About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Frontiers in Solidification: An MPMD Symposium Honoring Jonathan A. Dantzig
|
Presentation Title |
Phase-field Simulations of Peritectic Coupled Growth |
Author(s) |
Mathis O. Plapp |
On-Site Speaker (Planned) |
Mathis O. Plapp |
Abstract Scope |
Contrary to eutectic coupled growth, which is the most common growth mode for the solidification of eutectic alloys close to the eutectic composition, coupled growth occurs during the directional solidification of pertectic alloys only for specific ranges in composition, growth velocity, and applied temperature gradient. Only a few specific alloy systems have been studied in detail so far, among which Fe-Ni and Cu-Sn. Phase-field simulations offer a unique opportunity to study the conditions under which peritectic coupled growth is possible. A detailed comparison between phase-field simulations of the Cu-Sn system and the Jackson-Hunt-like theory for peritectic coupled growth is presented. Furthermore, the convergence behavior of phase-field models of peritetics with decreasing interface thickness is analyzed. Differences with the sharp-interface treatment by boundary-integral methods can be linked to the phenomenon of trijunction rotation, which is much stronger in pertectic than in eutectic two-phase growth. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Phase Transformations, Solidification |