About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Multiscale and Non-Equilibrium Solidification Fundamentals
|
| Presentation Title |
Model experiment for investigation of thermoelectric magnetohydrodynamics in metal additive manufacturing |
| Author(s) |
Valdemars Felcis, Ivars Krastins, Imants Kaldre, Catherine E H Tonry, Andrew Kao |
| On-Site Speaker (Planned) |
Andrew Kao |
| Abstract Scope |
External magnetic fields are a promising technique to improve control of melt flow, heat transfer and thus microstructure evolution in metal additive manufacturing (AM). However, due to the small scale of the melt pool, it is difficult and expensive to investigate flow structures directly, typically requiring X-ray synchrotrons. This work highlights how a scaled up experimental model representing AM allows us to directly observe, through optical measurements, the characteristic thermoelectric magnetohydrodynamic flow patterns. This scale experiment comprises a macroscopic bowl filled with liquid metal. It is complemented by a numerical model that can easily be applied across the length scales of the model experiment and real AM processes. Then, through dimensionless analysis, a direct comparison can be made between the two. This approach reveals new insights into how both a scanning and magnetic field strategy can be intimately linked to ultimately control the local solidification conditions during the build process. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Solidification |