钛对钴铬合金丝/不锈钢丝激光接头组织与性能的影响  

Effect of Ti on Microstructure and Properties of Co-Cr Alloy Wire and Stainless Steel Wire Laser Welding Joint

作　　者：王毅[1] 马凯[2] WANG Yi;MA Kai(School of Mechatronics Engineering, Changchun Institute of Technology, Changchun 130012, China;Jilin Communica- tions Polytechnic, Changchun 130012, China)

机构地区：[1]长春工程学院机电学院,吉林长春130012 [2]吉林交通职业技术学院,吉林长春130012

出　　处：《热加工工艺》2018年第9期188-190,共3页Hot Working Technology

基　　金：吉林省科技厅项目(20140101050JC)

摘　　要：使用激光焊接以纯钛中间层连接钴铬合金丝和不锈钢丝异质材料。通过对比分析了加钛中间层与未加钛层的激光焊接头的组织与力学性能。结果表明：与未加钛的接头相比,加钛接头的焊缝组织形态得到一定改善,熔合性更好。Ti与Co、Cr、Ni形成化合物,在焊缝区发生化学反应实现冶金结合,从而获得可靠连接。当钛中间层厚度为40μm时,接头弯曲角度约为90°,断口呈塑性断裂特征。The Co-Cr alloy wire and stainless steel wire were joined by using laser welding with pure Ti interlayer. The microstructure and mechanical properties of laser welded joints with Ti interlayer and without Ti interlayer were compared and analyzed. The results show that the microstructure of the joint with Ti interlayer is improved and the fusion is better compared with that without Ti interlayer. Ti forms compounds with Co, Cr and Ni, and chemical reaction occurs in the weld zone to achieve metallurgical bonding and reliable connection is obtained. When the thickness of Ti interlayer is 40 μm, the bending angle of the joint is about 90°, and the fracture shows plastic fracture characteristic.

关 键 词：钴铬合金 奥氏体不锈钢 钛中间层 激光焊 

分 类 号：TG456.7[金属学及工艺—焊接]