MATERIAL PROPERTIES OF HEAT TREATED DOUBLE PRESSED/SINTERED P/M STEELS IN COMPARISON TO WARM COMPACTED/SINTER HARDENED MATERIALS

摘要

Warm Compaction of Densmix~(TM) powders provides means to produce P/M parts with densities in the range of 7.1 to 7.4 g/cm~3. As most properties are improved by increased density, the warm compaction method offers possibilities to increase the competitiveness of P/M compared to other manufacturing techniques. In this paper a comparison of material properties obtained by two different manufacturing routes is presented. Heat treated properties of some P/M steels after double pressing/sintering are compared with properties obtained with sinterhardening of warm compacted Densmix~(TM) powders.