Abstract
Solid state recycling methods allow the production of high density aluminium alloy parts directly from aluminium scrap. Direct conversion approach of recycling of aluminium is relatively easy, less energy usage and environmental friendly. In this paper, AA6061 chips were recycled to fabricate SiC particle (2.5, 5 and 7.5 wt.%) and Al powder (10, 30 and 50 wt.%) reinforced AA6061 alloy matrix composites by the combination cold pressing techniques and sintering process. The effects of various composition of Al and SiC powder on the microstructure of the recycled AA6061/Al-SiC composites showed that the Al and SiC powders in samples were distributed non-homogeneously and randomly between the AA6061 chip regions. The density of sample AA6061/10Al powder gave the closest value to theoretical at 2.43 g/cm3 and decreases when more Al powder were added. The AA6061/10Al-7.5SiC sample showed the highest hardness at 61.0 Hv.
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