高黏结相硬质合金与因瓦合金焊接组织性能  

Study on Microstructure and Property of Cemented Carbide and Invar Alloy Weldment

作　　者：徐培全[1] 马春伟[1] 金玲玮[1] 黄晨[1] 何建萍[1] 

机构地区：[1]上海工程技术大学材料科学与工程学院,上海201620

出　　处：《上海交通大学学报》2008年第S1期146-148,共3页Journal of Shanghai Jiaotong University

基　　金：上海市优秀青年资助项目(06xpyq17);上海市晨光计划资助项目(2008cg62);上海市科委项目资助项目(061111034);上海市教委重点资助项目(06zz79)

摘　　要：为了提高硬质合金与因瓦合金的焊接性能,开发了一种新型因瓦合金的焊接工艺,利用钨极氩弧焊接方法获得因瓦合金在无填充及不开坡口条件下的焊接接头,利用光镜、扫描电子显微镜观察焊接接头界面的组织形貌,并分析了焊接接头的硬度分布.结果表明:利用开发的焊接工艺,能够实现因瓦合金焊接接头的冶金结合;焊接接头硬度为16.3~72.6HRC,且过渡平滑.In order to improve the weldability of cemented carbide and invar alloy,one novel invar alloy was developed.The microstructure,morphology,composition and phase of invar alloy were investigated.The welded joint of cemented carbide and invar alloy using tungsten inert gas welding method was obtained under the condition of without filler materials and with no groove.The microstructure and mophology distribution of welded joint were analyzed by using optical method and SEM.Finally,the hardness distribution was ...

关 键 词：硬质合金 因瓦合金 焊接工艺 显微组织 硬度分布 

分 类 号：TG457.1[金属学及工艺—焊接]