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Double-sided hybrid laser-MIG welding plus MIG welding of 30-mm-thick aluminium alloy

  • Zhao Jiang
  • Xueming Hua
  • Lijin Huang
  • Dongsheng Wu
  • Fang Li
  • Yuelong Zhang
ORIGINAL ARTICLE
  • 131 Downloads

Abstract

Hybrid laser-MIG (metal inert gas) welding has not been extensively applied in welding of aluminium alloy with thickness more than 10 mm because of the existence of weld defects and low joint strength. In this study, an original hybrid laser-MIG welding plus MIG welding process was developed. Double-sided hybrid laser-MIG welding method was designed and applied to the welding of 30-mm-thick Al 5083 alloy. The process was then optimized by overlaying a MIG welding upon the weld. Analysis on the weld revealed that the overlaid MIG welding played multiple roles, including making up the bead formations, eliminating the keyhole-induced porosities as well as refining grains. Along the longitudinal direction of the weld, the grains became finer from two fringes to the middle, and the mechanical properties improved accordingly. Compared with MIG welding, the hybrid laser-MIG welding plus MIG welding process showed overwhelming superiorities over the MIG welding, which will be promising in industrial applications.

Keywords

Hybrid laser-MIG welding plus MIG welding Double-sided welding Porosity Al 5083 alloy 

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Notes

Acknowledgements

This work was supported by the Ministry of Industry and Information Technology of China under the project of LNG shipbuilding.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  • Zhao Jiang
    • 1
    • 2
  • Xueming Hua
    • 1
    • 2
  • Lijin Huang
    • 1
    • 2
  • Dongsheng Wu
    • 1
    • 2
  • Fang Li
    • 1
    • 2
  • Yuelong Zhang
    • 1
    • 2
  1. 1.Shanghai Key Laboratory of Materials Laser Processing and ModificationShanghai Jiao Tong UniversityShanghaiPeople’s Republic of China
  2. 2.Collaborative Innovation Centre for Advanced Ship and Deep-Sea ExplorationShanghaiPeople’s Republic of China

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