Influence of SiC particles on compressive strength of sintered aluminium alloy
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Room temperature compressive tests have been carried out on metal matrix composites (MMCs) based on an Al alloy (CW67 alloy). The particulate reinforcements used were SiC in three volume fractions (5%, 10%, and 15%) with an average size of 15 mum. Two matrix aging conditions were studied: peak aged and equivalent underaged conditions. The presence and increasing volume fraction of SiC particles increases elastic modulus and yield stress but decreases ultimate compressive strength and ductility of the W67 alloy characterised under compression in both peak aged and underaged conditions. Higher compressive strength and lower ductility have been achieved in the matrix submitted to peak aging in comparison to the matrix that underwent underaging.
Извор:Powder Metallurgy, 2003, 46, 1, 21-24
ISSN: 0032-5899 (print)