2195铝锂合金的补焊工艺  

The investigation on repair welding technology of 2195 aluminum-lithium alloy

作　　者：李超[1] 宋永伦[1] 庞树明[1] 

机构地区：[1]北京工业大学机电学院,北京100124

出　　处：《电焊机》2013年第3期24-27,32,共5页Electric Welding Machine

基　　金：国家自然科学基金项目(51275009)

摘　　要：采用两种焊接速度(800 mm/min和180 mm/min)的TIG焊对2195铝锂合金焊缝缺陷进行修补,通过接头的力学性能、金相组织和断口形貌对补焊效果进行对比和分析。指出了补焊速度对补焊接头气孔敏感性、氧化敏感性和机械性能的影响,同时也讨论了多次补焊对焊接接头性能的危害。High strength 2195 aluminum-lithium alloy was repaired by TIG arc welding.The mechanical properties,microstructure and fractography of welded joints was observed and analyzed.The comparison and analysis of the two welding speed＇s （800 mm/min and 180 mm/min respectively） repairing effect has been made and the affect of repair welding speed to stomatal sensitivity ,oxidation- sensitive and performance of welded joints have been researched.And also discussed the affect of repeatedly repair welding to the properties of welded joints.

关 键 词：2195铝锂合金 再焊接性 三电极复合TIG 

分 类 号：TG457.11[金属学及工艺—焊接]