About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification X
|
| Presentation Title |
The Effects of Start-Up Conditions During Vacuum Arc Remelting of Nickel Based Superalloys |
| Author(s) |
Caleb Schrad, Matthew Krane, Dmytro Zagrebelnyy |
| On-Site Speaker (Planned) |
Caleb Schrad |
| Abstract Scope |
Vacuum Arc Remelting (VAR) is used on high-performance alloys to produce clean, homogeneous ingots. During VAR, a previously cast ingot is remelted under vacuum by an electric arc. The power of this arc is varied; being the highest during the start-up phase and lower during steady-state remelting. The start-up power must be high enough and last long enough to overcome the thermal inertia of the system and achieve the target melt rate. In order to not overshoot steady-state conditions, the arc power is then gradually lowered to appropriate levels. In industrial practice, understanding how the start-up power, the duration of the start-up, and the transition to steady-state affect the quality of the final ingot is critical. The purpose of this work is to parametrically explore the impact of these start-up conditions on ingot solidification using a transient 3D VAR model implemented in OpenFOAM. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Solidification, Modeling and Simulation |