| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Processing Fundamentals: Thermodynamics and Rate Phenomena
|
| Presentation Title |
EFFECT OF ARC TRANSIENTS ON FLOW IN VACUUM ARC REMELTING |
| Author(s) |
Caleb Schrad, Matthew Krane |
| On-Site Speaker (Planned) |
Caleb Schrad |
| Abstract Scope |
Vacuum Arc Remelting (VAR) is used to produce clean, sound, and homogenous ingots of high-performance alloys. During VAR, a consumable electrode is melted in vacuum by a powerful electric arc, which may be highly transient, exhibiting current excursions, unstable distributions, and wandering centers. As the process current passes through the ingot, it induces an electromagnetic body force which interacts with buoyancy to determine the liquid metal flow regime. This transient electromagnetic influence can significantly impact the quality of the final ingot. The purpose of this work is to explore the impact of arc transients on ingot solidification using a transient 3D VAR model implemented in OpenFOAM. This model includes spatial and temporal variations of the arc. The influence of arc transients on flow and solidification behavior and the use of external magnetic fields to alter those liquid flows are studied. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Modeling and Simulation, |