应用激光, 2017, 37 (3): 386, 网络出版: 2017-08-30   

基于温度场的高强钢激光焊接HAZ晶粒长大研究

Study on Growth of HAZ Grain in Laser Welding of High Strength Steel Based on Temperature Field
作者单位
1 中国航发南方公司, 湖南 株洲 412002
2 湖南大学机械与运载工程学院, 湖南 长沙 410082
摘要
为了研究高强钢激光焊接线能量对HAZ奥氏体晶粒长大的影响, 运用ANSYS有限元软件模拟了激光焊接时的三维瞬态温度场, 结合热循环曲线和HAZ奥氏体晶粒长大的特征, 确定了高强钢激光焊接HAZ奥氏体晶粒长大的动力学方程参数, 并分析了不同线能量对HAZ奥氏体晶粒长大的影响, 其理论计算结果与试验结果相吻合。结果表明, 激光焊接高强钢时, HAZ奥氏体晶粒长大现象明显。激光焊接线能量对HAZ奥氏体晶粒长大有直接影响, 在一定范围内, 随着焊接线能量的增加, HAZ奥氏体晶粒长大越显著, 主要是随着焊接线能量加大, 焊接热输入量增加, HAZ峰值温度及晶粒粗化温度区间持续时间长的作用。
Abstract
In order to study the effect of high strength steel laser welding line energy on the growth of HAZ austenite grain, the three-dimensional transient temperature field of laser welding was simulated by ANSYS finite element software, combined with the thermal cycling curve and the growth characteristic of HAZ austenitic grain, the kinetic equation parameters of HAZ austenite grain growth of high strength steel in laser welding were determined, and the effects of different line energy on the growth of HAZ austenite grain were analyzed, the theoretical calculation results are in good agreement with the experimental results. The results show that the phenomenon of HAZ austenitic grain growth is obvious when laser welding high strength steel. The energy of laser welding line has a direct effect on the growth of HAZ austenitic grain. In a certain range, with the increase of welding line energy, the austenitic grain growth is more significant, mainly due to the increase of welding line energy, the increase in welding heat input, HAZ peak temperature and grain coarsening temperature range duration is long.

宋威, 曹轼毓, 鄢锉. 基于温度场的高强钢激光焊接HAZ晶粒长大研究[J]. 应用激光, 2017, 37(3): 386. Song Wei, Cao Shiyu, Yan Cuo. Study on Growth of HAZ Grain in Laser Welding of High Strength Steel Based on Temperature Field[J]. APPLIED LASER, 2017, 37(3): 386.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!