Study of weld formation characteristics in laser-arc hybrid welding
Study of weld formation characteristics in laser-arc hybrid welding
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激光-电弧复合焊焊缝成形特性研究
DOI：
10.1142/s0217979222400446
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发表时间：
2022
影响因子：
1.7
通讯作者：
Mingxiao Shi
中科院分区：
文献类型：
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作者：
Hongwei Sun;Zhidong Yang;Chenfu Fang;Yuntao Chen;Yongshun Zhang;Mingxiao Shi
采用激光-电弧复合焊接工艺对船用钢进行了焊接试验，研究了主要工艺参数对焊缝性能的影响。结果表明，随着激光功率的增加，焊缝熔深逐渐增大。当激光与焊丝距离为2 mm时，焊缝成形、熔深和补强均达到上级水平;随着焊接电流的增加，焊缝熔宽、熔深和补强均增大，而随着焊接速度的增加，焊缝熔宽、熔深和补强均减小。通过对焊缝和热影响区的微观组织观察，分析了激光功率对焊缝成形组织的影响。随着激光功率的增加，热影响区的显微组织粗化，这与热影响区的硬度分布趋势一致。
The laser-arc hybrid welding was carried out on the marine-use steel, and the effects of primary parameters on weld behavior were investigated. The results show that the weld penetration increased gradually with the increase of laser power. Meanwhile, superior weld formation, penetration and reinforcement were achieved when laser and wire distance was 2 mm. The weld width, penetration and reinforcement were increased with the increase of current, while they were decreased with the increase of welding speed. The influence of laser power on the generated microstructure was analyzed by the observation in junction of weld and heat affected zone (HAZ). The microstructure of HAZ coarsened with the increase of laser power, which is consistent with the hardness distribution trend in HAZ.