研究了Ｎｉ２５Ａｌ１５Ｃｒ（ 摩尔分数， ％ ） 多相金属间化合物合金的显微组织及热处理对其组织的影响。结果表明：１２００ ℃２４ ｈ 均匀化后的冷却速度不仅影响β相中αＣｒ 析出物的尺寸， 且影响β相的成分及体积分数； 空冷后时效， β相分解成γ′相和有序度更高的β相， 炉冷后时效， β相保持稳定； 并对时效过程中β相稳定性与时效前冷却速度之间的关系进行了讨论 The microstructure of Ni25Al15Cr (molar fraction,%) multi-phase intermetallic compound alloy and the effect of heat treatment on its microstructure were studied. The results show that the cooling rate after homogenization at 1200 ℃ for 24 h not only affects the size of αCr precipitates in β phase, but also affects the composition and volume fraction of β phase. After air cooling, β phase decomposes into γ ’phase and ordered The β phase is higher, the β-phase is stable after the furnace cooling, and the relationship between β-phase stability and the cooling rate before aging is discussed