About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification X
|
| Presentation Title |
Multiphysics Simulation and Microstructure Prediction of Coaxial Wire-Laser Additive Manufacturing Process |
| Author(s) |
Zichen Kong, Gildas Guillemot, Michel Bellet, Charles-Andre Gandin |
| On-Site Speaker (Planned) |
Charles-Andre Gandin |
| Abstract Scope |
The work addresses the numerical modeling of heat transfer, fluid flow and microstructure formation in the wire-laser additive manufacturing (WLAM) process. The three-beam WLAM configuration is studied, where the primary laser light is divided into equivalent beams which coaxially converge to heat the feeder wire just prior its plunging and melting into the melt pool. Cellular automaton method is coupled within the finite element analysis to predict grain structure development based on the temperature field evolution during the solidification stage. The coupled methodology is first applied to single-track deposition of IN718 on a substrate made of the same alloy. The influence of process parameters on bead morphology, microstructure evolution and texture formation are compared with measurements. Finally, multiple tracks, wall constructions and curved trajectories are investigated, considering the effects of the laser head configuration, i.e. the position of the three laser beams with respect to the scanning strategies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Solidification, Modeling and Simulation |