激光重熔等离子弧喷涂ZrO_2-8%Y_2O_3涂层温度场数值模拟  

Numerical simulation of temperature field of laser remelting ZrO_2-8% Y_2O_3 coating prepared by plasma spraying

作　　者：黄连杰[1] 孙登月[1] 陈鹏[1] 谢久明[2] 

机构地区：[1]燕山大学机械工程学院国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [2]天津百利机械装备集团有限公司中央研究院,天津300350

出　　处：《焊接技术》2016年第2期24-27,6,共4页Welding Technology

基　　金：河北省自然科学基金资助项目(E20122030080)

摘　　要：依据激光重熔工艺的特点,引入了材料换热系数、相变潜热和热物性参数等因素,利用ANSYS仿真优化软件的APDL语言建立了H13模具钢表面激光重熔等离子弧喷涂Zr O2-8%Y2O3涂层三维连续移动温度场的有限元模型。在不同的激光器功率条件下,利用该模型对激光重熔过程中试件温度场进行了分析计算,并预测了熔池的深度和宽度,为激光重熔试验中搭接率的选择提供了依据。模拟结果能较好地拟合试验结果,证明建立的温度场仿真模型是可靠正确的,能为制备高性能的Zr O2-8%Y2O3涂层优化工艺参数提供依据。According to the characters of laser remelting, a travel heat source combined with the surface loads was designed in consideration of the thermal physical parameters of material, latent heat, radiation and convection etc. A computing model of transient temperature field of three-dimension moving laser remelting ZrO_2-8% Y_2O_3 coating prepared by plasma spraying on H13 hot die steel was built up with the employment of ANSYS parametric design language. The temperature field of laser remelting had been calculated and analyzed by the model under different power, the pool′s profile and the shape of heat affected zone had been forecasted. The simulation results revealed a good agreement with the experimental results, which indicated the established numerical model was reliable and correct, and the simulation model could be used to optimize parameters of the processing.

关 键 词：激光重熔 等离子弧喷涂 ZrO2-8%Y2O3涂层 ANSYS有限元温度场 数据模拟 

分 类 号：TG456.7[金属学及工艺—焊接] TG174.442