(Co80Fe20)_3V 是一种长程有序金属间化合物,有作为高温结构材料应用的前景。本文运用 X 射线衍射方法和透射电子衍射方法对此种材料的淬火态和时效处理后的晶体结构进行了观察和分析。本材料在淬火态具有面心立方结构,而在时效处理态则为 Cu3Au 1型(Ll_2型)超结构。在有序化过程中,有序畴是逐渐长大的,反相畴界呈现出各向同性。 (Co80Fe20) _3V is a long-range, ordered intermetallic compound that has promise as a high temperature structural material. In this paper, X-ray diffraction and transmission electron diffraction methods were used to observe and analyze the quenched and aged crystal structure of this material. The material has a face-centered cubic structure in the quenched state, while the Cu3Au1-type (Ll2-type) superstructure in the aged state. In the process of ordering, ordered domains are gradually grown, anti-phase boundaries appear isotropic.