Abstract In an equiatomic CrCuFeNiZn multicomponent alloy, fine powders of nanocrystalline Y2O3 (1 wt %) is dispersed and mechanically alloyed (MA) by high energy ball milling technique. The phase analysis by X-ray Diffraction (XRD) reveals that milling for about 30 h leads to the formation of ‘FCC’ and ‘BCC’ as stable phases in addition to minor amount of YZn5 intermetallic phase with hexagonal crystal structure in the aggregate. The crystallite size as measured from the XRD analysis for the 30 h milled powder was found to be 17.2 nm and it well agrees with that observed in Transmission electron microscope (TEM) analysis. SEM-EDS analysis further confirms the homogeneous distribution of the constituting elements in the as-fabricated alloy aggregate. The present investigation offers a roadmap for using yttria doped CrCuFeNiZn multicomponent alloy as a potential candidate material used as core components in nuclear reactors.

中文翻译：

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机械合金化制备的新型 Y2O3 分散 CrCuFeNiZn 纳米晶多元合金的相演变

摘要 在等原子 CrCuFeNiZn 多组分合金中，纳米晶 Y2O3 (1 wt %) 的细粉通过高能球磨技术分散和机械合金化 (MA)。X 射线衍射 (XRD) 的相分析表明，研磨约 30 小时导致形成“FCC”和“BCC”作为稳定相，此外还有少量具有六方晶体结构的 YZn5 金属间相。从 30 小时研磨粉末的 XRD 分析中测得的微晶尺寸为 17.2 nm，这与透射电子显微镜 (TEM) 分析中观察到的结果非常吻合。SEM-EDS 分析进一步证实了构成元素在制造的合金骨料中的均匀分布。