Processing And Properties Of Cast Aluminum Matrix Composites Reinforced With Discontinuous Aluminum Oxide Fibers
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Processing And Properties Of Cast Aluminum Matrix Composites Reinforced With Discontinuous Aluminum Oxide Fibers
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Author : Rudolph G. Buchheit
language : en
Publisher:
Release Date : 1987
Processing And Properties Of Cast Aluminum Matrix Composites Reinforced With Discontinuous Aluminum Oxide Fibers written by Rudolph G. Buchheit and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Aluminum composites categories.
Fabrication And Mechanical Properties Of Carbon Fiber Reinforced Aluminum Matrix Composites By Squeeze Casting
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Author : Zhiqiang Tu
language : en
Publisher:
Release Date : 2020
Fabrication And Mechanical Properties Of Carbon Fiber Reinforced Aluminum Matrix Composites By Squeeze Casting written by Zhiqiang Tu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Rapid modern technological changes and improvements bring great motivations in advanced material designs and fabrications. In this context, metal matrix composites, as an emerging material category, have undergone great developments over the past 50 years. Their primary applications, such as automotive, aerospace and military industries, require materials with increasingly strict specifications, especially high stiffness, lightweight and superior strength. For these advanced applications, carbon fiber reinforced aluminum matrix composites have proven their enormous potential where outstanding machinability, engineering reliability and economy efficiency are vital priorities. To contribute in the understanding and development of carbon fiber reinforced aluminum matrix composites, this study focuses on composite fabrication, mechanical testing and physical property modelling. The composites are fabricated by squeeze casting. Plain weave carbon fiber (AS4 Hexcel) is used as reinforcement, while aluminum alloy 6061 is used as matrix. The improvement of the squeeze casting fabrication process is focused on reducing leakage while combining thermal expansion pressure with post-processing pressing. Three different fiber volume fractions are investigated to achieve optimum mechanical properties. Piston-on-ring (POR) bend tests are used to measure the biaxial flexural stiffness and fracture strength on disc samples. The stress-strain curves and fracture surfaces reveal the effect of fiber-matrix interface bonding on composite bend behaviour. The composites achieved up to 11.6%, 248.3% and 90.1% increase in flexural modulus, strain hardening modulus and yield strength as compared with the unreinforced aluminum alloy control group, respectively. Analytical modelling and finite element modelling are used to comparatively characterise and verify the composite effective flexural modulus and strength. Specifically, they allowed iii evaluating how far the experimental results deviate from idealized assumptions of the models, which provides an insight into the composite sample quality, particularly at fiber-matrix interfaces. Overall, the models agree well with experimental results in identifying an improvement in flexural modulus up to a carbon fiber volume fraction of 4.81vol%. However, beyond a fiber content of 3.74vol%, there is risk of deterioration of mechanical properties, particularly the strength. This is because higher carbon fiber volume fractions restrict the infiltration and wetting of carbon fibre by the liquid, potentially leading to poor fiber-matrix interface bonding. It is shown that higher thermal expansion pressures and subsequent post-processing pressing can overcome this challenge at higher carbon fiber volume contents by reducing fiber-aluminum contact angle, improving infiltration, reducing defects such as porosity, and overall improving fiber-matrix bonding.
A Fundamental Study Of A New Fabrication Technique For Fiber Reinforced Aluminum Matrix Composites
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Author : R. Mehrabian
language : en
Publisher:
Release Date : 1980
A Fundamental Study Of A New Fabrication Technique For Fiber Reinforced Aluminum Matrix Composites written by R. Mehrabian and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
The feasibility of fabricating fiber-reinforced aluminum alloys by addition of discontinuous fibers to partially solid slurries and completely liquid matrices was investigated. In the first phase of the program, emphasis was placed on the study of interface interactions between polycrystalling Al2O3 fibers and Al-2 to 8%Mg, Al-4.5%Cu and Al-4.5%Cu-1 to 2%Mg alloys produced by the slurry process. In general, it was observed that the incorporation of fibers could be readily achieved by this technique, and that fibers appeared wetted after a few minutes of contact with the melt. The composites produced exhibited an intimate, void free bond between the constituents. In addition, a region of significantly altered microstructure resulted from accumulation of oxide and/or aluminate particles which either formed within the melt and were attached to the moving fibers, or used the fiber surface as a substrate to grow on. Microscopic examination of this interaction zone and thermodynamic considerations indicated that it consisted of fine alpha-Al2O3, aluminates, oxides of the alloying elements, and probably some intermetallic compounds.
Processing And Properties Of Alumina Fibre Reinforced Mullite Ceramic Matrix Composites
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Author : Cengiz Kaya
language : en
Publisher:
Release Date : 1999
Processing And Properties Of Alumina Fibre Reinforced Mullite Ceramic Matrix Composites written by Cengiz Kaya and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Microstructure And Orientation Effects On Properties Of Discontinuous Silicon Carbide Aluminum Composites
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Author : David L. McDanels
language : en
Publisher:
Release Date : 1984
Microstructure And Orientation Effects On Properties Of Discontinuous Silicon Carbide Aluminum Composites written by David L. McDanels and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Aerodynamics categories.
Asm Handbook
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Author : ASM International. Handbook Committee
language : en
Publisher: ASM International(OH)
Release Date : 2000
Asm Handbook written by ASM International. Handbook Committee and has been published by ASM International(OH) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Reference categories.
This index eliminates that need to search through multiple back-of-the-book indexes to find where a subject is addressed. The A-to-Z listing will help users find important handbook content in volumes where they may not have thought to look.
Aluminum Oxide And Titanium Diboride Reinforced Metal Matrix Composite And Its Mechanical Properties
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Author :
language : en
Publisher:
Release Date : 2004
Aluminum Oxide And Titanium Diboride Reinforced Metal Matrix Composite And Its Mechanical Properties written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
This study is on the production and testing of an aluminum metal matrix composite. Metal Matrix Composites can be produced in several different ways. In this study, an aluminum matrix composite is produced by direct addition of the reinforcement ceramic into the liquid metal. The ceramic reinforcement for this process was a mixture of TiB2 and Al2O3 which was produced by means of a thermite reaction of reactants Al, B2O3 and TiO2 all in powder form with their respective stoichiometric amounts. This ceramic mixture was ground to fine powder size and then added to liquid aluminum in small percentages. After casting and taking samples of unreinforced alloy and reinforced alloys, their tensile strength and hardness as material properties were measured and compared. Another issue is the wetting of ceramic particles by molten Aluminum. The aim of the experiments in general is to find a better way to produce a composite material with desired mechanical properties.
The Processing And Mechanical Properties Of High Temperature High Performance Composites Book 3 Constituent Properties And Macroscopic Performance Mmcs
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Author :
language : en
Publisher:
Release Date : 1993
The Processing And Mechanical Properties Of High Temperature High Performance Composites Book 3 Constituent Properties And Macroscopic Performance Mmcs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Partial Contents: Mode I Fatigue Cracking in a Fiber Reinforced Metal Matrix Composite; Fatigue Crack Growth in Fiber-Reinforced Metal-Matrix Composites; The Anisotropic Mechanical Properties of a Ti Matrix Composite Reinforced with SiC Fibers; Models for the Creep of Ceramic Matrix Composite Materials; The Creep and Fracture Resistance of Gamma-TiAl Reinforced with Al2O3 Fibers; The Mechanical Properties of Al Alloys Reinforced with Continuous Al2O3 Fibers; The Mode Fracture Resistance of Unidirectional Fiber-Reinforced Aluminum Matrix Composites; The Ultimate Tensile Strength of Metal and Ceramic-Matrix Composites; Cracking and Damage Mechanisms in Ceramic/Metal Multilayers.
Microstructure And Orientation Effects On Properties Of Discontinuous Silicon Carbide Aluminum Composites
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Author : David L. McDanels
language : en
Publisher:
Release Date : 1984
Microstructure And Orientation Effects On Properties Of Discontinuous Silicon Carbide Aluminum Composites written by David L. McDanels and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Aerodynamics categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1994
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Aeronautics categories.