Selective laser melting (SLM) is a widely applied process in the metal additive manufacturing industry. The microstructure and mechanical properties of SLM products can be significantly affected by the SLM process parameters. In the present work, optimization of SLM process parameters was performed using the Taguchi optimization method for 316L austenitic stainless steel. Laser power, scan speed, layer thickness, and hatch spacing were selected as the controllable process parameters and relative density, ultimate tensile strength, and elongation as the performance evaluation characteristics. The S/N ratio analysis determined the optimum process parameters of the SLM process in 316L stainless steel. ANOVA analysis predicted that scan speed significantly affected the relative density with a 42.38% contribution and laser power showed contributions of 31.17% and 45.67% for ultimate tensile strength and elongation, respectively. The linear regression model was developed for relative density, ultimate tensile strength, and elongation with the coefficient of determination of 90.17%, 93.06%, and 81.53%, respectively.

选择性激光熔化 (SLM) 是金属增材制造行业中广泛应用的工艺。SLM 工艺参数会显着影响 SLM 产品的微观结构和机械性能。在目前的工作中，使用田口优化方法对 316L 奥氏体不锈钢进行 SLM 工艺参数的优化。选择激光功率、扫描速度、层厚和孵化间距作为可控工艺参数，选择相对密度、极限抗拉强度和伸长率作为性能评价特征。信噪比分析确定了 316L 不锈钢 SLM 工艺的最佳工艺参数。ANOVA 分析预测扫描速度显着影响相对密度 42。38% 的贡献和激光功率对极限抗拉强度和伸长率的贡献分别为 31.17% 和 45.67%。建立了相对密度、极限抗拉强度和伸长率的线性回归模型，确定系数分别为 90.17%、93.06% 和 81.53%。