オーステナイト系ステンレス鋼粉の固相急速焼結

概要

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Austenite type stainless steel powders (SUS304L) with rapid solid sintering were investigated by condition of heating rate 10K/s constant. The sintering was at a constant temperature of 1573K and holding time changes from 60s to 360s. The cooling methods were done by 2 different types: cool in N2 gas and furnace cool. Sintered specimens were evaluated on each mechanical property. As a result, radial crashing strength was obtained almost the same values when holding time is over 300s compared with continuous furnace sintering condition. And, influence of cooling method (cool in N2 gas or furnace cool) was not observed. Dimensional change ratio gained good values compared by liquid sintering. The values were maxima as 1.5% contraction ratios for both outside and inside direction. In this experiment, rapid solid sintering was able to be finished only for 490s.
2006-08-15