Mo-3Nb单晶定向焊接技术研究  

Research on Orientational Welding of Mo-3Nb Single Crystal

作　　者：李鑫[1] 姜玮[1] 陈圣杰[1] 

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《稀有金属材料与工程》2015年第1期189-193,共5页Rare Metal Materials and Engineering

摘　　要：采用X射线劳厄照相法对单晶接头进行定向装配,开展了Mo-3Nb单晶的定向焊接实验。结果显示,定向焊接可以消除单晶焊缝中的大角晶界,显著改善焊缝的微观组织;虽然在试样焊缝中心仍然存在着少量的亚结构,但是这些亚结构并不会对焊缝性能产生较大影响。X-ray Laue photographic process was adopted to directionally assemble single crystal joints, and the orientational welding experiment of Mo-3Nb single crystal was carried out. The results indicate that the orientational welding can eliminate the high-angle boundaries within the single crystal weld and significantly improve the microstructure of weld. Although there is still a little substructure in the center of weld, the substructure cannot bring an impact to the properties of the weld.

关 键 词：单晶 电子束焊接 单晶定向 大角晶界 

分 类 号：TG44[金属学及工艺—焊接]