In the framework of the CALPHAD method, a thermodynamic database was developed for calculating the thermodynamic properties of liquid alloys in the Co–Cr–Cu–Fe–Ni system and its quaternary subsystems. The thermodynamic mixing functions of the melts were calculated at 1873 and 1500 K. The calculated excess integral mixing functions showed positive values in a major part of the composition space of the four-component systems with copper and the Co–Cr–Cu–Fe–Ni system. The ideal contribution to the Gibbs energy of mixing for four- and five-component melts of the Co–Cr–Cu–Fe–Ni system was predominant. The excess Gibbs energy of mixing for equiatomic liquid alloys of the four-component systems with copper and the Co–Cr–Cu–Fe–Ni system was lower in magnitude than the ideal component of the Gibbs mixing energy. With decreasing temperature, the positive deviations from the ideal behavior of the excess Gibbs mixing energy increased and the magnitude of the ideal Gibbs mixing energy decreased, resulting in lower thermodynamic stability of the liquid phase. The calculated separation temperatures for four- and five-component equiatomic Co–Cr–Cu–Fe–Ni melts varied in the 1370–1770 K range. The highest liquid-phase separation temperatures were observed in the melts containing both copper and chromium.

在CALPHAD方法的框架内，开发了一个热力学数据库，用于计算Co-Cr-Cu-Fe-Ni系统及其四级子系统中液态合金的热力学性质。熔体的热力学混合函数在1873年和1500 K下计算。计算出的过量积分混合函数在含铜和Co–Cr–Cu–Fe–的四元体系组成空间的主要部分中显示出正值。镍制。Co-Cr-Cu-Fe-Ni系统的四组分和五组分熔体对吉布斯混合能的理想贡献是主要的。四组分体系与铜和Co-Cr-Cu-Fe-Ni体系的等原子液态合金混合时的多余Gibbs混合能在数量级上低于Gibbs混合能的理想混合量。随着温度的降低，与过量吉布斯混合能的理想行为的正偏差增加，并且理想吉布斯混合能的大小减小，导致液相的热力学稳定性降低。计算出的四组分和五组分等原子Co-Cr-Cu-Fe-Ni熔体的分离温度在1370-1770 K范围内变化。在同时含有铜和铬的熔体中观察到最高的液相分离温度。