Download or read book Microstructure property Relationships in 2124 Al Alloy and Al SiC Particulate Metal Matrix Composite written by Martin Paul Thomas and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Microstructure Processing Property Relationships in an Al Matrix Composite System Reinforced by Al Cu Fe Alloy Particles written by and published by . This book was released on 2004 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal matrix composites (MMC), especially Al matrix composites, received a lot of attention during many years of research because of their promise for the development of automotive and aerospace materials with improved properties and performance, such as lighter weight and better structural properties, improved thermal conductivity and wear resistance. In order to make the MMC materials more viable in various applications, current research efforts on the MMCs should continue to focus on two important aspects, including improving the properties of MMCs and finding more economical techniques to produce MMCs. Solid state vacuum sintering was studied in tap densified Al powder and in hot quasi-isostatically forged samples composed of commercial inert gas atomized or high purity Al powder, generated by a gas atomization reaction synthesis (GARS) technique. The GARS process results in spherical Al powder with a far thinner surface oxide. The overall results indicated the enhanced ability of GARS-processed Al and Al alloy powders for solid state sintering, which may lead to simplification of current Al powder consolidation processing methods. Elemental Al-based composites reinforced with spherical Al-Cu-Fe alloy powders were produced by quasi-isostatic forging and vacuum hot pressing (VHP) consolidation methods. Microstructures and tensile properties of AYAl-Cu-Fe composites were characterized. It was proved that spherical Al-Cu-Fe alloy powders can serve as an effective reinforcement particulate for elemental Al-based composites, because of their high hardness and a preferred type of matrix/reinforcement interfacial bonding, with reduced strain concentration around the particles. Ultimate tensile strength and yield strength of the composites were increased over the corresponding Al matrix values, far beyond typical observations. This remarkable strengthening was achieved without precipitation hardening and without severe strain hardening during consolidation because of the matrix choice (elemental Al) and the ''low shear'' consolidation methods utilized. This reinforcement effectiveness is further evidenced by elastic modulus measurements of the composites that are very close to the upper bound predictions of the rule of mixtures. The load partitioning measurements by neutron diffraction showed that composite samples made from GARS powders present significantly higher load transfer efficiency than the composites made from commercially atomized powders. Also, the composite samples made from GARS powders show a higher strengthening effect and ductility than the samples made from commercial purity powders. The higher load transfer efficiency and higher strength and ductility may result from an enhanced inter-particle bonding strength, promoted by the ''clean'' interfaces between particles. Further analysis of the load sharing measurements and the calculated values of the mismatch of coefficient of thermal expansion (CTE) and the geometrically necessary dislocation (GND) effects suggest that these strengthening mechanisms can be combined to predict accurately the strength of the composites.

Download or read book The Microstructure processing property Relationships in an Al Matrix Composite System Reinforced by Al Cu Fe Alloy Particles written by Fei Tang and published by . This book was released on 2004 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid state vacuum sintering was studied in tap densified Al powder and in hot quasi-isostatically forged samples composed of commercial inert gas atomized or high purity Al powder, generated by a gas atomization reaction synthesis (GARS) technique. The GARS process results in spherical Al powder with a far thinner surface oxide. The overall results indicated the enhanced ability of GARS-processed Al and Al alloy powders for solid state sintering, which may lead to simplification of current Al powder consolidation processing methods. Elemental Al-based composites reinforced with spherical Al-Cu-Fe alloy powders were produced by quasi-isostatic forging and vacuum hot pressing (VHP) consolidation methods. It was proven that spherical Al-Cu-Fe alloy powders can serve as an effective reinforcement particulate for elemental Al-based composites, because of their high hardness and a preferred type of matrix/reinforcement interfacial bonding, with reduced strain concentration around the particles. Ultimate tensile strength and yield strength of the composites were increased over the corresponding Al matrix values, far beyond typical observations. This remarkable strengthening was achieved without precipitation hardening and without severe strain hardening during consolidation because of the matrix choice (elemental Al) and the "low shear" consolidation methods utilized. This reinforcement effectiveness is further evidenced by elastic modulus measurements of the composites that are very close to the upper bound predictions of the rule of mixtures. The load partitioning measurements by neutron diffraction showed that composite samples made from GARS powders present significantly higher load transfer efficiency than the composites made from commercially atomized powders. Further analysis of the load sharing measurements and the calculated values of the mismatch of coefficient of thermal expansion (CTE) and the geometrically necessary dislocation (GND) effects suggest that these strengthening mechanisms can be combined to predict accurately the strength of the composites. By neutron diffraction measurements, it also was found that the composites consolidated from Al and Al63Cu25Fe12 quasicrystal alloy reinforcement powders have compressive residual stress in the Al matrix, contrary to the tensile residual stress in typical Al/SiC composites. The composites made by the quasi-isostatic forging process exhibited higher tensile strengths and much higher compressive residual stresses than the composites made by the VHP process.

Download or read book The Influence of Microstructure on the Tensile Behavior of an Aluminum Metal Matrix Composite written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-06 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relationship between tensile properties and microstructure of a powder metallurgy aluminum alloy, 2009 was examined. The alloy was investigated both unreinforced and reinforced with 15 v/o SiC whiskers or 15 v/o SiC particulate to form a discontinuous metal matrix composite (MMC). The materials were investigated in the as-fabricated condition and in three different hot-rolled sheet thicknesses of 6.35, 3.18, and 1.8 mm. Image analysis was used to characterize the morphology of the reinforcements and their distributions within the matrix alloy. Fractographic examinations revealed that failure was associated with the presence of microstructural inhomogeneities which were related to both the matrix alloy and to the reinforcement. The results from these observations together with the matrix tensile data were used to predict the strengths and moduli of the MMC's using relatively simple models. The whisker MMC could be modeled as a short fiber composite and an attempt was made to model the particulate MMC as a dispersion/dislocation hardened alloy. Birt, Michael J. and Johnson, W. Steven Langley Research Center RTOP 506-43-71-03

Download or read book Aerospace Materials Handbook written by Sam Zhang and published by CRC Press. This book was released on 2016-04-19 with total page 763 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whether an airplane or a space shuttle, a flying machine requires advanced materials to provide a strong, lightweight body and a powerful engine that functions at high temperature. The Aerospace Materials Handbook examines these materials, covering traditional superalloys as well as more recently developed light alloys. Capturing state-of-the-art d

Download or read book Proceedings written by Murray L. Scott and published by Woodhead Publishing. This book was released on 1997 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metal Matrix Composites A Modern Approach to Manufacturing written by Virat Khanna, Prianka Sharma, Santosh Kumar and published by Bentham Science Publishers. This book was released on 2024-03-28 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of metal matrix composite manufacturing, including fabrication methods, characterization techniques, and manufacturing applications. 10 chapters cover fundamental and applied topics on matrix metal composites. The book is a resource for all readers seeking to gain an in-depth understanding of metal matrix composites with its relevance to the modern industry. Key Features - Includes fully referenced contributions by experts in materials science - Provides an introduction to the subject, and a future prospective for a broad range of readers - Reviews current knowledge on fabrication techniques and structure property relationships of metal matrix composites - Includes dedicated chapters for reinforced composites (carbon fiber, carbon nanotubes, aluminium) - Includes guidance on material wear and tear and - Provides an investigation for process optimization for EDM for newly developed composites It is designed to be an essential resource for students and professionals in the field of materials science and engineering, as well as researchers and engineers working on metal matrix composite in manufacturing industries.

Download or read book Composites Industry Abstracts written by and published by . This book was released on 1996 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Silicon Carbide Particulate Reinforced Aluminum Alloys Matrix Composites Fabricated by Squeeze Casting Method written by Adem Onat and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Matrix Composites (MMCs) are now attracting enormous interest, because of their superiority in strength, stiffness, wear resistance, elevated temperature strength or other engineering properties. Parallel to commercialisation, there are research centres throughout the world that are actively researching further development and exploitation of net or near net shape fabrication process. In this book, the production and characterisation of SiC particles reinforced Al alloy matrix composites produced by squeeze casting are investigated. The effects of volume fraction of SiC on microstructure, mechanical properties are examined as well. Also the results of the production of gravity cast matrix alloy, to determine the effect of pressure on microstructure and properties are described in this book.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microstructure And Properties Of Materials Vol 2 written by James C M Li and published by World Scientific Publishing Company. This book was released on 2000-10-09 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second volume of an advanced textbook on microstructure and properties of materials. (The first volume is on aluminum alloys, nickel-based superalloys, metal matrix composites, polymer matrix composites, ceramics matrix composites, inorganic glasses, superconducting materials and magnetic materials). It covers titanium alloys, titanium aluminides, iron aluminides, iron and steels, iron-based bulk amorphous alloys and nanocrystalline materials.There are many elementary materials science textbooks, but one can find very few advanced texts suitable for graduate school courses. The contributors to this volume are experts in the subject, and hence, together with the first volume, it is a good text for graduate microstructure courses. It is a rich source of design ideas and applications, and will provide a good understanding of how microstructure affects the properties of materials.Chapter 1, on titanium alloys, covers production, thermomechanical processing, microstructure, mechanical properties and applications. Chapter 2, on titanium aluminides, discusses phase stability, bulk and defect properties, deformation mechanisms of single phase materials and polysynthetically twinned crystals, and interfacial structures and energies between phases of different compositions. Chapter 3, on iron aluminides, reviews the physical and mechanical metallurgy of Fe3Al and FeAl, the two important structural intermetallics. Chapter 4, on iron and steels, presents methodology, microstructure at various levels, strength, ductility and strengthening, toughness and toughening, environmental cracking and design against fracture for many different kinds of steels. Chapter 5, on bulk amorphous alloys, covers the critical cooling rate and the effect of composition on glass formation and the accompanying mechanical and magnetic properties of the glasses. Chapter 6, on nanocrystalline materials, describes the preparation from vapor, liquid and solid states, microstructure including grain boundaries and their junctions, stability with respect to grain growth, particulate consolidation while maintaining the nanoscale microstructure, physical, chemical, mechanical, electric, magnetic and optical properties and applications in cutting tools, superplasticity, coatings, transformers, magnetic recordings, catalysis and hydrogen storage.

Download or read book Thermal and Mechanical Behavior of Metal Matrix and Ceramic Matrix Composites written by John M. Kennedy and published by ASTM International. This book was released on 1990 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of interest to researchers and practitioners in materials science, especially in the aerospace industry, 16 papers from a symposium in Atlanta, Georgia, November 1988 discuss the analysis, modeling, and behavior of both continuous and discontinuous ceramic and metal matrix composites, and methods of

Download or read book Processing and Mechanical Properties of Al alloy SiC Particulate Metal Matrix Composites written by Panos A. Karnezis and published by . This book was released on 1995 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Processing Structure Property Relationships in Metals written by Alessandra Varone and published by MDPI. This book was released on 2019-11-04 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the industrial manufacturing of metals, the achievement of products featuring desired characteristics always requires the control of process parameters in order to obtain a suitable microstructure. The strict relationship among process parameters, microstructure, and mechanical properties is a matter of interest in different areas, such as foundry, plastic forming, sintering, welding, etc., and regards both well-established and innovative processes. Nowadays, circular economy and sustainable technological development are dominant paradigms and impose an optimized use of resources, a lower energetic impact of industrial processes and new tasks for materials and products. In this frame, this Special Issue covers a broad range of research works and contains research and review papers.

Download or read book Microstructural Damage and Mechanical Properties of a Metal Matrix Composite Al particulate SiC and an Intermetallic titanium Aluminide Under Various Deformation Regimes written by Peter Christopher Gardiner and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metals Abstracts written by and published by . This book was released on 1997 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by Murray L. Scott and published by Woodhead Publishing. This book was released on 1997 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: