About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
A Model Experiment of Meltpool Dynamics in Additive Manufacturing with Magnetic Fields |
Author(s) |
Valdemārs Felcis, Koulis Pericleous, Imants Kaldre, Catherine Tonry, Ivars Krastins, Peter Soar, Andrew Kao |
On-Site Speaker (Planned) |
Valdemārs Felcis |
Abstract Scope |
We have developed a model experiment representing thermoelectric magnetohydrodynamics in the additive manufacturing meltpool, in the presence of an external magnetic field. This comprises a hemispherical copper bowl (representing the solid/powder) filled with liquid Galinstan (representing the meltpool). A heated cobalt rod is immersed in the Galinstan generating thermal gradients, hence thermoelectric currents between the Galinstan and electrode and surrounding media. Applying a magnetic field, surface flow is observed agreeing to numerical simulations. Although not at the same scale, these fluid flow patterns are representative of microscale meltpool dynamics in real AM processes, used to predict their influence on microstructure evolution. Consequently, from this model experiment we can more easily test how varying thermal, electrical, and magnetic field conditions (such as magnetic field orientation), affect the meltpool dynamics. This comparison allows us to validate our models and increase our understanding of how magnetic fields influence the AM process. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Characterization |