钼铼合金焊接技术研究现状  

Present situation of study on welding of Mo-Re alloys

作　　者：吴磊[1] 夏春智[1] 刘鹏[2] 

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003 [2]山东建筑大学材料科学与工程学院,济南250101

出　　处：《焊接》2017年第2期13-16,共4页Welding & Joining

基　　金：国家自然科学基金资助项目(51405205);中国博士后科学基金面上资助项目(2015M581751)

摘　　要：钼铼合金是一种极具发展前景的材料,但钼铼合金对C,N,O敏感,呈现出高温易氧化的特点,焊接接头易形成气孔,生成脆性化合物,造成性能下降。因此,国内外学者对其焊接性进行了研究。综述钼铼合金的电子束焊、激光焊、电阻焊、摩擦焊和真空钎焊等在国内外的研究现状。对焊接中出现的问题进行分析与总结,并指出防止生成脆性相、气孔和裂纹是钼铼合金获得良好焊接接头的关键。Mo-Re alloys are one of promising materials for the future application. But Mo-Re alloys are sensitive to carbon,nitrogen and oxygen elements,which are easily oxidized. Pores and brittle compounds formed in joints cause serious drops in properties. Therefore,many scholars researched on the weldability of Mo-Re alloys. The research status of electron beam welding,laser welding,resistance spot welding,vacuum brazing and friction stir welding of Mo-Re alloys at home and abroad were summarized. The common problems in welding were analyzed and summarized,and reduction in brittle compounds,pores and cracks is the key to obtain good joints.

关 键 词：钼铼合金 焊接 性能 

分 类 号：TG441[金属学及工艺—焊接]