About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Multiscale and Non-Equilibrium Solidification Fundamentals
|
| Presentation Title |
Thermo-solutal conditions for melt pool solidification in laser direct energy deposition of bi-metallic structures |
| Author(s) |
Jun Fan, Daniel Rubio-Ejchel , Michael Lester, William LePage, Jerard Gordon, Wenda Tan |
| On-Site Speaker (Planned) |
Wenda Tan |
| Abstract Scope |
In Laser Direct Energy Deposition (L-DED) of bi-metallic structures, powders of two different compositions and properties are mixed and fed into the melt pool. They introduce significant yet different mechanical and thermal disturbances, which profoundly affect the melt pool behavior and ultimately the thermo-solutal conditions for solidification and microstructure evolution. In this work, a new process model based on the Smoothed Particle Hydrodynamics (SPH) method has been developed to resolve the powder-level details associated with the powders impacting, melting (if any), and mixing in the melt pool. The effects of these dynamic phenomena on the heat/mass transfer as well as the thermo-solutal conditions for melt pool solidification are investigated, and their influences on the final bi-metallic microstructure are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Solidification, Modeling and Simulation |