About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Field-Assisted Material Processing and Solidification
|
| Presentation Title |
The Solidification Velocity in Undercooled Zirconium-Niobium during Electromagnetic Levitation Experiments |
| Author(s) |
Gwendolyn P. Bracker, Cullen Jacene, Stephan Schneider, Mitja Beckers, Sarah Nell, Benedikt Reiplinger, Robert W. Hyers |
| On-Site Speaker (Planned) |
Gwendolyn P. Bracker |
| Abstract Scope |
During solidification of alloys, the growth rate of dendrite tips depends on the undercooling in the liquid, local solute concentrations, and kinetic effects. Convection within the liquid can provide significant transport both to and from the solidification front. Experiments in reduced-gravity electromagnetic levitation provide a unique environment in which the stirring in the liquid can be decoupled from buoyancy forces and the effects of convection can be directly studied. The growth velocity of Zirconium- Niobium 2.5 at% was measured across a range of undercoolings and stirring conditions using electromagnetic levitation experiments onboard the International Space Station. Internal convection within the melt was determined using multi-physics models to calculate the induced fluid flow and its effects on the growth rate of the newly forming solid. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Other, |