电焊机2025，Vol.55Issue(8)：90-99,10.DOI:10.7512/j.issn.1001-2303.2025.08.10
钛-钢异质材料T型接头激光焊接数值模拟研究
Numerical Simulation Study on Laser Welding of Titanium Steel Heterogeneous Material T-joint
摘要
Abstract
In order to reveal the distribution characteristics and evolution trends of residual stress in T-type laser welding joints of dissimilar materials with significant differences in performance,this paper establishes a thermo-mechanical cou-pling model of titanium-steel dissimilar material T-type joints based on the ABAQUS finite element simulation platform.By analyzing the stress curves of welding joints,the effects of welding power and welding speed on the welding temperature field,residual stress,and deformation are investigated,and the laser bias strategy is innovatively introduced to optimize the stress distribution.The results show that excessive welding speed(over 10 mm/s)will lead to insufficient molten pool tem-perature,causing defects such as incomplete penetration and incomplete fusion;when welding the two sides of the T-type joint in sequence,the residual stress at the interface between titanium alloy and the weld seam is the largest,and the residual stress increases with the increase of welding speed(up to 198.6 MPa),while the deformation decreases with the increase of speed;the effect of welding power on residual stress and deformation can be ignored.The pre-welding preheating and post-welding stress relief annealing processes proposed in this study provide a theoretical basis for suppressing cracks and defor-mation,and also provide new ideas for optimizing the laser welding process of complex joints of dissimilar materials.关键词
钛-钢异质材料/激光焊/T型接头/残余应力/有限元模拟Key words
titanium-steel dissimilar materials/laser welding/T-joint/residual stresses/finite element simulation分类
矿业与冶金引用本文复制引用
张鹤,孙鹏飞,张达,孙建波,湛兰..钛-钢异质材料T型接头激光焊接数值模拟研究[J].电焊机,2025,55(8):90-99,10.基金项目
国家级大学生创新创业训练计划项目(202410222062) （202410222062）
黑龙江省省属高等学校基本科研业务费科研项目(2023-KYYWF-0556) （2023-KYYWF-0556）
佳木斯大学青年创新人才培养支持计划项目(JMSUQP2022001) （JMSUQP2022001）
