Cryomilled aluminum alloy and boron carbide nano-composite plate

摘要

The addition of ceramic particulate reinforcement via cryomilling can significantly increase the physical and mechanical properties of Al alloys. In the present study, boron carbide (B{sub}4C) was cryomilled with Al 5083 to form a nano-grained metal matrix powder. This powder was blended with unmilled Al 5083 to increase ductility and was then consolidated into plates by three methods: (1) hot isostatic pressing (HIPping) followed by high strain rate forging (HSRF), (2) HIPping followed by two-step quasi-isostatic forging (QIF), and (3) three-step QIF. The effects of process method on microstructure and mechanical behavior for the final consolidated nano-composite plates were investigated.