Abstract
The effect of cooling rate on phase structure and magnetic properties of the Fe26.7Co28.5Ni28.5Si4.6B8.7P3 high entropy alloy (HEA) was investigated. The HEA forms into amorphous phase by melt spinning method at high cooling rate and FCC solid solution phase at low cooling rate. The soft magnetic properties of the amorphous phase (saturation magnetization Bs of 1.07T and coercivity Hc of 4A/m) are better than that of the solid solution phase (Bs of 1.0T and Hc of 168A/m). In order to study the phase evolution of the present HEA, anneal experiments were conducted. It is found that crystallization products of amorphous phase are solid solution phase which constitute much of FCC and a small amount of BCC. BCC phase transforms into FCC phase, and then into BCC phase with the increase of annealing temperature.
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