Simulation of dendrite growth in the laser welding pool of aluminum alloy 2024 under transient conditions

被引:41
|
作者
Wang, Lei [1 ]
Wei, Yanhong [1 ]
Zhan, Xiaohong [1 ]
Yu, Fengyi [1 ]
Cao, Xiyong [1 ]
Gu, Cheng [1 ]
Ou, Wenmin [1 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211106, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Phase field; Laser welding pool; Transient conditions; Dendrite growth; Aluminum alloy; GRAIN-GROWTH; SOLIDIFICATION; MICROSTRUCTURE; MODEL;
D O I
10.1016/j.jmatprotec.2017.03.005
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A macroscopic heat transfer and fluid flow model is developed to calculate the temperature and velocity fields in the laser welding pool of aluminum alloy 2024. The equations of temperature gradient and solidification rate are developed to consider the transient conditions during the laser welding process. The dendrite growth and solute concentration along the fusion boundary are predicted via the phase-field model under the transient conditions. The comparison of the simulation results with the measurements is carried out. Fusion profiles obtained by using a rotary-Gauss body heat source model are consistent with measurements. The computed dendrite morphology and primary dendrite arm spacing give a good agreement with experimental findings. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:22 / 29
页数:8
相关论文
共 50 条
  • [1] Phase field investigation of dendrite growth in the welding pool of aluminum alloy 2A14 under transient conditions
    Zheng, W. J.
    Dong, Z. B.
    Wei, Y. H.
    Song, K. J.
    Guo, J. L.
    Wang, Y.
    COMPUTATIONAL MATERIALS SCIENCE, 2014, 82 : 525 - 530
  • [2] Onset of the initial instability during the solidification of welding pool of aluminum alloy under transient conditions
    Zheng, Wenjian
    Dong, Zhibo
    Wei, Yanhong
    Song, Kuijing
    JOURNAL OF CRYSTAL GROWTH, 2014, 402 : 203 - 209
  • [3] Macro-micro modeling and simulation on columnar grains growth in the laser welding pool of aluminum alloy
    Wang, Lei
    Wei, Yanhong
    Chen, Jicheng
    Zhao, Wenyong
    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2018, 123 : 826 - 838
  • [4] Numerical simulation of dendrite growth of aluminum alloy
    Xu, QY
    Feng, WM
    Liu, BC
    Xiong, SM
    ACTA METALLURGICA SINICA, 2002, 38 (08) : 799 - 803
  • [5] Autogenous laser keyhole welding of aluminum alloy 2024
    Hu, B
    Richardson, IM
    JOURNAL OF LASER APPLICATIONS, 2005, 17 (02) : 70 - 80
  • [6] Phase-field simulation of dendrite growth under forced flow conditions in an Al-Cu welding molten pool
    Wang, Lei
    Wei, Yanhong
    Yu, Fengyi
    Zhang, Qi
    Peng, Qingyu
    CRYSTAL RESEARCH AND TECHNOLOGY, 2016, 51 (10) : 602 - 609
  • [7] Fibre Laser Welding of 2024 Aluminum Alloy with Filling Wire
    Xu Fei
    Gong Shuili
    Chen Li
    Yang Jing
    Guo Luyun
    RARE METAL MATERIALS AND ENGINEERING, 2013, 42 : 201 - 204
  • [8] Prediction of solidification cracking in pulsed laser welding of 2024 aluminum alloy
    Sheikhi, M.
    Ghaini, F. Malek
    Assadi, H.
    ACTA MATERIALIA, 2015, 82 : 491 - 502
  • [9] A phase field investigation of dendrite morphology and solute distributions under transient conditions in an Al-Cu welding molten pool
    Wang, L.
    Wei, Y.
    Zhan, X.
    Yu, F.
    SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2016, 21 (06) : 446 - 451
  • [10] Effect of alloy element on weld pool dynamics in laser welding of aluminum alloys
    Miyagi, Masanori
    Wang, Hongze
    Yoshida, Ryohei
    Kawahito, Yousuke
    Kawakami, Hiroshi
    Shoubu, Takahisa
    SCIENTIFIC REPORTS, 2018, 8