Abstract
Ferrous Powder Metallurgy (P/M) has advanced significantly over the past thirty years in providing opportunity for a parts designer and producer to make high strength net shape parts. Currently, for example, transmission gears in U.S. built cars use P/M parts. This review addresses recent advances in the area of ferrous powder for the P/M industry. Development of molybdenum prealloyed powder for increased density, Cr-Mn containing powder for through hardenability and improved wear resistance, binder treated powders for higher control of alloying ingredients and increasing compaction rates are presented. Two major innovations, namely achievement of higher compaction densities through warm compaction and improved magnetic properties by dielectric coating on iron powders are presented.
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