNCs above, their mechanical and tribological properties and their electrical and thermal conductivities. The effects of graphene distribution in the metal matrices and the types of interfacial bonding are also discussed. Fundamentals and the structure–property relationship of such novel nanocomposites have also been discussed and reported.
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Abazari, Somayeh, Ali Shamsipur, Hamid Reza Bakhsheshi-Rad, Ahmad Fauzi Ismail, Safian Sharif, Mahmood Razzaghi, Seeram Ramakrishna, and Filippo Berto. "Carbon Nanotubes (CNTs)-Reinforced Magnesium-Based Matrix Composites: A Comprehensive Review." Materials 13, no. 19 (October 4, 2020): 4421. http://dx.doi.org/10.3390/ma13194421.

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In recent years considerable attention has been attracted to magnesium because of its light weight, high specific strength, and ease of recycling. Because of the growing demand for lightweight materials in aerospace, medical and automotive industries, magnesium-based metal matrix nanocomposites (MMNCs) reinforced with ceramic nanometer-sized particles, graphene nanoplatelets (GNPs) or carbon nanotubes (CNTs) were developed. CNTs have excellent material characteristics like low density, high tensile strength, high ratio of surface-to-volume, and high thermal conductivity that makes them attractive to use as reinforcements to fabricate high-performance, and high-strength metal-matrix composites (MMCs). Reinforcing magnesium (Mg) using small amounts of CNTs can improve the mechanical and physical properties in the fabricated lightweight and high-performance nanocomposite. Nevertheless, the incorporation of CNTs into a Mg-based matrix faces some challenges, and a uniform distribution is dependent on the parameters of the fabricating process. The characteristics of a CNTs reinforced composite are related to the uniform distribution, weight percent, and length of the CNTs, as well as the interfacial bonding and alignment between CNTs reinforcement and the Mg-based matrix. In this review article, the recent findings in the fabricating methods, characterization of the composite’s properties, and application of Mg-based composites reinforced with CNTs are studied. These include the strategies of fabricating CNT-reinforced Mg-based composites, mechanical responses, and corrosion behaviors. The present review aims to investigate and conclude the most relevant studies conducted in the field of Mg/CNTs composites. Strategies to conquer complicated challenges are suggested and potential fields of Mg/CNTs composites as upcoming structural material regarding functional requirements in aerospace, medical and automotive industries are particularly presented.
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Jia, X. Y., S. Y. Liu, F. P. Gao, Q. Y. Zhang, and W. Z. Li. "Magnesium matrix nanocomposites fabricated by ultrasonic assisted casting." International Journal of Cast Metals Research 22, no. 1-4 (August 2009): 196–99. http://dx.doi.org/10.1179/136404609x367704.

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Dissertations / Theses on the topic "Magnesium metal matrix nanocomposites"

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Pallikonda, Mahesh Kumar Pallikonda. "FORMING A METAL MATRIX NANOCOMPOSITE (MMNC) WITH FULLY DISPERSED AND DEAGGLOMERATED MULTIWALLED CARBON NANOTUBES (MWCNTs)." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1503937490966191.

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Mallmann, Camila. "Mechanisms of plastic deformation of magnesium matrix nanocomposites." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI083/document.

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Le magnésium est le plus léger des métaux, ce qui lui confère un fort potentiel pour être utilisé dans des applications où l’allégement des structures est requis. Pour autant, sa résistance mécanique est très faible, et doit donc être augmentée afin de rivaliser avec d’autres métaux légers tels que l’aluminium ou le titane. Une solution consiste à renforcer le magnésium et ses alliages en introduisant des nanoparticules d’oxydes. De par sa structure cristalline hexagonale compacte, le magnésium présente des propriétés plastiques complexes telles qu’une très forte anisotropie plastique et une prédisposition au maclage. La compréhension de ces mécanismes de déformation est essentielle pour le développement de nanocomposites plus performants en vue d’une utilisation industrielle plus répandue. Dans ce travail, nous nous sommes intéressés à l'élaboration et à la caractérisation de nanocomposites de magnésium pur renforcés par des particules d’oxydes. Différentes techniques ont été testées pour l’élaboration des nanocomposites : la solidification assistée aux ultrasons et le procédé de friction malaxage. L’homogénéité de la dispersion des particules a été vérifiée en 2D par observations en microscopie électronique et également en 3D par tomographie aux rayons X. On montre ainsi que le procédé de friction malaxage permet d'obtenir une distribution homogène des particules, tout en réduisant leur taille. Des essais de traction ont permis de mettre en évidence une augmentation de la limité d’élasticité pour une fraction volumique aussi faible que 0.3 %. Afin d’isoler le rôle des particules de celui des joints de grains sur le comportement plastique du nanocomposite, nous avons réalisé des essais de micro-compression sur des micro-piliers monocristallins usinés par canon à ions focalisés (FIB) dans des échantillons ayant préalablement subis un traitement thermique favorisant la croissance anormale des grains. Différentes orientations cristallines et tailles de micro-piliers ont été testées en vue d'étudier l’influence des particules d’une part sur la plasticité dans le plan basal par mouvement de dislocations et d’autre part sur la déformation par maclage. Contre toute attente, les essais sur monocristaux favorablement orientés pour un glissement basal ne montrent pas l’effet durcissant observé macroscopiquement. Nous attribuons cet effet à la densité initiale de dislocations mobiles, plus importante dans les nanocomposites que dans le magnésium pur, du fait des concentrations de contraintes autour des particules. Ces densités initiales de dislocations mobiles tendent également à supprimer l'effet de taille classiquement observé dans le magnésium pur. Les particules modifient également le mécanisme de déformation par maclage en favorisant l’apparition simultanée de plusieurs macles dans le micro-pilier qui interagissent entre elles au cours de la déformation alors que les micro-piliers de magnésium pur présentent généralement une macle unique (dans certains cas deux) qui envahi tout le monocristal. Ces résultats constituent une contribution originale à la compréhension du rôle des nanoparticules dans la déformation plastique des monocristaux de nanocomposites à base de magnésium
Magnesium is the lightest of all structural metals, which gives it a huge potential to be used in applications that require lightweighting. However, its strength needs to be increased in order to compete with other light metals such as aluminum and titanium. A solution is the reinforcement of magnesium and its alloys with the addition of oxide nanoparticles. The hexagonal close packed crystalline structure is responsible for the complex plasticity of magnesium, which is characterized by a very strong plastic anisotropy as well as a complex twinning activity. Understanding these deformation mechanisms is crucial for the development of more performant nanocomposites, allowing widespread industrial application. The present work focuses on the processing and characterization of magnesium based nanocomposites reinforced with oxide particles. Two different processing techniques have been compared: friction stir processing and ultrasound assisted casting. The homogeneity of the dispersion of the reinforcement particles has been verified in 2 and 3 dimensions using electron microscopy and X-ray tomography, respectively. Friction stir processing produces nanocomposites with a more homogeneous dispersion of particles, while reducing their size. Tensile tests have shown strengthening of magnesium with the addition of a volume fraction of only 0.3 % of reinforcement. An annealing heat treatment has then been performed in order to promote abnormal grain growth and single crystalline microcolumns for microcompression testing have been machined by focused ion beam (FIB). The purpose is to isolate the role of particles. The orientation dependent mechanism of deformation and the size effects have been studied in order to understand the influence of the reinforcement particles on the plasticity for orientations favorable for basal slip or tensile twinning. Differently from the strengthening observed macroscopically, no clear strengthening effect is observed on microcolumns when dislocation glide operates. The reason is the higher density of potentially mobile dislocations that is generated due to stress concentrations around the reinforcement particles. In addition, the size effects usually observed on pure magnesium have also been suppressed with the addition of particles. The reinforcement particles seem to affect the twin nucleation stress and twin morphology: particles induce the nucleation of multiple twins inside a microcolumn, whereas in pure magnesium, only one or two twins have been observed. These results provide relevant insights on the role of nanoparticles on the onset of plastic deformation, as well as size effect, in single crystalline magnesium nanocomposites
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Shin, Dongho. "Microstructual Characteristics of Magnesium Metal Matrix Composites." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5494.

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Magnesium (Mg) Metal matrix composites (MMCs) reinforced by ceramic reinforcements are being developed for a variety of applications in automotive and aerospace because of their strength-to-weight ratio. Reinforcement being considered includes SiC, Al2O3, Carbon fiber and B4C in order to improve the mechanical properties of MMCs. Microstructural and interfacial characteristics of MMCs can play a critical role in controlling the MMCs' mechanical properties. This study was carried out to understand the microstructural and interfacial development between Mg-9wt.Al-1wt.Zn (AZ91) alloy matrix and several reinforcements including SiC, Al2O3, Carbon fibers and B4C. X-ray diffraction, scanning electron microscopy and transmission electron microscopy was employed to investigate the microstructure and interfaces. Al increase in hardness due to the presence of reinforcements was also documented via Vicker's hardness measurements. Thermodynamic consideration based on Gibbs free energy was employed along with experimental results to describe the interfacial characteristics of MMCs. Reaction products from AZ91-SiC and AZ91-Al2O3 interfaces were identified as MgO, since the surface of SiC particles is typically covered with SiO2 and the MgO is the most thermodynamically stable phase in these systems. The AZ91-Carbon fiber interface consist of Al4C3 and this carbide phase is considered detrimental to the mechanical toughness of MMCs. The AZ91-B4C interface was observed to contain MgB2 and MgB2C2. In general, Vicker's hardness increased by 3X due to the presence of these reinforcements.
ID: 031001275; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Adviser: Yongho Sohn.; Title from PDF title page (viewed February 22, 2013).; Thesis (M.S.M.S.E.)--University of Central Florida, 2012.; Includes bibliographical references (p. 49-51).
M.S.M.S.E.
Masters
Materials Science Engineering
Engineering and Computer Science
Materials Science and Engineering
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Kandemir, Sinan. "Semi-solid processing of metal matrix nanocomposites." Thesis, University of Leicester, 2013. http://hdl.handle.net/2381/28146.

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Metal matrix nanocomposites (MMNCs) can significantly improve mechanical properties of light alloys such as aluminium alloys beyond the properties of conventional metal matrix composites (where the reinforcement particles are micronsized). Therefore, MMNCs are potentially strong candidates for use in the automotive industry, where the mechanical performance and energy conservation are highly demanded. However, the challenge is to incorporate ceramic nanoparticles into liquid metals due to their large surface – to – volume ratio and poor wettability. In the present study, several nanoparticle feeding mechanisms (the most critical factor in the fabrication of nanocomposites by the ultrasonic method) were explored. SiC and TiB2 nanoparticles with an average diameter between 20nm and 30nm were dispersed through liquid A356 alloy with a green compact nanoparticle incorporation method under ultrasonic cavitation and streaming. The green compact method which has been developed during this project was found to be a promising mechanism achieving the engulfment and relatively effective distribution of the nanoparticles into the melt. Advanced FEGSEM and TEM techniques were used for the microstructural characterisation of the nanocomposites. The microstructural studies reveal that the nanoparticles were embedded into A356 alloy without any observed intermediate phase between the particles and matrix. It has been shown that with only 0.8 wt.% addition of the nanoparticles, the hardness was considerably improved. The nanocomposite billets were reheated into the semi-solid state to be thixoformed at a solid fraction between 0.65 and 0.70 for near net shape components with reduced porosity. The feasibility of thixoforming for aluminium nanocomposites was demonstrated. The microstructures, hardness and tensile mechanical properties of the thixoformed nanocomposites were investigated and compared with those of the asreceived A356 and thixoformed A356 alloys. The tensile properties of the thixoformed nanocomposites were enhanced compared to thixoformed A356 alloy without reinforcement, indicating the strengthening effects of the nanoparticles.
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Williams, J. R. "Corrosion of aluminium-copper-magnesium metal matrix composites." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239852.

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Hicks, Kevin Paul. "A study of magnesium and magnesium alloy composites containing alumina and silicon carbide-based fibres." Thesis, University of Bath, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359089.

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Ha, H. U. "Squeeze casting of magnesium-based alloys and their metal matrix composites." Thesis, University of Southampton, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383410.

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Warwick, Cyril Marcus. "Microstructural and thermomechanical stability of fibrous metal matrix composites based on magnesium-lithium." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291604.

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Vanderhout, Amy Ruth. "Synthesis and mechanical characterization of aligned carbon nanotube metal- and carbon-matrix nanocomposites." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127095.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, May, 2020
Cataloged from the official PDF of thesis.
Includes bibliographical references (pages 203-224).
Carbon nanotube (CNT) assemblies are seeing increasing use in engineering applications due to their advantaged, mass-specific physical properties. The high strength-to-weight ratio, electrical and thermal conductivity, and elastic properties make CNTs ideal for many aerospace, automotive, and electrical applications. In structural materials, CNTs are an outstanding candidate to provide nano-reinforcement, both in hybrid composites and nanocomposites, and they have been found to improve the hardness, yield strength, and conductivity of their matrix material. Additional enhancement of these matrices can be realized by using aligned CNTs (A-CNTs) of increased volume fraction, as explored in this work.
In this thesis, ceramic matrix nanocomposites (CMNCs), specifically A-CNT/carbon matrix nanocomposites (A/C-NCs), are synthesized by first infusing a carbon precursor resin into A-CNT arrays with CNT volume fractions (v[subscript f]) ranging from 1-30 vol%, and then pyrolyzing the resin to create a carbon matrix around the A-CNTs. Previous work with A/C-NC hardness suggests that such a lightweight, superhard material may rival the density-normalized hardness of diamond at high v[subscript f]. Various processes were refined and tested in this work, yielding microscale void-free A/CNCs up to 30% v[subscript f], with an ~7% improvement in hardness over baseline pyrolytic carbon (PyC) for 1% v[subscript f] A/C-NCs and <10% improvement in hardness for 5% v[subscript f] A-CNTs. A reinfusion (i.e. an initial infusion/pyrolysis cycle with three additional reinfusion/pyrolysis cycles) procedure was developed and implemented, and testing is recommended as immediate future work.
Although hardness determination of these reinfused samples is left for future work, the X-ray CT images of the final A/C-NCs after the fourth infusion show excellent infusion and few voids, suggesting that high hardness will be achieved. This thesis also explores and develops synthesis techniques for metal matrix nanocomposites (MMNCs), focusing on an aluminum matrix. As the surface energy of ACNTs is not conducive to wetting by Al (and many other metals), this surface energy must first be altered to allow Al matrix infusion for consistent composite fabrication. TiO₂ is conformally decorated onto ~100 [mu]m-tall A-CNT arrays via atomic layer deposition (ALD). A reduction process for the TiO₂ coating was developed, and a reduction to TiH₂ was determined to be promising, as the TiH₂ will not oxidize prior to Al infusion but can easily be reduced in a vacuum oven apparatus designed specifically to meet the needs of Al infusion.
Towards MMNCs, both solder and aluminum matrices are infused into the TiO₂-decorated A-CNTs. The solder experiments yielded mixed success, as the results suggest that both the reduction and the vacuum infusion steps are important factors determining successful wetting. Although Al infusion into an A-CNT array was unsuccessful without a dedicated Al infusion apparatus, molten Al was found to wet Ti well, which suggests that the Ti coating may allow for successful A-CNT wetting. Additional recommendations are provided to further refine the A/Al-NC fabrication process to improve Al infusion.
by Amy Ruth Vanderhout.
S.M.
S.M. Massachusetts Institute of Technology, Department of Aeronautics and Astronautics
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Dongare, Vishal S. "Hot Extrusion of Carbon Nanotube - Magnesium Matrix Composite Wire." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1415975904.

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Books on the topic "Magnesium metal matrix nanocomposites"

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Ceschini, Lorella, Arne Dahle, Manoj Gupta, Anders Eric Wollmar Jarfors, S. Jayalakshmi, Alessandro Morri, Fabio Rotundo, Stefania Toschi, and R. Arvind Singh. Aluminum and Magnesium Metal Matrix Nanocomposites. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2681-2.

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Gupta, Manoj, Lorella Ceschini, and Arne Dahle. Aluminum and Magnesium Metal Matrix Nanocomposites. Springer, 2016.

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Gupta, Manoj, S. Jayalakshmi, Lorella Ceschini, Arne Dahle, Anders Eric Wollmar Jarfors, Alessandro Morri, Fabio Rotundo, Stefania Toschi, and R. Arvind Singh. Aluminum and Magnesium Metal Matrix Nanocomposites. Springer, 2018.

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Gupta, Manoj, S. Jayalakshmi, Lorella Ceschini, Arne Dahle, and Anders Eric Wollmar Jarfors. Aluminum and Magnesium Metal Matrix Nanocomposites. Springer Singapore Pte. Limited, 2016.

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Center, Langley Research, ed. NASA-UVa light aerospace alloy and structures technology program supplement: Aluminum-based materials for high speed aircraft : semi-annual report July 1, 1992 - December 31, 1992. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1995.

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Center, Langley Research, ed. NASA-UVa light aerospace alloy and structures technology program supplement: Aluminum-based materials for high speed aircraft : semi-annual report July 1, 1992 - December 31, 1992. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1995.

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Center, Langley Research, ed. NASA-UVa light aerospace alloy and structures technology program supplement: Aluminum-based materials for high speed aircraft : semi-annual report July 1, 1992 - December 31, 1992. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1995.

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Book chapters on the topic "Magnesium metal matrix nanocomposites"

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Ceschini, Lorella, Arne Dahle, Manoj Gupta, Anders Eric Wollmar Jarfors, S. Jayalakshmi, Alessandro Morri, Fabio Rotundo, Stefania Toschi, and R. Arvind Singh. "Metal Matrix Nanocomposites: An Overview." In Aluminum and Magnesium Metal Matrix Nanocomposites, 1–17. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2681-2_1.

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Ceschini, Lorella, Arne Dahle, Manoj Gupta, Anders Eric Wollmar Jarfors, S. Jayalakshmi, Alessandro Morri, Fabio Rotundo, Stefania Toschi, and R. Arvind Singh. "Tribological Characteristics of Al and Mg Nanocomposites." In Aluminum and Magnesium Metal Matrix Nanocomposites, 139–51. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2681-2_5.

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Ceschini, Lorella, Arne Dahle, Manoj Gupta, Anders Eric Wollmar Jarfors, S. Jayalakshmi, Alessandro Morri, Fabio Rotundo, Stefania Toschi, and R. Arvind Singh. "Ex Situ Production Routes for Metal Matrix Nanocomposites." In Aluminum and Magnesium Metal Matrix Nanocomposites, 19–40. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2681-2_2.

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Ceschini, Lorella, Arne Dahle, Manoj Gupta, Anders Eric Wollmar Jarfors, S. Jayalakshmi, Alessandro Morri, Fabio Rotundo, Stefania Toschi, and R. Arvind Singh. "Casting Routes for the Production of Al and Mg Based Nanocomposites." In Aluminum and Magnesium Metal Matrix Nanocomposites, 41–93. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2681-2_3.

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Ceschini, Lorella, Arne Dahle, Manoj Gupta, Anders Eric Wollmar Jarfors, S. Jayalakshmi, Alessandro Morri, Fabio Rotundo, Stefania Toschi, and R. Arvind Singh. "Mechanical Behavior of Al and Mg Based Nanocomposites." In Aluminum and Magnesium Metal Matrix Nanocomposites, 95–137. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2681-2_4.

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Ceschini, Lorella, Arne Dahle, Manoj Gupta, Anders Eric Wollmar Jarfors, S. Jayalakshmi, Alessandro Morri, Fabio Rotundo, Stefania Toschi, and R. Arvind Singh. "Future Directions." In Aluminum and Magnesium Metal Matrix Nanocomposites, 153–60. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2681-2_6.

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Pusztai, Tamás, László Rátkai, Attila Szállás, and László Gránásy. "Phase-Field Modeling of Solidification in Light-Metal Matrix Nanocomposites." In Magnesium Technology 2014, 455–59. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-48231-6_83.

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Pusztai, Tamás, László Rátkai, Attila Szállás, and László Gránásy. "Phase-Field Modeling of Solidification in Light-Metal Matrix Nanocomposites." In Magnesium Technology 2014, 455–59. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118888179.ch83.

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Dieringa, Hajo, and Norbert Hort. "Magnesium-Based Metal Matrix Nanocomposites—Processing and Properties." In TMS 2018 147th Annual Meeting & Exhibition Supplemental Proceedings, 679–91. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72526-0_64.

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Tekumalla, Sravya, Shikhar Bharadwaj, T. S. Srivatsan, and Manoj Gupta. "An Engineered Magnesium Alloy Nanocomposite: Mechanisms Governing Microstructural Development and Mechanical Properties." In Metal-Matrix Composites Innovations, Advances and Applications, 193–202. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72853-7_13.

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Conference papers on the topic "Magnesium metal matrix nanocomposites"

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Cao, Guoping, Hiromi Konishi, and Xiaochun Li. "Study on Mechanical Properties and Microstructure of Magnesium/SiC Nanocomposites Fabricated by Ultrasonic Cavitation Based Solidification Processing." In ASME 2007 International Manufacturing Science and Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/msec2007-31165.

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Magnesium, the lightest structural metal, is of significance to improve energy efficiency in various applications. Mg/SiC nanocomposites were successfully fabricated by ultrasonic cavitation based dispersion of SiC nanoparticles in Mg melts. As compared to pure magnesium, the mechanical properties including tensile strength and yield strength of the Mg/SiC nanocomposites were improved significantly, while the good ductility of pure Mg casting was retained. The grain size of the pure magnesium was refined when SiC nanoparticles were added. In the microstructure of Mg/SiC nanocomposites, there are still quite some SiC clusters, but in the areas free of large clusters, the SiC nanoparticles were dispersed very well. TEM study of the interface between SiC nanoparticles and magnesium matrix indicates a good bonding, but no chemical reaction between SiC nanoparticles and magnesium matrix.
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Wong, W. L. E., and M. Gupta. "Development of Mg/Cu Nanocomposites Using Microwave Assisted Powder Metallurgy Technique." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79268.

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In the present study, magnesium composites containing different amount of nano-size copper particulates were successfully synthesized using powder metallurgy technique coupled with a novel microwave assisted rapid sintering. Mg/Cu nanocomposites were sintered using a hybrid heating method consisting of microwaves and radiant heat from external susceptors. The sintered specimens were hot extruded and characterized in terms of microstructural, physical and mechanical properties. Microstructural characterization revealed minimal porosity and the presence of a continuous network of nano-size Cu particulates decorating the particle boundaries of the metal matrix. Mechanical characterization revealed that the addition of nano-size Cu particulates lead to an increase in hardness, 0.2% yield strength (YS) and ultimate tensile strength (UTS) of the matrix. An attempt is made in the present study to correlate the effect of increasing presence of nano-size Cu reinforcement on the microstructural, physical and mechanical properties of monolithic magnesium.
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Goh, C. S., J. Wei, and M. Gupta. "Synthesis of Magnesium Reinforced With Nano-Size Y2O3 Using Disintegrated Melt Deposition Technique." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13243.

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Magnesium (Mg), which is the lightest structural metal known, is used in various high-end sectors due to its high specific strength and stiffness. In an attempt to further improve the mechanical properties of Mg, a judicious incorporation of reinforcements into Mg is recommended. Conventional micron-size particulate reinforced Mg composites are faced with the issues of low ultimate tensile strength and ductility due to particle cracking and particle matrix interfacial failures. To overcome these underlying problems and to look for further improvement in properties, the use of nano-size particles is investigated. Accordingly, Mg reinforced with 0.5, 1 and 2 volume percent of nanosize Y2O3 respectively were synthesized using the disintegrated melt deposition technique. Mechanical property results reveal an improvement in yield and tensile strengths of the nanocomposites relative to pure Mg. Ductility of the nanocomposites remain relatively constant even with up to 2 volume percent of Y2O3 particles added. The Mg nanocomposites synthesized exhibited excellent combination of properties that were more superior than conventional Mg-SiC composites.
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Li, Juan, Jian Liu, and Chengying Xu. "Machinability Study of SiC Nano-Particles Reinforced Magnesium Nanocomposites During Micro-Milling Processes." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34294.

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This paper experimentally investigates the machinability of Magnesium Metal Matrix Composites (Mg-MMCs) with high volume fractions of SiC nano-particles. Samples of Mg-MMCs with 5 Vol.%, 10 Vol.% and 15 Vol.% reinforcements of SiC nano-particles were studied and compared with pure Magnesium. Different feedrates and spindle speeds were chosen as varied cutting parameters. Cutting forces, surface morphology and roughness were measured to understand the machinability of the four different materials during the micro-milling process. Based on the experimental results, it is observed that the cutting force increases with the increase of the spindle speed, the feedrate and/or the volume fraction. A drastic increasing rate is observed when the nano-particles’ volume fraction is increased from 5 to 10 Vol.%. The effect of the volume fraction is also studied in frequency domain, combined with the effect of the spindle speed and feedrate. More detailed theoretical analysis will be further studied to better understand the effect of the volume fraction on the machined surface quality and machining productivity.
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Nai, M. H., C. S. Goh, S. M. L. Nai, J. Wei, and M. Gupta. "Enhancement of Mechanical Properties by Reinforcing Magnesium With Ni-Coated Carbon Nanotubes." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38576.

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In this study, carbon nanotubes (CNTs) are coated with nickel (Ni) to improve the wettability of the CNT surface and metal matrix, and allow an effective load transfer from the matrix to nanotubes. Pure magnesium is used as the matrix material and different weight percentages of Ni-coated multi-walled CNTs are incorporated as the reinforcing material. The nanocomposite materials are synthesized using the powder metallurgy route followed by microwave assisted rapid sintering. Mechanical property characterizations reveal an improvement of 0.2% yield strength, ultimate tensile strength and ductility with the addition of Ni-CNTs. As such, Ni-coated CNTs can be used as a reinforcement in magnesium to improve the formability of the material for light-weight, strength-based applications.
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Li, Xiaochun, and Zhiwei Li. "Electroplated Si3N4 Reinforced Metal Matrix Nanocomposites." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41104.

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Permalloy NiFe matrix nanocomposite layers were electroplated on a copper substrate. The volume fraction of nano-sized Si3N4 particles in NiFe matrix was controlled by the addition of various percentages of Si3N4 particles in the NiFe electrolyte. The nanocomposite layers were analyzed by a scanning electron microscopy (SEM). Microhardness test was performed. With nano-sized Si3N4 particles in the NiFe matrix, the microhardness of NiFe was improved. The samples were then annealed at 800 °C for about 20 hours. The microhardness declined more with more Si3N4 particles in the NiFe matrix. The analysis result from Energy Dispersive Spectrometer (EDS) in the SEM showed that the hardness declination could be caused by the segregation of Si3N4 in the NiFe matrix. Finally this paper presents nanocomposite micromolds fabricated by electroplating onto polymer molds that were fabricated by micro-stereolithgraphy.
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Gan, Yong X. "Modeling the Flow and Distribution of Nanoparticles in Friction Stir Processed Polymeric Composite Materials." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72049.

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Friction stir processing is an advanced manufacturing process in which a specially designed rotating pin is first inserted into the adjoining edges of the materials to be processed with a proper tool tilt angle and then move all along the adjoining edges. The pin produces frictional and plastic deformation heating in the processing zone. As the tool pin moves, materials are forced to flow around the pin. Material flows to the back of the pin, where it is extruded and forged behind the tool, consolidated and cooled under hydrostatic pressure conditions. The primary research about friction stir processing has been focused on aluminum alloys. In recent years many researchers have been trying to apply this technology for processing other alloys and materials including stainless steels, magnesium, titanium, and copper. In addition, this technology has been used to modify the microstructure of reinforced metal matrix composite materials. However, friction stir processing polymeric based materials are much less studied. Friction stir processing has the advantage of reducing distortion and defects in materials. It has potential to be used in manufacturing nanoparticle-reinforced polymeric composite materials. In this work, modeling the flow pattern and the distribution of nanoparticles in friction stir processed polymeric composite materials was performed. The internal pressure in friction stir processed composite materials was also derived, which may be used to predict the residual stress state in the nanocomposite material joint. It is found that the pressure in the joint is a function of radial position from the tool pin. The magnitude of the pressure is related to the tool geometry and the welding conditions such as tool rotating speed etc.
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Padhi, Payodhar, S. C. Panigrahi, Sudipto Ghosh, Shyamalendu M. Bose, S. N. Behera, and B. K. Roul. "A New Method for Preparation of Metal Matrix Nanocomposites." In MESOSCOPIC, NANOSCOPIC AND MACROSCOPIC MATERIALS: Proceedings of the International Workshop on Mesoscopic, Nanoscopic and Macroscopic Materials (IWMNMM-2008). AIP, 2008. http://dx.doi.org/10.1063/1.3027182.

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M, Jegatheesan, Aurabinda Swain, Soumen Kole, Prasenjit Rath, and Anirban Bhattacharya. "Melting and solidification of metal matrix nanocomposites during laser melting." In Proceedings of the 26thNational and 4th International ISHMT-ASTFE Heat and Mass Transfer Conference December 17-20, 2021, IIT Madras, Chennai-600036, Tamil Nadu, India. Connecticut: Begellhouse, 2022. http://dx.doi.org/10.1615/ihmtc-2021.760.

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Takahashi, M., E. Masamura, K. Matsuzaki, H. Takeishi, and T. Sano. "MECHANICAL PROPERTIES OF MAGNESIUM METAL MATRIX COMPOSITE REINFORCED BY SiC PARTICLES." In Processing and Fabrication of Advanced Materials VIII. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811431_0083.

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