Open AccessEffect of welding sequence on residual stress and deformation of Mg alloy fillet welds
Author(s) -
Naiwen Fang,
Liansheng Li,
Runsheng Huang,
Hao Cao,
Ke Xu,
Ji-Peng Zou
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1635/1/012032
Subject(s) - fillet (mechanics) , residual stress , welding , materials science , fillet weld , metallurgy , structural engineering , alloy , composite material , engineering
In order to investigate the effect of welding sequence on stress distribution and deformation of Mg alloy fillet welds, DE-GMAW modified Gaussian heat source model established by MSC. Marc software was applied to the numerical simulation analysis of welding temperature field and stress field and proved by measurement of residual stress by blind hole method. The results indicated that the deformation and residual stress were lowest according to the sequence of welding fillet welds from the head of cylinder to the end on one side first and then welding in the opposite on the other side. The trend of residual stress measurement results was consistent with numerical simulation analysis results with 10% error, which provided theoretical support for stress distribution and deformation control of Mg alloy fillet welds.