Advertisement

Influences of Welding Current on Joint Structure and Mechanical Property of AZ31B Magnesium Board

  • Yingchun TianEmail author
  • Ping Gao
  • Jianjun Lv
  • Mingyi Zhang
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 217)

Abstract

In this thesis, the author regarded AZ31B magnesium alloy board as the welding parent metal to study metal inert gas (TIG) welding joint structure characteristics and mechanical properties. The findings showed that magnesium alloy weld joint presented the structure of the tiny isometric crystal. Weld joint owns relatively coarse crystalline grains. Also, welding metal is mainly composed of α-Mg solid solution and β-Mg17Al12 intermetallic compound. The tensile property of welding joint indicated that AZ61 welding wire can gain the high-quality weld joint. The strength reaches up to 91% of the parent metal. The fracture analysis showed that welding joint first fractured in the weld joint and the fracture shows the topographic characteristics of ductile–brittle mixed fracture.

Keywords

AZ31B magnesium alloy TIG welding Wire for welding Organization Tensile strength Hardness 

References

  1. 1.
    D. Sun, Study on weldability of magnesium alloy (AZ91D, AZ31B). Doctoral dissertation, Jilin University, Changchun, 2008Google Scholar
  2. 2.
    J. Yao, X. Wei, Microstructure and mechanical properties of AZ31B magnesium alloy welded joint. Weld. Technol. 41(1), 17–19 (2012)Google Scholar
  3. 3.
    N. Kazuhiro, Weldability of magnesium alloy. J. Light Met. Weld. Construction 39(12), 26–35 (2001)Google Scholar
  4. 4.
    J.A. Esparza, W.C. Davis, L.E. Murr, Micro structure property studies in friction stir welded thixomolded magnesium alloy AM60. J. Mater. Sci. 38(5), 941–952 (2003)CrossRefGoogle Scholar
  5. 5.
    W.B. Lee, Y.M. Yeon, S.B. Jung, Joint properties of friction stir welded AZ31B H24 magnesium alloy. Mater. Sci. Technol. 19(6), 785–790 (2003)CrossRefGoogle Scholar
  6. 6.
    H. Zhang, L. Wu, S. Lin et al., Friction stir welding of AZ31 magnesium alloy. Chin. J. Mech. Eng. 40(8), 123–126 (2004)CrossRefGoogle Scholar
  7. 7.
    G. Song, M. Li, W. Ji-jin et al., Study of YAG laser welding process on wrought magnesium. Appl. Laser 26(6), 327–330 (2003)Google Scholar
  8. 8.
    Z.-J. Liu, H. Jia, W. Zhang et al., Effects of welding current on AZ31 magnesium alloy joints. J. Shenyang Univ. Technol. 32(1), 40–44 (2010)Google Scholar
  9. 9.
    Y.-A. Miao, L.-M. Liu, J. Zhao, Analysis of microstructure characteristics of deformation magnesium alloy welded joint. J. Weld. 24(2), 63–65 (2015)Google Scholar
  10. 10.
    H.-X. Zhang, W.-X. Wang, S. Juan, Fracture mechanism of AZ31 magnesium alloy and its TIG welded joint. Rare Metal Mater. Eng. 38(3), 186–190 (2009)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Yingchun Tian
    • 1
    Email author
  • Ping Gao
    • 1
  • Jianjun Lv
    • 1
  • Mingyi Zhang
    • 1
  1. 1.Inner Mongolia Institute of Metal MaterialsBaotouChina

Personalised recommendations