Effect of shielding gas and defocusing on porosity during laser beam welding of 7A52 alloy

王磊, 许雪宗, 王克鸿, 李赫, 黄勇

lei Wang, Xuezong Xu, Kehong Wang, He Li, Yong Huang

中国焊接 . 2020, (3): 20 -25 . DOI: 10.12073/j.cw.20200430006