Abstract: A process of forming a multi-phase sintered article of powdered metal comprising: blending a mixture of copper powder, aluminum powder, iron powder, and nickel, each in their free states, with a lubricant, compacting the blended mixture into a die cavity, forming the article, and high temperature sintering the article in a reducing atmosphere comprised of 100% dissociated ammonia so as to produce the multi-phase sintered article of powdered metal; and the multi-phase sintered article of powdered metal formed thereby.

Abstract: In a multi-motion powder compacting press for making a useful article from powdered metal, ceramic or other particulate material, an upper assembly comprising a frame, a driven bull gear, a crankshaft having a cam and a pitman for reciprocally operating one or more upper punches into a die cavity, an improved compacting and ejection assembly depending from the frame and having a pair of inner and outer lower rams, adjustably supported by a pair of vertically spaced pressure plates, and adjustable ejection plates for upwardly ejecting a pressed article from the die cavity.