高级检索

细晶粒钢激光深熔焊接残余应力与裂纹关系分析

刘德政,李炎,王中任

刘德政,李炎,王中任. 细晶粒钢激光深熔焊接残余应力与裂纹关系分析[J]. 焊接学报, 2018, 39(11): 11-16. DOI: 10.12073/j.hjxb.2018390264
引用本文: 刘德政,李炎,王中任. 细晶粒钢激光深熔焊接残余应力与裂纹关系分析[J]. 焊接学报, 2018, 39(11): 11-16. DOI: 10.12073/j.hjxb.2018390264
LIU Dezheng, LI Yan, WANG Zhongren. Research in the relationship between the residual stress and cracks for the laser deep penetration welding of fine grained steels[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(11): 11-16. DOI: 10.12073/j.hjxb.2018390264
Citation: LIU Dezheng, LI Yan, WANG Zhongren. Research in the relationship between the residual stress and cracks for the laser deep penetration welding of fine grained steels[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(11): 11-16. DOI: 10.12073/j.hjxb.2018390264

细晶粒钢激光深熔焊接残余应力与裂纹关系分析

Research in the relationship between the residual stress and cracks for the laser deep penetration welding of fine grained steels

  • 摘要: 残余应力是导致细晶粒钢激光深熔焊时裂纹产生的主要机理之一,对焊接质量有较大影响. 文中基于细晶粒钢激光深熔焊实际焊缝金相组织建立热源模型,采用PDA-5500S岛津光谱元素分析仪提取细晶粒钢化学成分,基于吉布斯函数建立细晶粒钢的温度与流变应力耦合本构关系;同时,通过不同焊接参数下焊缝截面试验数据,在热源模型中设置跟踪点,获取焊缝中实时残余应力,研究不同温度下实时残余应力与细晶粒钢流变应力对焊接缺陷的影响. 结果表明,在相同温度下当实时残余应力高于材料流变应力时,焊缝内产生裂纹;合理提高焊接速度,可降低细晶粒钢焊缝实时残余应力,提高激光深熔焊接质量.
    Abstract: The residual stress has great influence on welding quality and it can result in the formation of the cracks in the weld during laser deep penetration welding. In this paper, the heat source model was established through the analysis for the metallographic structure of the weld of fine grained steel, and the extraction of chemical composition of fine grain steel was conducted by the PDA-5500S SHIMADZU optical emissions spectrometers. Based on Gibbs function, the coupling constitutive relation between temperature and material flow stress was established. Furthermore, the real-time residual stress was achieved by setting trace points in finite element analysis model based on the analysis of the experimental data for the cross-section of weld bead by different welding parameters. The results show that when the real-time residual stress is higher than the material flow stress at the same temperature, the cracks will occur in the weld bead.The real-time residual stress value can be decreased through the reasonable increase of welding speed, and it can improve the quality of laser deep penetration welding.
  • [1] Gao M, Zeng X, Hu Q, et al. Laser-TIG hybrid welding of ultra-fine grained steel[J]. Journal of Materials Processing Technology, 2009, 209(2): 785 ? 791.
    [2] Wei C, Zhang J, Yang S, et al. Improving formability of laser welded automotive dual phase steels with local cooling[J]. Science and Technology of Welding and Joining, 2015, 20(2): 145 ? 154.
    [3] 张正伟, 张 昭, 张洪武. 焊接残余应力对2024铝合金薄板疲劳寿命的影响[J]. 焊接学报, 2014, 35(10): 29 ? 32
    Zhang Zhengwei, Zhang Zhao, Zhang Hongwu. Influence of welding residual stresses on fatigue life of Al 2024 plate[J]. Transactions of the China Welding Institution, 2014, 35(10): 29 ? 32
    [4] 罗 怡, 许惠斌, 李春天, 等. 真空电子束焊接热源建模及功率密度分析[J]. 焊接学报, 2010, 31(9): 73 ? 76
    Luo Yi, Xu Huibin, Li Chuntian, et al. Heat source modeling and power density analysis for vacuum electron beam welding[J]. Transactions of the China Welding Institution, 2010, 31(9): 73 ? 76
    [5] 董志波, 马 瑞, 王 勇, 等. 焊接凝固裂纹数值模拟与预测系统后处理设计[J]. 焊接学报, 2011, 32(3): 17 ? 20
    Dong Zhibo, Ma Rui, Wang Yong, et al. Post-data treatment of software for three dimensional simulation and prediction of weld solidification crack[J]. Transactions of the China Welding Institution, 2011, 32(3): 17 ? 20
    [6] Feli S, Aaleagha M E, Foroutan M, et al. Finite element simulation of welding sequences effect on residual stresses in multipass butt-welded stainless steel pipes[J]. Journal of Pressure Vessel Technology-transactions of the Asme, 2012, 134(1): 897 ? 904.
    [7] Fadaei A, Mokhtari H. Finite element modeling and experimental study of residual stresses in repair butt weld of ST-37 plates[J]. Iranian Journal of Science & Technology Transactions of Mechanical Engineering, 2015, 39: 291 ? 307.
    [8] Mine Y, Haraguchi D, Ideguchi T, et al. Hydrogen embrittlement of ultrafine-grained austenitic stainless steels processed by high-pressure torsion at moderate temperature[J]. ISIJ International, 2016, 56(6): 1083 ? 1090.
    [9] Babkin A S, Chang Y L, Babkin I A. Identification welding parameters using complex criteria of quality[J]. China Welding, 2017, 26(4): 1 ? 9.
    [10] Mathias P M. The Gibbs–Helmholtz equation in chemical process technology[J]. Industrial & Engineering Chemistry Research, 2016, 55(4): 1076 ? 1087.
  • 期刊类型引用(1)

    1. 刘德政,李炎,罗静,王友. T型焊接接头弯曲疲劳寿命预测方法. 塑性工程学报. 2021(01): 172-178 . 百度学术

    其他类型引用(1)

计量
  • 文章访问数:  666
  • HTML全文浏览量:  8
  • PDF下载量:  0
  • 被引次数: 2
出版历程
  • 收稿日期:  2018-03-08

目录

    /

    返回文章
    返回