Microstructure and properties of AA7075/Al–SiC composites fabricated using powder metallurgy and hot pressing

Solid state recycling of AA7075 chips by hot pressing is a novel processing technique that uses remarkably lower energies compared to conventional recycling by casting. In this study, AA7075 chips were recycled to fabricate SiC particle (2.5, 5 and 10 wt.%) and Al powder (10, 20, 30 and 50 wt.%) reinforced AA7075 alloy matrix composites by the combination of powder metallurgy and hot pressing techniques. The effects of the amounts of SiC...