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Meeting

2026 TMS Annual Meeting & Exhibition

Symposium

Computational Thermodynamics and Kinetics

Presentation Title

Calphad-Based Modeling of Microstructure Evolution in Fe/Mn-Rich Aluminum Casting Alloys

Author(s)

Hyung-Uk Jang, Hwi-Jae Cho, Dong-Uk Kim, Pil-Ryung Cha

On-Site Speaker (Planned)

Hyung-Uk Jang

Abstract Scope

Accurate prediction of solidification microstructures in aluminum casting alloys requires simulation models that faithfully capture the thermodynamic behavior of both primary α-AlMnSi and β-AlFeSi phases. In this study, we develop a phase-field simulation for the Al–Si–Fe–Mn quaternary system using Calphad-based thermodynamic descriptions. Composition-dependent free energy functions are defined for each phase, enabling the modeling of competitive growth and morphological evolution of α and β phases during solidification. The simulated microstructures are qualitatively compared with experimental images reported in the literature, showing strong agreement in the morphology and distribution of β-AlFeSi phases. This work presents a modeling approach that aids in interpreting experimental observations and provides foundational data for predicting microstructure evolution in multicomponent aluminum casting alloys.

Proceedings Inclusion?

Planned:

Keywords

Computational Materials Science & Engineering, Solidification, Phase Transformations

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