Key parameters for low temperature warm compaction of high density iron-based P/M materials

Abstract

In order to reduce powder temperature to lower than 100 °C in warm compaction by changing polymer lubricant design, powder flowability, warm compacting behavior, lubricating mode as well as ultimate tensile strength after sinter-hardening and tempering were investigated systematically. By means of low temperature warm pressing and sintered hardening technique, samples with the sintered densities of 7.40 – 7.45 g/cm³ and the strengths of 950 –1 390 MPa are achieved as the early compacting pressure is 686 – 735 MPa.

Keywords

iron-based P/M materials / low temperature warm compaction / lubricating mode

References

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