金属加工（热加工）Issue(5)：83-89,7.
双相钢激光拼焊接头力学性能预测及模拟
Mechanical properties prediction and simulation of laser welded joint of dual-phase steel
摘要
Abstract
In order to obtain the mechanical properties of DP980 dual-phase laser welded joint,samples containing different sections of welded joints were prepared and combined with"the mixing rule"to obtain the mechanical properties of each area of the joint,and finite element simulation verification was carried out to analyze the deformation and failure of the longitudinal joint.The results show that the load-displacement simulation curves of the sample joints in different zones are consistent with the experimental curves.The load-displacement simulation of the longitudinal joint is close to the experimental curve,and the simulated fracture location is consistent with the actual fracture location.The failure mode of the longitudinal joint extends from the center of the weld zone to both sides to the base metal zone.The macroscopic fracture morphology of the joint shows equiaxed dimples distributed in the weld zone,the softened zone and the base metal zone.The joint as a whole presents a ductile fracture mode.关键词
力学性能/混合法则/纵向接头/塑性断裂/失效Key words
mechanical properties/mixing rule/longitudinal joint/ductile fracture/failure引用本文复制引用
郭建超,张雪,朱梦岩,钟星河,周世超,李修明,王承辉..双相钢激光拼焊接头力学性能预测及模拟[J].金属加工（热加工）,2026,(5):83-89,7.基金项目
广西科技重大专项(桂科AA23023011) （桂科AA23023011）
南宁市"邕江计划"青年人才专项(RC20250103) （RC20250103）
广西机电职业技术学院2024年度科研项目"软化区对高强双相钢激光拼焊接头变形与失效行为研究"(2024YKYZ009) （2024YKYZ009）
广西机电职业技术学院2024年度专业群科教融汇专项"基于视-声-光-电多信息融合焊缝缺陷识别方法研究"(2024KJRHK004). （2024KJRHK004）
