40 mm不锈钢电子束焊接接头组织与性能研究  

Study on Microstructure and Mechanical Property of Electron Beam Welding Joint of 40 mm-thickness Stainless Steel

作　　者：王喆[1] 王大勇[1] 文仲波 余勇[1] 温银江[1] 余萍[1] 朱猛[1] WANG Zhe;WANG Dayong;WEN Zhongbo;YU Yong;WEN Yinjiang;YU Ping;ZHU Meng(Dongfang Turbine Co.,Ltd.,Deyang Sichuan,618000)

机构地区：[1]东方汽轮机有限公司,四川德阳618000

出　　处：《东方汽轮机》2020年第1期22-27,共6页Dongfang Turbine

摘　　要：对40 mm厚316L类不锈钢进行电子束焊接试验,得到了单面焊双面成型的近似平行焊缝。测试该接头的化学成分、显微组织和力学性能,结果显示焊缝金属几无烧损,化学成分仍满足母材要求。焊缝组织为柱状晶、细小枝晶和等轴晶组成的铸态组织,晶粒明显细化,焊接接头力学性能优良。The electron beam welding experiments of 40 mm-thickness 316 L stainless steel are carried out, and the parallel weld with one-side welding with back formation is obtained. The chemical composition, microstructure and mechanical propery of the joint are tested. The results show that the weld metal almost has no burning loss and the chemical composition still meets the requirements of the base material. The weld microstructure is composed of columnar crystal, fine dendrite and equiaxed grain, and the grain is refined. The mechanical properties of the welded joint are excellent.

关 键 词：不锈钢 电子束焊接 单面焊双面成型 显微组织 力学性能 

分 类 号：TG456[金属学及工艺—焊接]