16mm厚纯钼真空电子束焊接焊缝成形特征  

Vacuum Electron Beam Welding Trait of 16mm Molybdenum

作　　者：郑卫胜[1] 刘金合[1] 马正斌[1] 

机构地区：[1]西北工业大学材料学院,陕西西安710072

出　　处：《热加工工艺》2012年第7期153-154,157,共3页Hot Working Technology

摘　　要：采用真空电子束焊接方法对纯钼材料进行焊接,对焊缝成形特征进行分析。通过光学显微镜对焊缝微观组织进行分析,同时对不同焊接工艺参数下各个熔池形貌的比较,讨论了焊接速度、焊接电流对焊缝成形规律的影响。结果表明,采用真空电子束焊接的纯钼焊缝晶粒长大现象严重;焊接速度和焊接电流是影响焊缝熔深、深宽比的重要因素。Pure molybdenum material was welded by means of vacuum electron beam welding, and the weld trait was analyzed too. Through analyzing the microstmcture of welded joint with optical microscope, and comparing the each molten pool patterns under different welding parameters, the effect on weld trait of welding speed and welding current was discussed. The results indicate that the weld grains get very large with vacuum electron beam welding; welding speed and welding current are key factors to affect the weld penetration and depth-to-width ratio.

关 键 词：纯钼 真空电子束焊接 微观组织 成形特征 

分 类 号：TG456.3[金属学及工艺—焊接]