Effect of Cryogenic Heat Treatment and Heat Treatment on the Influence of Mechanical, Energy, and Wear Properties of 316L Stainless Steel by Selective Laser Melting

摘要

Abstract The effects of different heat and cryogenic treatments on the mechanical and tribological properties of 316L stainless steel formed by selective laser melting were investigated. The mechanical properties of samples processed by heat treatment, cryogenic treatment, and a combination of heat and cryogenic treatment were compared. It was found that the samples treated by (600°C?×?3 h) + (?196°C?×?24 h) exhibited better mechanical properties and the best strength and plasticity, with a tensile strength of 585 MPa and elongation of 68.5%. The experimental results of friction and wear showed that the sample treated by (600°C?×?3 h) + (?196°C?×?24 h) exhibited a low friction coefficient of about 0.7 and a wear amount of 2.8?×?10?3 mm3, indicating that the material has strong wear resistance.