Abstract Cr–Mn–Ni ternary alloys have been experimentally studied. Three different isothermal sections have been characterized at 1000 °C, 1100 °C and 1200 °C via Metallography, X-ray diffraction (XRD) and electron probe micro analyzer (EPMA). The results are summarized as follows: (1) the solubility of Ni in the bcc-(Cr) phase was small; (2) the solubility of Ni in bcc-(Cr) phase slightly increases as the temperature increases from 1000 to 1200 °C; (3) the σ-CrMn4 phase with 12 at. % solubility of Ni is observed at 1000 °C; (4) the fcc-(Ni) phase with a large solubility of Cr is observed at 1000, 1100, and 1200 °C, respectively. The experimental information obtained from this study is useful for the thermodynamic assessment of the Cr–Mn–Ni ternary system, and the development of databases in high entropy alloys of the Co–Cr–Fe–Mn–Ni system.

中文翻译：

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Cr-Mn-Ni三元体系中fcc/bcc相平衡的实验研究

摘要 对 Cr-Mn-Ni 三元合金进行了实验研究。通过金相学、X 射线衍射 (XRD) 和电子探针微量分析仪 (EPMA) 在 1000 °C、1100 °C 和 1200 °C 下表征了三种不同的等温截面。结果总结如下：(1)Ni在bcc-(Cr)相中的溶解度小；(2) Ni在bcc-(Cr)相中的溶解度随着温度从1000℃升高到1200℃略有增加；(3) σ-CrMn4 相具有 12 at。在 1000 °C 下观察到 Ni 的溶解度百分比；(4) 分别在 1000、1100 和 1200 °C 下观察到具有较大 Cr 溶解度的 fcc-(Ni) 相。从这项研究中获得的实验信息可用于 Cr-Mn-Ni 三元系统的热力学评估，以及开发 Co-Cr-Fe-Mn-Ni 系统高熵合金数据库。