低成本钛合金激光-电弧复合焊接仿真分析  

Simulation and Analysis of Laser-arc Composite Welding of Low-cost Titanium Alloy

作　　者：刘政 高金良[1] 冯和永[1] 万鹏 宋旭杰 胡锦川 LIU Zheng;GAO Jinliang;FENG Heyong;WAN Peng;SONG Xujie;HU Jinchuan(Beijing North Vehicle Group Co.,Ltd.,Beijing 100072,China;The Eighth Military Office in Beijing Area,Bureau of Military Representatives of Beijing Area of Army Equipment Department,Beijing 100072,China)

机构地区：[1]北京北方车辆集团有限公司,北京100072 [2]陆军装备部驻北京地区军事代表局驻北京地区第八军代室,北京100072

出　　处：《新技术新工艺》2023年第3期28-31,共4页New Technology & New Process

摘　　要：以10 mm的TC4LCA钛合金板为母材,建立TC4LCA板材有限元焊接接头模型,应用Marc软件对热源进行校核,校核结果吻合度较好,并对温度场和应力场进行模拟计算,结果表明焊缝底部位置存在较大残余应力,是焊接缺陷敏感区域;焊后试件中间位置横截面横向残余应力呈现上表面与下表面两端受压、中间受拉的状态,板厚方向残余应力数值较小。Took 10 mm TC4LCA titanium alloy plate as the base material,the finite element welding joint model of TC4LCA plate was established.Marc software was used to check the heat source,and the check results were in good agreement.The temperature field and the stress field were simulated and calculated.The results showed that the bottom of welding line was the welding defect sensitive area because of the bigger residual stress.After welding,the transverse residual stress in the middle section of the specimen presented a state of compression at both ends of the upper and lower surfaces and tension in the middle,and the residual stress in the thickness direction was small.

关 键 词：低成本钛合金 激光-MIG复合焊 温度场 应力场 残余应力 数值模拟 

分 类 号：TG442[金属学及工艺—焊接]