Finite element simulation of magnesium alloys laser beam welding

In this paper, a three-dimensional finite element model is developed to simulate thermal history magnesium-based alloys during laser beam welding. Space–time temperature distributions in weldments are predicted from the beginning of welding to the final cooling. The finite element calculations were...

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Bibliographic Details
Published in:Journal of materials processing technology 2010-06, Vol.210 (9), p.1131-1137
Main Authors: Belhadj, Asma, Bessrour, Jamel, Masse, Jean-Eric, Bouhafs, Mahmoud, Barrallier, Laurent
Format: Article
Language:English
Subjects:
Alloys
Computer simulation
Density
Engineering Sciences
FEM simulation
Finite element method
Laser beam welding
Laser welding
Magnesium alloy
Materials
Mathematical analysis
Mathematical models
Thermal analysis
Welding
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Summary:In this paper, a three-dimensional finite element model is developed to simulate thermal history magnesium-based alloys during laser beam welding. Space–time temperature distributions in weldments are predicted from the beginning of welding to the final cooling. The finite element calculations were performed using Cast3M code with which the heat equation is solved considering a non-linear transient behaviour. The applied loading is a moving heat source that depends on process parameters such as power density, laser beam dimensions and welding speed, and it is associated to moving boundary conditions. Experiments were carried out to determine temperature evolution during welding and to measure the laser weld width. By comparing the thermal model answers with the measurements, it is found that numerical simulations results are in a good agreement with the experimental data.
ISSN:0924-0136
1873-4774
DOI:10.1016/j.jmatprotec.2010.02.023