Abstract：The effect of heat treatment process parameters on crystallization behavior, electrical resistivity (ρ) and soft magnetic properties of Fe84B6P6C3Cu1 amorphous alloy ribbon was investigated. It was discovered that when annealing temperature is between the onset temperature of first crystallization peak (Tx1) and second one (Tx2), high annealing temperature is conducive to promote the nucleation and hinder the growth of α-Fe grains, which is helpful to reduce the coercivity (Hc) and elevate the Bs and effective permeability (μe). The ρ of Fe84B6P6C3Cu1 alloy decrease slightly then decreases rapidly，and finally increases rapidly with the increase of annealing temperature. It was found that the sensitivity of soft magnetic properties to annealing time enhances with the increase of annealing temperature, i. e., high annealing temperature corresponds to short optimal annealing time. Generally, Fe84B6P6C3Cu1 nanocrystalline alloy shows excellent comprehensive soft magnetic properties when annealing at 420 ℃ for 30 min. Its Bs，Hc and μe are 1.81 T, 6.7 A/m and 8600, respectively.
2022, Vol. 29 