Fang Jimi, Qian Xusheng, Ci Yanke, Li Cong, Zhang Xiaoyong, Wang Kehong
School of Digital Technology and Engineering, Ningbo University of Finance and Economics, Ningbo 315175, China.
School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Materials (Basel). 2024 Sep 7;17(17):4415. doi: 10.3390/ma17174415.
Welding experiments were conducted under different currents for single-pass butt welding of high-strength steel flat plates. The microstructure of welded joints was characterized using OM, SEM, and EBSD, and the welding process was numerically simulated using a finite element method. According to the grain size obtained by electron microscope characterization and the temperature data obtained by simulation, the microstructure and mechanical properties of coarse grain and fine grain areas of the heat-affected zone were predicted by using the material microstructure and property simulation software. Finally, the results of mechanical properties simulation were verified through mechanical property testing.
对高强度钢平板进行单道对接焊，在不同电流下进行了焊接实验。采用光学显微镜（OM）、扫描电子显微镜（SEM）和电子背散射衍射（EBSD）对焊接接头的微观结构进行了表征，并采用有限元方法对焊接过程进行了数值模拟。根据电子显微镜表征得到的晶粒尺寸和模拟得到的温度数据，利用材料微观结构和性能模拟软件预测了热影响区粗晶区和细晶区的微观结构和力学性能。最后，通过力学性能测试对力学性能模拟结果进行了验证。
