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同时强化合金的力学性能和磁性能是软磁材料的理想化制备策略.通过制备非等原子比的Al19Co20Fe20Ni41共晶高熵合金,研究硼元素合金化对显微组织演变、相形成、力学性能和软磁性能的影响.随着B含量的增加,(Al19Co20Fe20Ni41)100-xBx合金的显微组织从最初的层片状共晶组织(x=0)转变为离异共晶组织(x>0.6).细小的硼化物从晶间相中析出(x≥0.6).合金的硬度从HV 328.66增加到HV 436.34.压缩力学性能测试结果显示合金发生从塑性材料向脆性材料的转变.Al19Co20Fe20Ni41合金具有良好的软磁性能,微量的B添加对其软磁性能的影响很微弱.当用作软磁性材料时,合金电阻率的增加可以有效地减少涡流损耗.“,”The simultaneous strengthening of mechanical and magnetic properties is an ideal fabrication strategy for soft-magnetic materials. A non-equiatomic Al19Co20Fe20Ni41 eutectic high-entropy alloy was prepared to investigate the alloying effect of B on the microstructure evolution, phase formation, mechanical and soft-magnetic properties. With the increase in B content, the microstructures of (Al19Co20Fe20Ni41)100-xBx alloys transformed from the initial lamellar eutectic structure (x=0) to the divorced eutectic structure (x>0.6). Fine borides precipitated in the intergranular phase (x≥0.6). The hardness of alloys increased from HV 328.66 to HV 436.34 and the compression mechanical performance displayed a transition from plastic material to brittle material. The Al19Co20Fe20Ni41 alloy possesses good soft-magnetic properties, and the minor B addition has little effect on it. Increasing the resistivity can effectively reduce the eddy current loss when used as a soft-magnetic material.