镁合金氦-氩混合气体TIG焊焊接接头组织分析  

Microstructure analysis on welded joint of magnesium alloy by He-Ar mixed gas tungsten welding

作　　者：陈永[1] 刘晓芳[1] 刘胜新[1] 汪喜和[1] 关绍康[1] 赵况[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450002

出　　处：《轻合金加工技术》2007年第9期35-36,56,共3页Light Alloy Fabrication Technology

基　　金：河南省自然科学基金项目(411052100);郑州市重大科技攻关项目(052SGBG29052)

摘　　要：在氦-氩混合气体保护条件下,对AZ31镁合金板材进行了TIG焊接,获得了表面光滑、无堆高和无变形等缺陷的焊缝。金相观察表明,和母材区相比,热影响区晶粒粗大,但焊缝区全部由均匀细小的等轴晶组成。The He-Ar mixed gas TIG welding for AZ31 magnesium alloy plate by was carried out. The surface of observed joint is smooth free from heap high and appearance defects. The microstructure in heat-affected area is coarser than that in matrix area. However, the microstructure in welded seam zone consists of fine equiaxed grains.

关 键 词：镁合金 焊接 氦-氩混合气体 组织 

分 类 号：TG407[金属学及工艺—焊接]