About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Field-Assisted Material Processing and Solidification
|
| Presentation Title |
A model experiment to predict the thermoelectric currents present in an additive manufacturing melt pool |
| Author(s) |
Valdemārs Felcis, Imants Kaldre, Andrew Kao, Ivars Krastins, Catherine E H Tonry |
| On-Site Speaker (Planned) |
Catherine E H Tonry |
| Abstract Scope |
Additive manufacturing creates possibilities to print custom parts quickly and without significant setup costs. In certain alloys, such as AlSi, the large temperature gradients present in additive manufacturing combined with differences in Seebeck coefficient between the solid and the liquid phases result in large thermoelectric currents. When these currents interact with a magnetic field strong magnetohydrodynamic flows are induced in the melt pool. Here we discuss a model experiment that has been devised to study these flows at a macroscale.
Introducing an external current interacts with the thermoelectric effect modifying the net flow. This approach also allows prediction of magnitude of the thermoelectric currents in the model experiment. Modelling and scaling analysis are then used to predict the magnitude of these currents in additive manufacturing. Linking this model experiment to the real process provides better understanding of flow control within the meltpool leading to enhanced printed parts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Process Technology |