Abstract

Predicting the thermodynamic properties of multicomponent solution based on binary data is highly desirable. However, traditional methods face many challenges in practical applications due to the unclear mechanisms for obtaining the molar composition of sub-binary terms. In this article, a new extrapolation model is suggested, which derived from the assumption of the Kohler model. It determines the molar composition points of each sub-binary system through a clear mechanism by introducing the contribution coefficient, defined by the property differences between two components. Moreover, the new model can mathematically obtain all potential molar composition points of sub-binary systems. Additionally, a simple and effective method for calculating the property difference between two components is recommended. The performance of this new extrapolation model is demonstrated in several multicomponent alloy systems with different properties.

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