铸造2025，Vol.74Issue(7)：924-931,8.
基于响应面法的GH3536合金激光粉末床熔融技术工艺参数优化
Optimization of Laser Powder Bed Fusion Process Parameters for GH3536 Alloy Based on Response Surface Methodology
摘要
Abstract
The present study focused on GH3536 alloy,employing the response surface central composite design method to optimize the process parameters of laser powder bed fusion(LPBF)and establish a functional relationship between the additive manufacturing process parameters and the porosity of the alloy.The results indicated that the scanning rate had a more significant effect on the porosity of GH3536 alloy than other parameters.Through response surface optimization experiments,the optimal parameter combination for LPBF of GH3536 alloy was determined to be a laser power of 210 W,a scanning rate of 1 000 mm/s,and a hatch overlap rate of 40％.Under these conditions,the porosity of GH3536 alloy was measured at 0.026％,which was in good agreement with the predicted value,thereby validating the accuracy of the response surface optimization approach.The mechanical properties of the alloy under these optimized parameters were evaluated,revealing a tensile strength of 844 MPa,a yield strength of 640 MPa,and a fracture elongation of 29.5％.The excellent tensile properties of the alloy can be attributed to the synergistic effects of low porosity and fine-grained microstructure.关键词
激光粉末床熔融/GH3536合金/响应面法/拉伸性能/孔隙率Key words
laser powder bed fusion process/GH3536 alloy/response surface methodology/tensile properties/porosity分类
矿业与冶金引用本文复制引用
赵翔宇,周林,陈瑞志,吴迪,梁静静,刘丽荣,周亦胄,李金国..基于响应面法的GH3536合金激光粉末床熔融技术工艺参数优化[J].铸造,2025,74(7):924-931,8.基金项目
国家重点研发计划项目(No.2023YFB4603301). （No.2023YFB4603301）
