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采用扩散偶-电子探针法系统测定了Ti－Al－Cr三元系1000—1300℃的α2（α）／γ相平衡关系和相平衡成分，绘出了Cr含量小于10％（原子分数）范围的Ti－Al-Cr三元系局部等温截面和Ti-Al局部纵截面相图，明确了Cr在α2（α）和γ相中分配比的变化规律，研究结果支持Cr在γ-TiAl相中取代Al的位置，降低γ-TiAl相中Al含量的观点．
The equilibrium and phase equilibrium components of α2 (α) / γ phase in Ti-Al-Cr ternary system at 1000-1300 ℃ were measured by the diffusion-electron probe system. The results show that the Cr content is less than 10% Range of Ti-Al-Cr ternary local isothermal section and Ti-Al partial longitudinal section of the phase diagram, clear Cr in α2 (α) and γ phase distribution ratio changes, the results support the Cr in the γ-TiAl phase In place of the position of Al to reduce the content of Al in the γ-TiAl phase.