ABSTRACT

The thermodynamic and structural properties of Fe – based (Al-Fe and Fe-Si) alloys in their liquid states at different higher temperatures have been studied assuming the interaction parameters of R-K polynomial are linearly and exponentially dependent on temperature. It has been observed that artificial miscibility gaps (also called artefacts) appear in the thermodynamic and structural properties of the aforementioned alloys at high temperature when the interaction parameters are assumed to be linearly dependent on temperature. The artificial miscibility gaps or artefacts observed in the former case are eliminated when the interaction parameters are supposed to be exponentially dependent on temperature. This implies that the interaction parameters of RK-polynomial for liquid alloys vary exponentially at elevated temperatures.

摘要

假设 RK 多项式的相互作用参数与温度呈线性和指数关系，研究了 Fe 基（Al-Fe 和 Fe-Si）合金在不同较高温度下处于液态时的热力学和结构特性。已经观察到，当假设相互作用参数与温度线性相关时，在高温下上述合金的热力学和结构特性中会出现人工混溶间隙（也称为人工制品）。当假设相互作用参数与温度呈指数关系时，消除了在前一种情况下观察到的人为混溶间隙或人工制品。这意味着液态合金的 RK 多项式的相互作用参数在升高的温度下呈指数变化。