About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Investigating Rapid Solid-state Phase Transformations |
| Author(s) |
Tobias Kaaden, Alexander Walnsch, Stephanie Lippmann |
| On-Site Speaker (Planned) |
Stephanie Lippmann |
| Abstract Scope |
The mechanism of a phase transformation depends on undercooling, diffusion kinetics and the nature of the interface. For the bcc/fcc transformation in Cu-Zn based systems, the competition between different mechanism is high, mainly due to parallel solvus lines and the fast diffusion of Zn in Cu. Experimental investigations of the various mechanisms require a significant level of fine-tuning.
Employing one- and multidimensional multicomponent concentration gradients and controlled pulse heating, the conditions for different mechanisms are accessible. For pulse heating, a new device was developed and built that uses high current in combination with low voltage and allows controlled heating of low-resistance samples while simultaneously measuring local temperatures with high temporal and spatial resolution. The spectrum of transformations ranging from purely diffusion controlled, coupled growth, massive transformation to solely interface controlled martensitic transformation can be thoroughly examined. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Characterization, |