Abstract
Abstract Thermodynamic assessments for the Cr-Si and Al-Cr-Si systems were conducted on the basis of the critically evaluated thermodynamic and phase diagram data available in the literature. The Modified Quasi-chemical Model (MQM) was utilized to model the Gibbs energy of the liquid phase and the Compound Energy Formalism (CEF) was used to model the solid phases. Comprehensive comparison between the model-predicted and the experimentally measured phase diagram and thermodynamic property data indicates that the optimized thermodynamic descriptions for the Cr-Si and Al-Cr-Si systems are reliable. Accurate thermodynamic descriptions obtained in the present work in the form of a set of Gibbs energies of all the solid and liquid phases can be used to calculate the phase equilibria and thermodynamic properties in the Al-Cr-Si system at any composition and temperature. As the application of the present thermodynamic study, the solubility limit of Cr in the Al-Si alloy was calculated.
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