In the present work, the Al–Co–Mn ternary system is thermodynamically modelled using the Calphad approach. In the modelling, experimental data such as liquidus, solidus, tie lines, and phase boundaries are included. An order–disorder model is used to describe the bcc and B2 phases. The bcc/B2 description was modified in the binary Al–Co system to improve the fit of bcc/B2 equilibria in the ternary system. The thermodynamic models of Al₅Co₂, M-Al₁₃Co₄, ${\gamma }_1$, and ${\gamma }_2$ intermetallic phases were modified to include the third element to reflect the solubility of this element in the ternary system. The ternary phase T-AlCoMn is described as a stoichimetric compound. Ternary interaction parameters for liquid, bcc, β-Mn, and hcp were optimized, using all the relevant experimental data in the literature. Calculated isothermal and isoplethal sections are compared with experimental data. A comparison between modelling and experimental measurements showed a good agreement between the present results and experiments.

在目前的工作中，使用Calphad方法对Al-Co-Mn三元体系进行了热力学建模。在建模中，包括了液相线，固相线，连接线和相边界等实验数据。有序-无序模型用于描述密件抄送和B2阶段。在二元Al-Co系统中修改了bcc / B2描述，以提高三元系统中bcc / B2平衡的拟合度。Al ₅ Co ₂，M-Al ₁₃ Co ₄，${\gamma }_{\mathrm{1个}}$和 ${\gamma }_2$金属间相经过修饰以包含第三种元素，以反映该元素在三元体系中的溶解度。三元相T-AlCoMn被描述为化学计量的化合物。利用文献中所有相关的实验数据，优化了液体，bcc，β- Mn和hcp的三元相互作用参数。将计算出的等温截面和等渗截面与实验数据进行比较。建模和实验测量之间的比较表明当前结果和实验之间有很好的一致性。