Abstract
Pure 316L stainless steel and 5 wt% ZrB2-reinforced 316L stainless steel were prepared by selective laser melting (SLM) in this paper. As compared to 316L SS, ZrB2/316L SS displays smaller columnar grains as well as less anisotropic microstructure. EBSD results show that the SLM 316L stainless steel exhibits a maximum texture index of 13 for the brass-like texture, while the ZrB2/316L SS composite exhibits a maximum texture index of 7 for the cubic texture. The hardness of the ZrB2/316L SS composite is significantly improved, reaching 415HV, which is much higher than the hardness of 316L SS (215HV). In addition, the wear resistance of ZrB2/316L SS increases, implying broadened applications of the stainless steel composites.
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