Development of a Multi-Scale Phase-Field Model Integrating Finite Element and CALPHAD Methods for Rheo Casting

Abstract This study develops a multiscale modeling framework integrating finite element simulation, CALPHAD thermodynamics, and phase-field modeling to investigate microstructural evolution during semi-solid slurry preparation of Al-7Si alloy via the SEED process. The established non-isothermal phase-field model dynamically couples temperature and concentration distributions, updating solute partition coefficients and interfacial equilibrium concentrations in real-time through CALPHAD computatio