CAJ | 학술논문

进行了DP800MPa级双相钢的点焊性能研究.对国产和瑞典双相钢的点焊接头进行金相分析、显微硬度测试、剪切试验以及扫描断口分析,结果表明,双相钢点焊接头的断裂方式以韧性断裂为主;在同等焊接工艺下,国产钢板点焊接头的剪切强度高于瑞典钢板点焊接头.国产钢板点焊接头的显微硬度略低于瑞典钢板.
진행료DP800MPa급쌍상강적점한성능연구.대국산화서전쌍상강적점한접두진행금상분석、현미경도측시、전절시험이급소묘단구분석,결과표명,쌍상강점한접두적단렬방식이인성단렬위주;재동등한접공예하,국산강판점한접두적전절강도고우서전강판점한접두.국산강판점한접두적현미경도략저우서전강판.
The properties of resistance spot welding application for DP800MPa-level dual-phase steel were researched. The spot welding performance of dual-phase steel produced in domestic and swedish was studied by metallographic analysis, microhardness, shear tests and scanning fracture analysis. The results show that the dual-phase steel welding joint fracture modes are mainly ductile fractures. Under the same welding process, the shear strength of domestic spot welding joint is higher than swedish, but the microhardness of the domestic is slightly lower than the swedish plates.