Microstructural development in an aluminum alloy-SiC whisker composite
作者： T. Christman , S. Suresh
DOI: 10.1016/0001-6160(88)90236-2
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摘要: Abstract Microstructural development in a powder metallurgy 2124 aluminum alloy-SiC whisker composite subject to controlled and systematic aging treatments was investigated using analytical transmission electron microscopy, quantitative analysis of precipitate growth, matrix microhardness measurements studies changes electrical conductivity. In order build basis for comparison, the precipitation characteristics unreinforced material with an identical processing history were also examined. The results indicate that has much greater density dislocations than control alloy. increased dislocation facilitates nucleation strengthening precipitates whereby incubation time achieve peak hardness are significantly reduced as compared material. Theoretical analyses generation due thermal expansion mismatch punching at ends examined context microstructural metal-matrix composite. An attempt is made address issues essential thorough characterization develop framework fundamental understanding evolution discontinuous fiber-reinforced composites.
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