2014 and 6061 aluminium alloy-based powder metallurgy composites containing silicon carbide particles/fibres

The present investigation covers the processing and mechanical properties of 2014 and 6061 Al alloy-based power metallurgy composites containing up to 8 vol% of SiC in either particle or continuous fibre form. For consolidation of the green compacts, liquid phase sintering under vaccum at 635°C was adopted. The addition of reinforcement imparted improved densification such that particulate composites were better densified than the fibrous ones. Relatively higher work hardening rates were observed in fibrous composites than in the particulate ones. The ductility values of obtained porous particulate composites were similar to those of the fully dense ones reported in the literature.