Ni丝与Kovar合金激光钎焊接头界面组织及元素热力学行为分析  

Analysis of Interfacial Organization and Elemental Thermodynamic Behavior of Laser Brazed Joints of Ni Wire and Kovar Alloy

作　　者：伍大为 刘永江[1] 魏海宏[1] 王长旭[1] 赵宇 赵鹏程 Wu Dawei;Liu Yongjiang;Wei Haihong;Wang Changxu;Zhao Yu;Zhao Pengcheng(Tianjin Aviation Electromechanical Co.,Ltd.,Tianjin 300308,CHN)

机构地区：[1]天津航空机电有限公司,天津300308

出　　处：《模具制造》2025年第5期175-177,共3页Die & Mould Manufacture

摘　　要：将Kovar合金与Ni丝采用振镜激光钎焊的方式实现连接,当激光功率为75%,扫描速度为(300~500)mm/s时,可以有效抑制接头中填充不饱满的缺陷。接头界面组织主要为AgZn相、Ag-Cu-Zn相、Ag-Ni相、Ni基体、Ag-Cu-Zn相、Ag(s,s)固溶体组织。根据热力学计算结果,在Ni丝/钎料界面出现了Ag-Ni相的富集,在Kovar/钎料界面生成富Cu-Zn的Ag基固溶体组织。The Kovar alloy and Ni wire were joined by galvanometer mirror laser brazing.When the laser power was 75% and the scanning speed was(300~500) mm/s,the defect of incomplete filling in the joint could be effectively suppressed.The microstructure at the joint interface was mainly composed of Ag-Zn phase,Ag-Cu-Zn phase,Ag-Ni phase,Ni matrix,Ag-Cu-Zn phase and Ag(s,s) solid solution.According to the thermodynamic calculation results,the Ag-Ni phase was enriched at the Ni wire/braze interface,and the Ag-based solid solution with rich Cu-Zn was formed at the Kovar/braze interface.

关 键 词：激光钎焊 Ni丝 Kovar合金 界面组织 

分 类 号：TG659[金属学及工艺—金属切削加工及机床] TG454