AFA 3G Gd rod is indispensability part of assembly,through the technical research of the top end plug welding of M5-alloy,Analyzing the main reason of the welding deficiency and give the solution.

• AFA3G含钆燃料棒是高燃耗组件不可缺少的部分,通过M5合金含钆燃料棒上端塞TIG焊接的工艺研究,对产生焊接缺陷(气胀)的主要原因进行分析并给出解决对策。 图4表7参1