Herein, the effect of addition of Cu, Fe, and CuFe on microstructure and magnetic properties of equiatomic ternary AlNiCo alloy is reported. This addition of Cu, Fe, and CuFe to AlNiCo results in L12, B2, and mixed α + B2 phases, respectively, during the mechanical alloying (MA) and subsequent annealing process. The low‐temperature magnetic properties show that the addition of nonmagnetic Cu to AlNiCo enhances the coercivity, while Fe enhances the saturation magnetization value. Further from the study of magnetic properties, it is suggested that the phase segregation effects are minimum in MA process compared to melt process. It is also shown that the disorder plays a significant role in controlling the magnetic properties. The observed anomalous magnetic behavior is discussed in terms of modifications in exchange interactions between constituent elements due to chemical and structural disorder.

中文翻译：

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合金元素对机械合金化AlNiCo基高熵合金显微组织和磁性能的影响

本文报道了Cu、Fe和CuFe的添加对等原子三元AlNiCo合金显微组织和磁性能的影响。将 Cu、Fe 和 CuFe 添加到 AlNiCo 中会产生 L12在机械合金化 (MA) 和随后的退火过程中，分别形成 α + B2 相、B2 相和混合 α + B2 相。低温磁性能表明，AlNiCo中添加非磁性Cu增强了矫顽力，而Fe则增强了饱和磁化强度。进一步对磁性能的研究表明，与熔融工艺相比，MA 工艺中的相偏析效应最小。研究还表明，无序在控制磁性能方面发挥着重要作用。观察到的异常磁性行为是根据化学和结构紊乱导致的组成元素之间的交换相互作用的改变来讨论的。