Modeling phase separation in solids beyond the classical nucleation theory: Application to FeCr.

Area of Science:

• Materials Science
• Physical Chemistry
• Condensed Matter Physics

Background:

• Phase separation in solids is crucial for material properties but challenging to model, especially outside the spinodal regime.
• Classical nucleation theory struggles with systems far from the solubility limit (high metastability).

Purpose of the Study:

• To present an alternative to classical nucleation theory for modeling phase separation in the nucleation and growth regime.
• To enable modeling of phase separation in highly metastable solid systems.

Main Methods:

• Development of an alternative theoretical framework to classical nucleation theory.
• Application to modeling phase separation in solids with a high degree of metastability.

Main Results:

• The proposed method effectively models phase separation in the nucleation and growth regime.
• It extends modeling capabilities to systems with high metastability, where classical theory fails.
• Facilitates direct comparison between computational simulations and experimental data.

Conclusions:

• The new model provides a more robust approach for understanding phase separation in solids.
• It bridges the gap between theoretical modeling and experimental observations in metastable systems.
• Crucial for designing materials with tailored properties through controlled phase separation.