CuCrZr/Inconel 625电子束焊接接头组织与性能  

Microstructure and mechanical properties of CuCrZr/Inconel 625 joints by electron beam welding

作　　者：王徐建 王廷[2] 何平[1] 范成磊[3] 郭迪舟[1] 董海义[1] WANG Xujian;WANG Ting;HE Ping;FAN Chenglei;GUO Dizhou;DONG Haiyi(Institute of High Energy Physics,Chinese Academy of Sciences,Beijing,100049,China;Harbin Institute of Technology(Weihai),Weihai,264209,China;State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Harbin,150001,China)

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]哈尔滨工业大学(威海),威海264209 [3]哈尔滨工业大学,先进焊接与连接国家重点实验室,哈尔滨150001

出　　处：《焊接学报》2022年第9期92-97,I0009,共7页Transactions of The China Welding Institution

基　　金：高能同步辐射光源国家重大科技基础设施项目(发改高技[2017]2173号);高能环形正负电子加速器关键技术验证(Y81614106A)。

摘　　要：对CuCrZr/Inconel 625管件进行不填丝电子束对接焊试验,观察分析各组试样的接头形貌、微观组织、化学成分以及力学性能分析.结果表明,当偏束距离为0.6和0.8 mm时,CuCrZr/Inconel 625接头焊缝成形良好,均呈现出上、下宽,中间窄的哑铃型;随着偏束距离的增大,焊缝中的Cu含量增加;CuCrZr/Inconel625管件接头焊缝中的相主要是圆球形的Ni基固溶体以及作为基体的Cu固溶体,使得焊缝具有较好的综合力学性能.当偏束距离0.8 mm时,试样最大抗拉强度达到304 MPa,断裂于CuCrZr侧热影响区.The electron beam butt welding experiments of CuCrZr and Inconel 625 tubes were carried out. The joint morphology, microstructure, chemical composition and mechanical properties of each sample were observed and analyzed. The test results show that the CuCrZr/Inconel 625 joint is in good shape when the beam offset distance is 0.6 and 0.8 mm, it presents a dumbbell shape with wide sides and narrow middle.With the increase of the beam offset distance of the CuCrZr side, the Cu content in the weld increases. The phase of CuCrZr/Inconel 625 tube joint is mainly spherical Ni-based solid solution and Cu solid solution as the matrix, which makes the weld have better comprehensive mechanical properties.When the beam offset distance is 0.8 mm, the maximum tensile strength of the sample reaches 304 MPa and breaks in the heat affected zone of CuCrZr side.

关 键 词：Inconel 625 CUCRZR 薄壁管 电子束焊接 界面组织 力学性能 

分 类 号：TG457.6[金属学及工艺—焊接]