|
1. A method of manufacturing a high strength part which comprises (1) providing an external component having an external profile and an internal profile, wherein the external component is comprised of a forged powder metal or a wrought metal; (2) compacting a powder metal composition within the internal profile of the external component to produce a green internal component, wherein the powder metal composition consists of iron, copper, molybdenum, optionally nickel, optionally chromium, optionally carbon, optionally sulfur, optionally phosphorus, optionally silicon, optionally magnesium, optionally aluminum, optionally titanium, optionally vanadium, optionally manganese, optionally calcium, optionally cobalt, optionally graphite, and optionally a lubricant; and (3) sintering the green internal component within the confines of the external component to produce high strength part, wherein the internal component is comprised of a powder metal which expands to a greater degree than does the forged powder metal or the wrought metal during sintering, and wherein the internal profile of the external component includes grooves, and wherein the groves facilitate bonding between the internal component and the external component.
|
