Novel Fe2CoNi(AlSi)x high-entropy alloys with attractive soft magnetic and mechanical properties

The effect of Al and Si on microstructure evolution, mechanical, magnetic properties, and electrical resistivity of non-equimolar Fe2CoNi(AlSi)(x) (x = 0-0.4) high-entropy alloys (HEAs) was studied. This series of Fe2CoNi(AlSi)(x) HEAs has a dual-phase structure and shows an excellent combination of mechanical and soft magnetic properties. In particular, the Fe2CoNi(AlSi)(0.4) HEA exhibits high compressive yield strength sigma(0.2) (887.6 MPa), fracture strain (39%), electrical resistivity rho (84.8 mu omega cm), M-s (155.2 emu/g), and H-c (1.7 Oe). This work may provide a promising method of developing HEAs with an optimal balance of mechanical and soft magnetic properties under the addition of Al and Si suitable for wide-range industrial applications.

Automated summary

The study investigates the effects of Al and Si on the microstructure evolution, mechanical, magnetic properties, and electrical resistivity of non-equimolar Fe2CoNi(AlSi)(x) high-entropy alloys. It was found that the addition of Al and Si can enhance the alloy's mechanical and soft magnetic properties, with Fe2CoNi(AlSi)(0.4) showing excellent performance. This research provides valuable insights for developing new high-entropy alloys with optimal balance of properties for industrial applications.