The Zn–Mn system has been critically re-assessed based on available experimental data from literature by CALPHAD (CALculation of PHAse Diagram) approach. Solution phases, viz. liquid, (δMn), (γMn), (βMn), (αMn) and (Zn) were described using substitutional solution model. Besides, the ε, αˊ, γ, δ, δ₁ and ζ phases were described by the sub-lattice models based on the reported crystallographic information and homogeneity ranges. The β₁ phase was treated as a stoichiometric compound since no distinct homogeneity range of this phase was reported. Thermodynamic parameters on the whole system compatible with the databases of Thermo-Calc and Pandat were first obtained. Compared with previous assessments, calculations using the presently obtained thermodynamic parameters achieved a significant improvement. To further verify the reliability of the obtained thermodynamic parameters, eight as-cast Zn–Mn alloys were prepared and the phase compositions and solidified microstructures were analyzed by X-ray diffraction (XRD) and electron probe microanalysis (EPMA). It was shown that the observed experimental results agreed well with the Scheil solidification calculations.

锌锰系统已通过CALPHAD（PHAse图的计算）方法根据文献中的可用实验数据进行了严格的重新评估。解决方案阶段，即。使用替代溶液模型描述了液体（δMn），（γMn），（βMn），（αMn）和（Zn）。此外，ε，α'，γ，δ，δ ₁和ζ相通过基于子晶格模型描述报道结晶信息和同质性范围。该β ₁由于未报告该相均一的均一性范围，因此将该相视为化学计量的化合物。首先获得与Thermo-Calc和Pandat数据库兼容的整个系统的热力学参数。与以前的评估相比，使用当前获得的热力学参数进行的计算取得了显着改善。为了进一步验证所获得的热力学参数的可靠性，制备了8种铸态Zn-Mn合金，并通过X射线衍射（XRD）和电子探针显微分析（EPMA）分析了相组成和凝固的显微组织。结果表明，观察到的实验结果与Scheil凝固计算非常吻合。