| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Computational Techniques for Multi-Scale Modeling in Advanced Manufacturing
|
| Presentation Title |
Particle Resolved Simulation of Laser Powder-bed Fusion Including Metal Evaporation and Vapor Plume Dynamics |
| Author(s) |
Juergen Jakumeit, Romuald Laqua, Gongyuan Zheng, Yuze Huang, Samuel J. Clark, Peter D. Lee |
| On-Site Speaker (Planned) |
Juergen Jakumeit |
| Abstract Scope |
Laser Powder-Bed Fusion (LPBF) of metal alloys is the most widely used Additive Manufacturing (AM) process for metals. However, our ability to use computational simulations of the process for optimization is still limited, as is our understanding of some of the underlying mechanisms. Here we develop a multi-phase melting, evaporation and solidification computational simulation, which treats melt vapor as ideal gas. We study in detail the formation of keyhole in the melt-pool, the metal vapor plume dynamics and the impact on defect formation. The simulation results are validated with transient melt-pool and keyhole dimensions measured from in situ synchrotron X-ray imaging during LPBF. We determine the influence of process parameters on the strength and formation of the metal vapor plume. The results of our study increase our understanding of the multi-phase nature of LBPF including spatter and the formation and content of pores. |
| Proceedings Inclusion? |
Planned: |