Friction and wear characteristics of 630 stainless steel fabricated by selelctive laser melting under oil lubrication

Abstract

Many researches about mechanical properties of objects fabricated by selective laser melting (SLM) have been done. However, there have been very few reports about tribological properties. Then, friction and wear characteristics of 630 stainless steel fabricated by SLM under oil lubrication were investigated in this research. Wear of the specimen with higher porosity increased enormously. It is supposed that metallic particles generated from the voids along with repeatedly stress concentration promoted abrasive wear of the specimen surface. On the other hand, wear resistance of the densest specimen which is properly heat treated is compatible with the conventional material.