CEMENTED CARBIDE - METALLIC ALLOY COMPOSITES

摘要

A method of making a composite sintered powder metal article includes providing a first powder comprising hard particles and a powdered binder in a first region of a mold. Providing a second powder comprising a metal or metal alloy powder in a second region of the mold, wherein the second powder contacts the first powder and comprises at least one of a metal powder and a metallic alloy powder. The first powder and the second powder are consolidated in the mold to provide a green compact. The green compact is sintered to provide a composite sintered powder metal article comprising a cemented hard particle region formed from the first powder and metallurgically bonded to a metallic second region formed from the second powder.