Comparison of wear behavior of GCr15 bearing steel prepared by selective laser melting (SLM) and electron beam melting (EBM)

Both the microstructure and wear behavior of GCr15 bearing steel prepared by selective laser melting (SLM) and electron beam melting (EBM), respectively, are compared for the first time in this study. The results show that the microstructure of SLMed-GCr15 bearing steel is composed of residual austenite and fine martensite and EBMed-GCr15 bearing steel is mainly globular pearlite, the globular cementite precipitated in the ferrite surface is...