12Cr1MoV与TP304H异种钢管的瞬态液相连接  

Transient liquid phase bonding of 12Cr1MoV to TP304H dissimilar steel tube

作　　者：王学刚[1] 张慧贞[1] 严黔[1] 李辛庚[1] 

机构地区：[1]山东电力高等专科学校特种焊接与新材料实验室,山东济南250002

出　　处：《中国电力》2007年第1期66-68,共3页Electric Power

基　　金：国家科技成果重点推广计划项目(2005EC000213)

摘　　要：采用铁基非晶中间层合金,在1220℃、3min、8MPa的工艺条件下进行了12Cr1MoV与TP304H异种钢管的瞬态液相连接,以扫描电镜(SEM)、能谱(EDX)分析了接头区组织与成分分布,并与氩弧焊接头进行了比较。结果表明,与氩弧焊接头不同,瞬态液相连接接头焊缝界面不明显,晶粒跨界面连续生长,基体元素沿焊缝区连续分布,无成分突变。瞬态液相连接接头拉伸时断在12Cr1MoV母材侧,弯曲180°未断,接头性能合格。An iron-base amorphous ribbon was employed as the interlayer alloy for transient liquid phase bonding of 12Cr1MoV to TP304H steel tube at 1 220 ℃ for 5 minutes under 8 MPa. The microstructure of joint and the elemental distribution across the joint were investigated by means of Scanning Electron Microscope （SEM） and Energy Dispersive X-ray （EDX） analysis, and compared with those of TIG joint. The results show that different from TIG joint, the transient liquid phase bond interface disappears, the grain grows across the bond and the base elements distribute and change continuously across the bond. The transient liquid phase bond fails in the 12Cr1MoV side in case of tensile test and no failure happens when the joint is bended to 180% showing a bond with qualified performance.

关 键 词：异种钢 瞬态液相连接 氩弧焊 12CR1MOV TP304H 

分 类 号：TG457[金属学及工艺—焊接]