Download or read book Microstructural Features and Mechanical Properties of Al sub 3 Ta Matrix Composites Produced by Reactive Powder Processing written by Andrea R. Dibble and published by . This book was released on 1989 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Properties and Microstructural Features of Alumina Fiber Reinforced Ni sub3 Al Matrix Composites written by Brian V. Moore and published by . This book was released on 1988 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal Matrix Composites written by Antonio Contreras Cuevas and published by Springer. This book was released on 2018-10-27 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers several aspects of the synthesis of composites by the pressureless infiltration technique. It describes the methods used to obtain green preforms, such as cold pressed and hot sintering, describing the heating time, load, and time required for pressing the preforms. Additionally, wettability phenomena, which is directly related on infiltration, is extensively described. Wettability process and interfacial reactions are analyzed in many ceramic-metal systems prior to fabricate the composites. A complete description of fabrication processes for Metal Matrix Composites is included. An extensive section on structural, chemical, and mechanical characterization of composites fabricated with aluminum and magnesium alloys as matrices reinforced with titanium carbide (TiC), aluminum nitride (AlN), silicon carbide (SiC) and alumina (Al2O3) is included. Relevant techniques for joining composites, such as welding and brazing are addressed. As well as issues pertaining to the corrosion and wear of composites are discussed as well. Corrosion behavior of some composites exposed to aqueous media was analyzed. Corrosion of composites using TiC and SiC like reinforcement and Al, Ni, and some Al-Cux, Al-Mgx and Al-Cu-Li alloys like matrix is discussed extensively. The structural characterization techniques addressed include: scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), optical microscopy (OM), differential thermal analysis (DTA), high resolution transmission electron microscopy (HRTEM), and thermogravimetry analysis (TGA). Mechanical testing including hardness, elastic modulus, tension tests, and impact tests were used in the characterization of composites. Theoretical models for prediction of some mechanical properties are included too.
Download or read book Intermetallic Matrix Composites III Volume 350 written by J. A. Graves and published by . This book was released on 1994-09 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.
Download or read book Processing Microstructure and Mechanical Properties of Aluminum Based Metal Matrix Composites written by Liping Ren and published by . This book was released on 1998 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metal and Ceramic Matrix Composites written by Brian Cantor and published by CRC Press. This book was released on 2003-11-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from leading experts in their respective fields, Metal and Ceramic Matrix Composites provides a comprehensive overview of topics on specific materials and trends. It is a subject regularly included as a final year option in materials science courses and is also of much industrial and academic interest. The book begins wit
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 Aluminum Matrix Composites Reinforced with Alumina Nanoparticles written by Riccardo Casati and published by Springer. This book was released on 2015-12-24 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the latest efforts to develop aluminum nanocomposites with enhanced damping and mechanical properties and good workability. The nanocomposites exhibited high strength, improved damping behavior and good ductility, making them suitable for use as wires. Since the production of metal matrix nanocomposites by conventional melting processes is considered extremely problematic (because of the poor wettability of the nanoparticles), different powder metallurgy routes were investigated, including high-energy ball milling and unconventional compaction methods. Special attention was paid to the structural characterization at the micro- and nanoscale, as uniform nanoparticle dispersion in metal matrix is of prime importance. The aluminum nanocomposites displayed an ultrafine microstructure reinforced with alumina nanoparticles produced in situ or added ex situ. The physical, mechanical and functional characteristics of the materials produced were evaluated using different mechanical tests and microstructure investigation techniques. The book presents and discusses the experimental results in detail, and offers suggestions for future research directions.
Download or read book Intermetallic Matrix Composites written by Rahul Mitra and published by Elsevier. This book was released on 2017-05-25 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intermetallic Matrix Composites: Properties and Applications is a comprehensive guide that studies the types and properties of intermetallic matrix composites, including their processing techniques, characterization and the various testing methods associated with these composites. In addition, it presents modeling techniques, their strengthening mechanisms and the important area of failure and repair. Advanced /complex IMCs are then explained, such as Self-healing IMCs and laminated intermetallic composites. The book concludes by delving into the industries that use these materials, including the automotive industry. - Reviews the latest research in intermetallic matrix composites - Contains a focus on properties and applications - Includes contributions from leading experts in the field
Download or read book Mechanical Properties and Hot Workability of Al 15 B4C Metal Matrix Composites with Sc and Zr for Elevated Temperature Applications written by Jian Qin and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: À de plus hautes températures de recuit, 300 °C pour les composites contenant Sc et 350 °C pour les composites contenant Sc et Zr, avec un temps de recuit prolongé, les deux précipitations Al3Sc et Al3(Sc, Zr) deviennent grossières.
Download or read book The Processing and Mechanical Properties of High Temperature High Performance Composites Processing Property Correlations written by and published by . This book was released on 1994 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document contains the following topics: (1) A fiber fracture model for metal matrix composite monotape consolidation; (2) Effects of composite processing on the strength of sapphire fiber-reinforced composites; (3) On the flexural properties of brittle multilayer materials; (4) The microstructure of SiC/C composites and relationships with mechanical properties; (5) Microstructural observations on constrained densification of alumina powder containing a periodic array of sapphire fibers; (6) Material issues in layered forming; (7) Thermal modelling and experimental testing of Md spray shape deposition processes; (8) Liquid precursor infiltration and pyrolysis of powder compacts; (9) Influence of interparticle force on the rheological behavior of pressure-consolidated alumina particle slurries; (10) Evolution of a metastable FCC solid solution during sputter deposition of Ti-Al-B alloys; (11) Novel ODS copper alloys from rapidly-solidified precursors; (12) Mechanical properties of partially dense alumina produced from powder compacts.
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 International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Testing Technology of Metal Matrix Composites written by N. R. Adsit and published by ASTM International. This book was released on 1988 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Thermomechanical Processing on the Tensile Properties and Microstructure of a 6061 Al Al203 Metal Matrix Composite written by Michael A. Ballou and published by . This book was released on 1995 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work includes a comprehensive analysis of the effect of thermomechanical processing (TMP) history on the microstructure and properties of 10 and 20 volume percent 6061 Al-Al2O3 discontinuous metal matrix composites (MMCs). Materials in which cold drawing operations were included in the TMP demonstrated increased ductilities for a given strength level when compared to samples which were processed by hot extrusion only. Microstructural analysis provided clear evidence of the absence of damage to reinforcing particles during TMP and of load transfer to these particles during subsequent straining. Failure during tension testing resulted from the ductile tearing of the matrix as voids initiated by the cracking of reinforcement particles, joined together. A distinct microstructural difference related to processing history was the development of a strongly fibered particle distribution in materials experiencing low temperature drawing operations. In order to conduct an analysis of the mechanisms by which the particles are redistributed and reoriented during processing, a channel compression die was constructed which allowed processing to be simulated by compressive straining on a mechanical testing machine. This allowed careful control of the processing parameters. An analysis of the effects of processing temperature on particle redistribution and reorientation was conducted.
Download or read book Nanostructural Al Composites written by Michal Besterci and published by LAP Lambert Academic Publishing. This book was released on 2015-08-24 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanical alloying is the process of production of macroscopically homogeneous materials from heterogeneous mixtures. The process is implemented in laboratories in attritors, on the industrial scale in high energy ball mills. It is based on deformation, repeated disintegration and welding of powder particles during intensive dry milling. Process of severe plastic deformation was applied on composite materials in order to obtain nano-structures, and thus excellent strength and plastic properties. This monograph is focused on kinetics of mechanical alloying, quantification of microstructure parameters, evaluation of local mechanical properties, texture and microstructure stability, strength and plastic properties including superplasticity, characteristics of creep properties by "small punch" method as well as strain mechanisms by means of "in situ tensile test in SEM" of micro and nano Al-Al4C3 composites. The monograph is intended for scientists working in the field of materials engineering namely: preparation process, characteristics of microstructure and mechanical properties of composites strengthened by disperse particles.
Download or read book Characterizing the Effects of Build Interruptions on the Microstructure and Mechanical Properties of Powder Bed Fusion Processed Al Si 10Mg written by Ryan Mitchell Stokes and published by . This book was released on 2019 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work seeks to characterize the impact of build interruptions to additively manufactured Al-Si-10-Mg produced by the powder bed fusion (PBF) process. Additive manufacturing represents a significant investment in overhead, machine, and material making an interruption to the process a potential waste of money and time. Interruptions in the form of power outages, lack of powdered feedstock, and/or shielding gas will cause the machine to operate in an unintended manner, potentially even stopping the build process. The process of manufacturing will influence the microstructure, which determine the material’s properties and performance. An interrupted PBF process could exhibit unique microstructural features and reduced mechanical properties that distinguish the resulting material from a continuous PBF process. Experiments were performed to simulate a production interruption with varying time periods of interruption and air exposure. The zone of interruption was characterized using optical micrographs, EDS, and hardness measurements to determine any effects of the interruption.
