设计了一种简单的扩散偶，用扩散偶－电子探针法，测定了1200和1250℃Ti－Al－Cr—Fe四元系中XCr≤4％和XFe≤1％范围内的α／γ相平衡关系和相平衡成分，绘出了四元系的局部等温正方形结果表明，在Ti—Al—Cr—Fe四元系中，Cr有提高Fe在α相中的溶解度的作用；Fe亦有提高Cr在α相中的溶解度的趋势
A simple type of diffusion couple was designed. The compositions of the phase equilibrium α/γ at 1200℃ and 1250℃ in Ti-Al-Cr-Fe quarternary system have been determined by the diffusion couple-electron probe method, and partial isothermal squares for Ti-Al-Cr-Fe quarternary system have been drawn. The results show that Cr has the effect of increasing the solubility for Fe in the α phase and Fe has the effect of increasing the solubility for Cr in the α phase.
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