A comparative study of the galvanized DP980 steel and 2 GPa PHS welded joint via laser beam welding and cold metal transfer welding

被引：1

作者：

Chen, Xuefei ^{[1
]}

Jin, Zhiqi ^{[1
]}

Liang, Jiawei ^{[1
]}

Wang, Yuqian ^{[1
]}

Yang, Dapeng ^{[1
]}

Yi, Hongliang ^{[1
,2
]}

Xie, Guangming ^{[1
]}

机构：

[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China

[2] Easyforming Mat Technol Co Ltd, Suzhou 215028, Peoples R China

来源：

MATERIALS LETTERS | 2024年 / 369卷

关键词：

Welding; Press hardened steel; Dual phase steel; Mechanical properties; Deformation and fracture; MECHANICAL-PROPERTIES; MICROSTRUCTURE;

D O I：

10.1016/j.matlet.2024.136726

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Galvanized DP980 steel and Al -Si coated 2 GPa press -hardened steel (PHS) were joined via laser beam welding (LBW) and cold metal transfer (CMT) welding, respectively. The weld metal (WM) of LBW joints contains martensite, acicular ferrite, and bainite. The WM of the CMT joint consists entirely of acicular ferrite. The tensile strength of the LBW joint is 895 +/- 5 MPa, slightly higher than that of the CMT joint by 50 MPa due to the presence of martensite. The total elongation is 4.1 +/- 0.2 % and 5.0 +/- 0.3 % for the LBW and CMT joints, respectively. The enhanced plasticity of the CMT joint was due to the soft WM plastic deformation, which increased the total deformation.

引用

页数：4

共 19 条

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