About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Fundamental Science of Microstructural Evolution and Phase Transformations: An MPMD/FMD/SMD Symposium in Honor of Peter Voorhees
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| Presentation Title |
CH-PFC Simulation of Spinodal Decomposition in Binary Alloys |
| Author(s) |
Sourav Ghosh, Kumar Ankit |
| On-Site Speaker (Planned) |
Sourav Ghosh |
| Abstract Scope |
Understanding microstructural evolution during phase separation is critical for tailoring material properties in alloys. We present a coupled Cahn–Hilliard Phase-Field Crystal (CH-PFC) model to investigate spinodal decomposition in binary alloy systems with atomistic resolution. Unlike kinetic Monte Carlo or molecular dynamics methods, which are computationally intensive for large systems and long times, the PFC approach captures both crystalline ordering and long-time diffusive dynamics efficiently. This makes it well suited for bridging atomistic structure and mesoscale composition evolution. In the CH-PFC model, the composition field evolves according to the Cahn–Hilliard equation, while the density field evolves via a PFC formulation sensitive to the underlying lattice symmetry. Simulations on a FCC binary system reveal the emergence of modulated density profiles aligned with the phase-separated regions, offering insight into crystallographic effects during decomposition. These results highlight the utility of CH-PFC in studying realistic alloy systems beyond the capabilities of conventional approaches. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Phase Transformations, ICME |