Performance and Corrosion Behavior of Laser-CWW Arc Hybrid Welding Process

YANG Zhidong; XU Kai; HE Peng; CHEN Yuntao; WANG Xianglong; XU Guoxiang; ZHANG Yongshun

doi:10.3969/j.issn.1674-6457.2026.03.014

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Journal of Netshape Forming Engineering ›› 2026, Vol. 18 ›› Issue (3) : 125-133. DOI: 10.3969/j.issn.1674-6457.2026.03.014

Advanced Joining Technology

Performance and Corrosion Behavior of Laser-CWW Arc Hybrid Welding Process

YANG Zhidong^1,2,3, XU Kai², HE Peng^3,*, CHEN Yuntao¹, WANG Xianglong¹, XU Guoxiang¹, ZHANG Yongshun¹

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Abstract

The work aims to employ laser-cable type welding wire (CWW) on A36 medium thick plates to examine how the welding process influences the joint structure, properties, and corrosion behavior. Firstly, a butt welding experiment was conducted by laser and CWW arc hybrid welding. Secondly, the morphology, mechanical properties, and microstructure of the welded joint were compared and analyzed. Finally, an electrochemical corrosion test was conducted on the welded joint. The laser-CWW GMAW arc hybrid welding seam had good formation, and the tensile fracture position of the welded joint was broken at the base metal. The average tensile strength of the welding seam was 516 MPa, and the joint hardness was less than 350HV, which met the standard requirements. The microstructure of the weld zone and heat affected zone of the welded joint is composed of ferrite, granular bainite, and martensite. The corrosion resistance of laser-CWW GMAW arc composite welded joints was better than that of laser arc hybrid welding, and the self-corrosion potential of the base material was lower than that of the welding seam. As the mass fraction of NaCl increased, the self-corrosion potential shifted towards the negative direction, the self-corrosion current density increased, and the arc radius of the welding seam capacitance was larger than that of the base metal and decreased with the increase of mass fraction. The microstructure, properties, and corrosion behavior of the welded joint in hybrid welding with laser and cable-type welding wire arc are consistent with those in hybrid welding with laser and single-wire arc. This method can provide a theoretical basis for the application of medium and thick plates.

Key words

laser-arc hybrid welding / cable-type welding wire / weld microstructure / mechanical property / electrochemical corrosion

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YANG Zhidong, XU Kai, HE Peng, CHEN Yuntao, WANG Xianglong, XU Guoxiang, ZHANG Yongshun. Performance and Corrosion Behavior of Laser-CWW Arc Hybrid Welding Process[J]. Journal of Netshape Forming Engineering. 2026, 18(3): 125-133 https://doi.org/10.3969/j.issn.1674-6457.2026.03.014

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