金属加工（热加工）Issue(8)：37-40,4.
DP780双相钢电阻缝焊接头组织及力学性能研究
Research on the microstructure and mechanical properties of resistance seam welding joint of DP780 dual phase steel
摘要
Abstract
The resistance seam welding(RSW)test of DP780 dual phase steel was carried out without preheating.The microstructure and mechanical properties of the welded joint were investigated by SEM,cupping tests and mechanical properties tests.The results show that the microstructure of the weld zone mainly consists of granular martensite.The microstructure of heat affected zone is mainly ferrite and martensite.DP780 dual phase steel resistance seam welding joint has good mechanical properties.The hardness of the weld zone is higher than that of base material and the heat affected zone of the joint.The tensile tests show the joint fractures at the base material,indicating that the joint strength exceeds that of the base material.However,the cupping test reveals an insufficient plastic reserve in the joint.关键词
双相钢/电阻缝焊/微观组织/性能Key words
dual phase steel/resistance seam welding/microstructure/properties引用本文复制引用
曾凡,贾立健..DP780双相钢电阻缝焊接头组织及力学性能研究[J].金属加工（热加工）,2025,(8):37-40,4.基金项目
安徽省教育厅高校科学研究项目(2022AH0S0322). （2022AH0S0322）
