金属加工（热加工）Issue(4)：142-150,9.
316L板材与选区激光熔化成形材料的组织和性能对比
Comparison of microstructure and properties between 316L plate and materials formed by selective laser melting
摘要
Abstract
The micro structure and its influence on mechanical properties of casting and rolling 316L stainless steel plate and 316L stainless steel formed by selective laser melting(SLM)were studied.The differences in microstructure morphology,tensile properties at room temperature and high temperature were compared and analyzed under different processes.The test results show that the equiaxed grain structure can be seen in the stainless steel plate specimens by optical microscope(OM).In contrast,there are fish-scale molten pool morphologies in the SLM printed specimens,a large number of cell and fibrous subcrystalline structures can be observed after magnification.By electron backscatter diffraction(EBSD)analysis,a large number of equiaxed crystal structures and low angle grain boundaries can be seen in the stainless steel plate specimens.In contrast,the grain shapes of SLM printed specimens are mostly columnar crystal structures,and there are more high angle grain boundaries.In terms of tensile properties,the tensile properties of SLM-printed specimens at room temperature and high temperature are better than those of 316L stainless steel plate specimens.In terms of hardness,the hardness performance of SLM printed sample is higher than that of stainless steel plate sample.关键词
选区激光熔化/316L不锈钢/微观组织/力学性能Key words
selective laser melting/3161 stainless steel/microstructure/mechanical properties引用本文复制引用
郝维勋,史丹,赵中赫,车鹏程,段龙汉..316L板材与选区激光熔化成形材料的组织和性能对比[J].金属加工（热加工）,2025,(4):142-150,9.基金项目
黑龙江省自然科学基金项目(LH2022E079). （LH2022E079）
