FeAl合金是金属间化合物研究的热点之一,高温相平衡是其研究的重要基础.Kikuchi提出的CVM和NIM为合金相平衡及热力学性质的理论计算提供了一种广为利用的方法.吴非和郑伟涛等用此方法曾计算了Fe-Mn,Ag-Au和Au-Cu二元合金相图,取得了较好的结果,但他们的计算仅限于无序固溶体的相平衡.本文在提出计算有序相键能的“部分平均原子模型”的基础上,将Kikuchi的CVM和NIM与余氏电子理论相结合,计算FeAl有序相与液相之间的平衡参数,结果令人满意. FeAl alloy is one of the hot spots in the research of intermetallic compounds.High temperature phase equilibrium is an important foundation for its research.KiUuchi’s CVM and NIM provide a widely used method for the theoretical calculation of phase equilibrium and thermodynamic properties of alloys.Wu Fei And Zheng Weitao and other methods have been calculated using this method Fe-Mn, Ag-Au and Au-Cu binary alloy phase diagram, and achieved good results, but their calculations are limited to the disordered solid solution phase equilibrium. Based on the “partial average atomic model” of ordered phase energy, Kikuchi’s CVM and NIM are combined with Yu’s electronic theory to calculate the equilibrium parameters between FeAl ordered and liquid phases. The results are satisfactory.