NPTEL :: Metallurgy and Material Science - NOC:Phase field modelling: the materials science, mathematics and computational aspects
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Concepts covered in this lecture : In this lecture, we study the solution models, namely, ideal solution model and regular solution model. For deriving the free energy expression, the enthalpy of mixing is considered as zero in the case of ideal solution model, and, non-zero ( but delta Hmix << 1) in the case of regular solution model. The entropy of mixing is derived by considering only the con gurational entropy and random distribution.

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