TA2工业纯钛激光焊接的数值模拟分析  

Numerical Simulation Analysis of TA2 Industrial Pure Titanium Laser Welding

作　　者：季齐宝 王文焱[1,2] 张帅锋 吕逸帆 谢敬佩 王爱琴[1,2] 柳培 Ji Qibao;Wang Wenyan;Zhang Shuaifeng;LüYifan;Xie Jingpei;Wang Aiqin;Liu Pei(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,Henan,China;Provincial and Ministerial CoConstruction of Collaborative Innovation Center for NonFerrous Metal New Materials and Advanced Processing Technology,Luoyang 471023,Henan,China;Luoyang Ship Material Research Institute,Luoyang 471023,Henan,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]有色金属新材料加工与先进加工技术省部共建协同创新中心,河南洛阳471023 [3]中国船舶集团有限公司第七二五研究所(洛阳船舶材料研究所),河南洛阳471023

出　　处：《激光与光电子学进展》2022年第17期274-281,共8页Laser & Optoelectronics Progress

基　　金：郑洛新国家自主创新示范区创新引领型产业集群专项(201200211400)。

摘　　要：为优化TA2工业纯钛的激光焊接工艺,以ABAQUS软件为平台,采用有限元分析法建立了非线性瞬态热力耦合模型。分析厚度为6 mm的TA2工业纯钛激光焊接过程的热应力场。考虑了材料热物理性能参量的温度依存性,利用FORTRAN编程实现了移动高斯面热源和圆锥体热源复合的加载。通过实验验证了复合热源的可靠性,并对比分析了不同工艺参数下熔池内不同位置的最高温度及不同温度区间内的冷却速度。结果表明,激光功率和焊接速度对熔池的最高温度和不同温度区间的冷却速度均有较大影响,且熔池受焊接速度的影响更大。In order to optimize the laser welding process of industrially pure titanium TA2,a nonlinear transient thermal coupling model is established by finite element analysis method on the platform of ABAQUS software in this paper.The thermal stress field during laser welding of TA2 industrial pure titanium with a thickness of 6 mm is analyzed.Considering the temperature dependence of the material thermophysical property parameters,and the combined loading of the moving Gaussian surface heat source and the cone heat source is realized by FORTRAN programming.The reliability of the composite heat source is verified by experiments,and the maximum temperature at different positions in the molten pool and the cooling rates in different temperature ranges under different process parameters are compared and analyzed.The results show that both the laser power and the welding speed have a great influence on the maximum temperature of the molten pool and the cooling rate in different temperature ranges,and the molten pool is more affected by the welding speed.

关 键 词：激光光学 激光焊接 工业纯钛 数值模拟 工艺参数 温度场 

分 类 号：TG456.[金属学及工艺—焊接]