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采用Ansys有限元分析软件，对选择性激光熔化成形高熵合金CoCrFeMnNi的温度场分布进行数值模拟。在考虑随温度变化的热物理参数情况下，建立选择性激光熔化有限元模型，利用在Ansys-Workbench中插入参数化设计语言，实现高斯锥形体热源的加载，研究功率和速度对成形过程温度场的影响。模拟结果表明：在单层多道模拟时，随着SLM激光功率增大和扫描速度的下降，SLM成形HEA CoCrFeMnNi的熔池长度和宽度呈增大趋势；先扫描的区域会对未扫描的区域起预热作用且存在热积累现象，在平行于SLM激光扫描方向存在较大的温度梯度。
Abstract：In this paper, the temperature field distribution of high entropy alloy(HEA) CoCrFeMnNi fabricated by selective laser melting(SLM) is numerically simulated by Ansys finite element analysis software. Considering the thermophysical parameters varying with temperature, the finite element model of selective laser melting is developed. The loading of Gaussian cone heat source is realized by inserting parametric design language into Ansys-Workbench. The influence of power and speed on the temperature field in the forming process was studied. The simulation results show that with the increase of SLM laser power and the decrease of SLM scanning speed in single-layer and multi-channel simulation, the weld pool length and width of HEA CoCrFeMnNi fabricated by SLM are increasing.
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基本信息:
DOI：10.14128/j.cnki.al.20224202.048
中图分类号:TG665;TG139
引用信息:
[1]畅泽欣,马明锋,葛亚琼,等.选择性激光熔化成形高熵合金CoCrFeMnNi的温度场数值模拟研究[J].应用激光,2022,42(02):48-53.DOI:10.14128/j.cnki.al.20224202.048.
基金信息:
山西省回国留学人员科研资助项目(2021-139); 山西省高等学校科技创新项目(2021L307); 太原科技大学校级博士科研启动基金(20202071);太原科技大学大学生创新创业训练计划(XJ2021019)
2022-02-25
2022-02-25