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Volume 24 Issue 1
Jan.  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(1): 102-108
Hong-tao Liu, Ji-xue Zhou, Dong-qing Zhao, Yun-teng Liu, Jian-hua Wu, Yuan-sheng Yang, Bai-chang Ma, and Hai-hua Zhuang, Characteristics of AZ31 Mg alloy joint using automatic TIG welding, Int. J. Miner. Metall. Mater., 24(2017), No. 1, pp. 102-108. https://doi.org/10.1007/s12613-017-1383-8
Cite this article as:
Hong-tao Liu, Ji-xue Zhou, Dong-qing Zhao, Yun-teng Liu, Jian-hua Wu, Yuan-sheng Yang, Bai-chang Ma, and Hai-hua Zhuang, Characteristics of AZ31 Mg alloy joint using automatic TIG welding, Int. J. Miner. Metall. Mater., 24(2017), No. 1, pp. 102-108. https://doi.org/10.1007/s12613-017-1383-8
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Characteristics of AZ31 Mg alloy joint using automatic TIG welding

  • Shandong Key Laboratory for High Strength Lightweight Metallic Materials, Advanced Materials Institute, Shandong Academy of Sciences, Jinan 250014, China

  • Shandong Engineering Research Center for Lightweight Automobiles Magnesium Alloys, Advanced Materials Institute, Shandong Academy of Sciences, Jinan 250014, China

  • Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

  • 通讯作者:

    Hong-tao Liu    E-mail: hongtaoliu@sdas.org

  • The automatic tungsten-inert gas welding (ATIGW) of AZ31 Mg alloys was performed using a six-axis robot. The evolution of the microstructure and texture of the AZ31 auto-welded joints was studied by optical microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and electron backscatter diffraction. The ATIGW process resulted in coarse recrystallized grains in the heat affected zone (HAZ) and epitaxial growth of columnar grains in the fusion zone (FZ). Substantial changes of texture between the base material (BM) and the FZ were detected. The {0002} basal plane in the BM was largely parallel to the sheet rolling plane, whereas the c-axis of the crystal lattice in the FZ inclined approximately 25° with respect to the welding direction. The maximum pole density increased from 9.45 in the BM to 12.9 in the FZ. The microhardness distribution, tensile properties, and fracture features of the AZ31 auto-welded joints were also investigated.
    • Research Article

    Characteristics of AZ31 Mg alloy joint using automatic TIG welding

    + Author Affiliations
      Abstract
    • The automatic tungsten-inert gas welding (ATIGW) of AZ31 Mg alloys was performed using a six-axis robot. The evolution of the microstructure and texture of the AZ31 auto-welded joints was studied by optical microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and electron backscatter diffraction. The ATIGW process resulted in coarse recrystallized grains in the heat affected zone (HAZ) and epitaxial growth of columnar grains in the fusion zone (FZ). Substantial changes of texture between the base material (BM) and the FZ were detected. The {0002} basal plane in the BM was largely parallel to the sheet rolling plane, whereas the c-axis of the crystal lattice in the FZ inclined approximately 25° with respect to the welding direction. The maximum pole density increased from 9.45 in the BM to 12.9 in the FZ. The microhardness distribution, tensile properties, and fracture features of the AZ31 auto-welded joints were also investigated.
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      • References(20)
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