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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。
The X-ray Laue photographic method was used to orient the single crystal joints. The directional welding experiment of Mo-3Nb single crystal was carried out. The results show that directional welding can eliminate the large-angle grain boundaries in the single-crystal weld and improve the microstructure of the weld significantly. Although there are still a few substructures in the weld center, these substructures do not affect the weld Performance has a greater impact.