Plewinski J, Markl M (2026)
Publication Type: Journal article
Publication year: 2026
Original Authors: Jonas Plewinski, Matthias Markl
Book Volume: 143
Pages Range: 356-360
DOI: 10.1016/j.procir.2026.07.075
Melt pool dynamics strongly influence solidification in laser beam welding by shaping temperature gradients, interface velocities, and ultimately microstructure and defect susceptibility. Although thermal-only models are still widely used for process prediction, they neglect convective heat and mass transport arising from Marangoni effects at the surface and pressure-driven flow near the keyhole.
In this study, we directly compare a thermal-only simulation with a coupled fluid–thermal model under quasi-stationary deep-penetration conditions to isolate the effects of convection. We investigate how melt pool flow modifies the temperature field and reshapes the solidification front and the mushy zone. The coupled simulation predicts non-uniform temperature distributions and characteristic changes in the mushy zone, resulting in systematically altered temperature gradients and interface velocities compared to thermal-only models.
APA:
Plewinski, J., & Markl, M. (2026). Convection effects on solidification conditions in laser beam welding. Procedia CIRP, 143, 356-360. https://doi.org/10.1016/j.procir.2026.07.075
MLA:
Plewinski, Jonas, and Matthias Markl. "Convection effects on solidification conditions in laser beam welding." Procedia CIRP 143 (2026): 356-360.
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