南京航空航天大学学报（英文版）2024，Vol.41Issue(2)：174-183,10.DOI:10.16356/j.1005⁃1120.2024.02.004
选区激光熔化镍基合金IN625数值仿真热源模型比较研究
Comparison of Heat Source Model for Numerical Modeling of Selective Laser Melting of IN625 Superalloy
摘要
Abstract
The selection of heat source model is very important to accurately predict the distribution of temperature field and melting pool geometry in the numerical modeling of additive manufacturing process.The surface model,volumetric model and double-ellipsoid model are selected for comparison and analysis.These three heat source models are progarmmed as user-defined subroutines with Abaqus/Standard simulation software to predict the peak temperature and melting pool geometry during selective laser melting(SLM)of IN625.The comparison between simulation and experimental results shows that double-ellipsoid model can predict the melting pool geometry well,while the volumetric model provides comparative peak temperature predictions.In contrast,the surface model exhibits significant deviations in both melting pool geometry and peak temperature.The findings in this research highlight the need for model calibration or modification to enhance efficiency and accuracy before further research can be conducted.关键词
热源模型/数值仿真/IN625/温度/熔池形貌Key words
heat source model/numerical modeling/IN625/temperature/melting pool geometry分类
矿业与冶金引用本文复制引用
李斌训,孙玉晶,杜劲,夏岩,苏国胜,张庆..选区激光熔化镍基合金IN625数值仿真热源模型比较研究[J].南京航空航天大学学报（英文版）,2024,41(2):174-183,10.基金项目
This work was supported by the Natu-ral Science Foundation of Shandong Province(No.ZR2021QE230),the Talent Research Project of Qilu Uni-versity of Technology(Shandong Academy of Sciences)(No.2023RCKY118),and the National Natural Science Foundation of China(Nos.52275438,52205480). （No.ZR2021QE230）
