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The effect of secondary thermomechanical processing parameters on the ambient temperature behavior of 10% volume 6061 Al-alumina metal matrix composite

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Author
Eastwood, David F., Jr.
Date
1992-03
Advisor
McNelley, Terry R.
Kalu, Peter N.
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Abstract
Thermomechanical processing (TMP) was conducted on a 10 volume percent, 6061 Al-Al(2)O(3) particle reinforced 'metal-matrix composite' (MMC) The TMP employed consisted of isothermal rolling with intermediate annealing using a schedule of reduction with constant strain per pass for most of the schedule. The as-processed material exhibited high strength while simultaneously achieving ductility comparable to that of the unreinforced 6061 matrix alloy. In the fully annealed condition, the composite's strength and ductility were essentially equal to those of the unreinforced aluminum. An aging study showed accelerated aging and greater peak strength for the composite. Finally, a process and heat treatment combination was established in an attempt to optimize simultaneously the strength and ductility of the composite. It was found that the composite could be aged to a peak strength of 340 MPA while retaining a ductility of 14 percent elongation to failure.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/23650
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    Thermomechanical processing and ambient temperature properties of a 6061 aluminum 10 volume percent alumina metal matrix composite 

    Schaefer, Thomas A. (Monterey, California. Naval Postgraduate School, 1990-03);
    Thermomechanical processing was conducted on a cast aluminum-based metal matrix composite. The material studied was 6061 aluminum containing 10 volume percent of alumina (Al2O3) particles, fabricated by casting and ...
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    An investigation of the effects of secondary processing on the fracture properties of a SiCp-6XXX Al composite 

    Quiles, Frank N. (Monterey, California. Naval Postgraduate School, 1996-06);
    Discontinuous reinforced aluminum (DRA) composites are attractive as structural materials because of their desirable stiffness and strength to weight ratios and relative ease of manufacture. However, they typically display ...
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    Effect of post-fabrication processing on the tensile properties of centrifugally cast silicon carbide particulate reinforced aluminum composites 

    Muller, Kurt Alwin. (Monterey, California. Naval Postgraduate School, 1993-09);
    A centrifugally cast A356 aluminum-matrix composite reinforced with silicon carbide (SiC) particles was thermo-mechanically processed by rolling and the resulting properties were studied. Tensile testing, hardness testing ...
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