About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamental Science of Microstructural Evolution and Phase Transformations: An MPMD/FMD/SMD Symposium in Honor of Peter Voorhees
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| Presentation Title |
Improving the Performance of Quantitative Phase-Field Models for Concentrated Alloys |
| Author(s) |
Alexander F. Chadwick |
| On-Site Speaker (Planned) |
Alexander F. Chadwick |
| Abstract Scope |
Phase-field methods (PFMs) for simulating microstructural evolution during solidification and deposition have historically considered slow kinetic processes where details of interfacial reactions are neglected and a local chemical equilibrium is imposed. While successful for dilute alloys, these models become expensive as we increase the number and concentration of alloying elements, which limits their use in predictive modeling tools for Integrated Computational Materials Engineering. I present a PFM that directly embeds sets of interfacial reactions in the governing equations of the system. This eliminates the local equilibrium assumption, which simplifies model implementation and reduces the computational cost for arbitrary bulk free energies. With improved numerical methods and careful algorithm design, concentrated alloy systems can be simulated efficiently, even for multiple components and constitutive phases. The quantitative power of the framework is demonstrated for rapid solidification in Cr-Fe alloys, where it successfully reproduces solute drag behaviors predicted by atomistic simulations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
ICME, Computational Materials Science & Engineering, Solidification |