In this study, soft magnetic FeCoNiCrAl high-entropy alloys (HEAs) were synthesised by high-energy ball milling using Fe, Co, Ni, Cr and Al powders as raw materials. The phase evolution was detected by X-ray diffraction, and the results showed that only 12 h were required to convert all the raw materials into the HEAs nanoparticles. It was shown that the prepared particles formed aggregates of approximately 1 μm in size. Furthermore, the influence of the amounts of Cr and Al on the formation process, magnetic properties and microwave absorption of the FeCoNiCr_xAl_2-x alloys was investigated. The saturation magnetisation reached 80.43 emu g⁻¹ when x = 1, and the minimum calculated reflection loss reached 41.99 dB at 2.40 GHz with a layer thickness of 4.2 mm when x = 1.5.

在本研究中，以 Fe、Co、Ni、Cr 和 Al 粉末为原料，通过高能球磨合成了软磁 FeCoNiCrAl 高熵合金 (HEAs)。通过 X 射线衍射检测相演变，结果表明，将所有原材料转化为 HEAs 纳米粒子只需要 12 小时。结果表明，制备的颗粒形成了大约 1 μm 的聚集体。此外，研究了Cr和Al的量对FeCoNiCr _x Al _{2- x}合金的形成过程、磁性能和微波吸收的影响。当x 时，饱和磁化强度达到 80.43 emu g ^-1= 1，当x  = 1.5时，计算的最小反射损耗在 2.40 GHz 时达到 41.99 dB，层厚为 4.2 mm 。