18Ni钢环焊缝TIG焊接和电子束焊接收缩变形对比研究  

Comparative study on shrinkage deformation of 18Ni steel girth weld by TIG welding and electron beam welding

作　　者：余海松 余闪闪 吴东[1] 李婷 魏宾华 魏正英[3] YU Hai-song;YU Shan-shan;WU Dong(China Airborne Missile Academy,Luoyang 471009;College of Mechanical and Electrical Engineering,Yunnan Agricultural University,Kunming 650201)

机构地区：[1]中国空空导弹研究院,洛阳471009 [2]云南农业大学机电工程学院,昆明650201 [3]西安交通大学机械工程学院,西安710049

出　　处：《航空精密制造技术》2024年第1期21-23,31,共4页Aviation Precision Manufacturing Technology

基　　金：国家自然科学基金资助项目(52275376)。

摘　　要：本文采用TIG焊接和电子束焊接方法,对18Ni高强钢的圆筒对接环缝进行焊接。对比研究了18Ni钢环焊缝,不同焊接方法焊接后的收缩变形量和接头力学性能。并通过金相观察,研究了TIG和电子束焊接接头的微观组织。拉伸试验后发现,电子束焊接接头的抗拉强度明显高于TIG焊接接头的抗拉强度。TIG(inert gas tungsten)welding and electron beam welding were used to weld the circular joint of 18Ni high-strength steel cylinder.The shrinkage deformation and mechanical property of 18Ni steel circular joints by different welding methods were studied.The microstructure of TIG and electron beam welded joint was studied by metallographic observation.The tensile tests showed that the tensile strength of electron beam welded joint was higher than that of TIG welded joint.

关 键 词：18Ni高强钢 电子束焊接 TIG焊接 焊接变形 力学性能 

分 类 号：TG444.2[金属学及工艺—焊接]