AZ61镁合金CO_2气体保护焊焊接接头的组织性能研究  

Research on Microstructure and Properties of CO_2 Gas Shielded Welded Joints of AZ61 Alloy

作　　者：朱智文[1] 

机构地区：[1]湖南化工职业技术学院,湖南株洲412011

出　　处：《热加工工艺》2012年第19期180-181,共2页Hot Working Technology

摘　　要：采用CO2气体保护焊焊接AZ61镁合金,利用超声波检测、拉伸试验、金相观察等方法研究了焊接接头的组织和性能。结果表明,随着焊接电流的增加,焊接接头的力学性能显著提高;采用合理的焊接工艺参数,可获得细小的等轴晶粒焊缝。AZ61 alloy was welded by CO2 gas shielded arc welding method, the microstructure and properties of the welded joint were studied by ultrasonic testing, tensile testing. The results show that, with the increase of welding current, the welding mechanical performance obviously improves. The fine equiaxed grain weld seam can be obtained by rational welding process parameters.

关 键 词：镁合金 CO2气体保护焊 力学性能 断口 

分 类 号：TG457.19[金属学及工艺—焊接] TG444.73