Mechanical properties of laser welding and arc welding of Hastelloy C-276 with filler wire

YANG Lifeng; YU Jingling; CHENG Bo; MA Guangyi; WU Dongjiang

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Mechanical properties of laser welding and arc welding of Hastelloy C-276 with filler wire
Vol. 48, Issue 2, Pages: 95-99(2018)
Published：2018
DOI：
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DOI：

YANG Lifeng, YU Jingling, CHENG Bo, et al. Mechanical properties of laser welding and arc welding of Hastelloy C-276 with filler wire[J]. Eletric Welding Machine2018, 48(2): 95-99. DOI：

摘要

为了评价不同焊接工艺对核主泵屏蔽套焊接成形质量的影响

对比分析屏蔽套材料氩弧焊接接头和激光焊接接头的力学性能

通过渗透检测、射线检测等方法确认焊接接头是否存在焊接缺陷

同时评价焊接接头拉伸性能和弯曲性能。结果表明:在保证焊接接头形貌良好、余高较小的条件下

激光焊接与氩弧焊接均可获得无缺陷的焊缝表面

但射线检测底片结果显示激光焊接获得的焊缝宽度更窄

焊缝更均匀;两种焊接方式的焊接接头抗拉性能均优于母材

弯曲实验均未发现开裂现象

说明两种焊接方式获得的焊接接头力学性能基本一致。

Abstract

The thin nickel based sheet used in stator and rotor cans of a nuclear main pump is welded by laser and arc. In order to evaluate the effect of different welding technology on the welding quality of cans

the mechanical properties of laser welded joint and argon arc welded joint of can materials are compared and analyzed. Radiographic testing and penetrant testing are used to confirm whether defects exist in welded joints. And tensile experiment and bending experiment of flawless welded joints are carried out. The results show that when ensuring welded joints have good appearance and minimum reinforcement

perfect weld surface can be obtained by both laser welding and arc welding. But radiographic testing shows that the welds obtained by laser welding are evener and the weld with is narrower. The tensile properties of welded joints obtained by laser welding and arc welding are both better than that of base metal. The tensile property of laser welded joints is equivalent to that of arc welded joint. There are no cracks detected in the welded joints after bending experiment.