基于Miedema模型和Tanaka关系,提出了计算分子相互作用体积模型(MIVM)参数的新方法.该方法仅需知道元素的某些物理性质而无须熔体的实验数据,简化了计算多元合金熔体活度系数的步骤.分别计算了Ti-6Al-4V和Ti-5Al-2.5Sn在不同温度下组元活度系数的变化,计算了多种铜基合金以及Zn-Sn-Pb-Cd-Bi合金的活度或活度系数与组元配比的关系;并与Wilson模型进行了比较,计算值与实验值较好吻合.
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