분말사출성형된 17-4 PH STS 소결체의 밀도에 따른 인장 특성

Abstract

It is well known that the powder injection molding (PIM) process can overcome the shape limitations of traditional powder compaction, the costs of machining, the productivity limits of isostatic pressing and slip casting, and the defect and tolerance limitations of conventional casting. Increasing demands from industry for not only the dimensional accuracy but mechanical strength in PIMed parts have had much effort focused on the investigation of mechanical properties of sintered parts formed with high-strength metallic powders. The 17-4 PH stainless steel powders, one of the best corrosion-resistant high-strength materials, with average diameter of 10μm were injection-molded into flat tensile specimens. Sintering of the compacts was carried out at the various temperatures ranging from 900 to 1350℃. Sintering behavior of the compacts and tensile properties of sintered specimens were investigated.