The Hot Cracking Susceptibility Subjected the Laser Beam Oscillation Welding on 6XXX Aluminum Alloy with a Partial Penetration Joint

Authors

Minjung Kang, Korea Institute of Industrial Technology
Jason Cheon, Korea Institute of Industrial Technology
Dong Hyuck Kam, Korea Institute of Industrial TechnologyFollow
Cheolhee Kim, Portland State UniversityFollow

Published In

Journal of Laser Applications

Document Type

Article

Publication Date

2-1-2021

Subjects

Laser Welding -- Modeling Simulation

Abstract

A laser beam oscillation method using Galvano mirrors, which allows wide weld beads and controls thermal stress distribution, was suggested to suppress the formation of solidification cracks in laser welds. In order to understand the solidification cracking behavior in relation to the bead shape, laser beam oscillation welding was performed under various oscillation widths and frequency conditions. To evaluate the effect of the oscillation parameter on solidification cracking susceptibility, a regression analysis based on the shape of the bead was performed. Stress distribution generated during the laser beam oscillation welding process was also analyzed using finite element modeling simulation. From the results, it was demonstrated that a high shrinkage stress field at the bottom of the partial penetrated bead suppresses the solidification cracking.

Rights

1. © 2020 Author(s). Published under license by Laser Institute of America

Locate the Document

https://doi.org/10.2351/7.0000319

DOI

10.2351/7.0000319

Persistent Identifier

https://archives.pdx.edu/ds/psu/35191

Citation Details

Kang, M., Cheon, J., Kam, D. H., & Kim, C. (2021). The hot cracking susceptibility subjected the laser beam oscillation welding on 6XXX aluminum alloy with a partial penetration joint. Journal of Laser Applications, 33(1), 012032. https://doi.org/10.2351/7.0000319