PROCESSING OF AN ALUMINUM-6061 METAL MATRIX COMPOSITE BY EQUAL-CHANNEL ANGULAR PRESSING

摘要

An Al-6061 metal matrix composite, reinforced with 10 vol.% Al_2O_3 particulates, was subjected to equal-channel angular pressing (ECAP). The grain size of the composite was reduced by a factor of approximately 2x through ECAP processing. The mechanical properties of the material were investigated using tensile testing at high temperatures over a range of strain rates. This paper describes and discusses the mechanical properties of the composite after ECAP and presents representative microstructures obtained using transmission electron microscopy.