焊后热处理对2091铝锂合金接头组织的影响  

Effects of Post-weld Heat Treatment on the Microstructure of Al-Li Alloy 2091 Welded Joint

作　　者：王小玉[1] 张修智[2] 刘爱国[2] 张栩梅 

机构地区：[1]哈尔滨工业大学焊接教研室 [2]哈尔滨工业大学金属材料及工艺系

出　　处：《哈尔滨工业大学学报》1993年第5期87-91,共5页Journal of Harbin Institute of Technology

摘　　要：本文通过金相显微分析、透射电镜观察及硬度测试,研究了2091铝锂合金焊后固溶时效处理对焊接接头显微组织的影响.结果表明,2091铝锂合金焊接接头中强化相析出数量少是接头弱化的根本原因;采用焊后固溶时效处理,可以改善合金接头组织,获得均匀分布的弥散强化相。The effects of solid solution and ageing on the microstructure of Al-Li Alloy 2091 welded joint is studied by metallographic micro-analysis,TEM imageing and hardness test.The result shows that,it is the basic reason why the joint weakened thatfew strengthening phases appear in the joint of Alloy 2091,and with solid solutionand ageing,the microstructure of the joint can be improved,and dispersed strength-ening phases are available in the joint.

关 键 词：铝锂合金 组织 接头 焊后处理 

分 类 号：TG441.8[金属学及工艺—焊接]