Microstructure and Mechanical Properties of Selective Laser Melting 0Cr18Ni9 Stainless Steel

The 0Cr18Ni9 samples were prepared by laser selective melting technique, and the effects of different power and scanning speed on the microstructure evolution were observed. Through the observation of the microstructure and the analysis of the densification test results, the optimum process parameter was 280W, 960mm/s. The tensile strength (678MPa) and yield strength (554MPa) of the transverse tensile specimens formed under this condition are higher than that of the longitudinal specimens. However, the longitudinal specimen is more plastic than the transverse specimen. (paper)