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用热扩散偶实验和热力学模型研究和计算了 Ｎｉ－Ａｌ－Ｃｒ系富 Ｎｉ区γ，ａ，γ’和β相的相平衡。用规则溶体和亚点阵模型计算了该体系９００℃－１３００℃区间的等温截面，计算结果与实验值相符合。
The phase equilibrium of γ, a, γ ’and β phases in the Ni-Al-Cr Ni-rich region was studied and calculated by thermal diffusivity test and thermodynamic model. The isothermal cross-section of the system at 900 ℃ -1300 ℃ was calculated by regular solution and sub-lattice model. The calculated results are consistent with the experimental data.