Abstract: A Fe-based amorphous alloy containing subnanometer-scale ordered clusters, and a preparation method and a nanocrystalline alloy derivative thereof. The composition expression of the Fe-based amorphous alloy is FeaSibBc(CudXe)MfM?g, and X is at least one of Ti, Zr and Hf, M is at least one of V, Ta and Nb, and M? at least one of Co, Ni, C, P, Ge, Cr, Mn, W, Zn, Sn, Sb and Mo; a, b, c, d, e, f and g respectively represent the atomic percent (percentage of the number of atoms) of the corresponding element, and satisfy: 74?a?82, 8?b?15, 4?c?10, 0.5?d?1.2, 0.4?e?1.8, 1?f?3.5, 0?g?1, 0.8?e/d?1.5 and a+b+c+d+e+f+g=100; the Fe-based amorphous alloy is a composite material composed of an amorphous alloy matrix with atoms arranged in complete disorder and ordered atomic clusters having the size ranging from 0.5 nm to 2 nm uniformly dispersed and distributed in the matrix.

Abstract: An alloy composition, a Fe-based nano-crystalline alloy and a manufacturing method thereof, and a magnetic component are disclosed. The expression of the alloy composition is FeaV?BbSicPxCyCuz and 79?a?91 at %, 5?b?13 at %, 0?c?8 at %, 1?x?8 at %, 0?y?5 at %, 0.4?z?1.4 at %, 0<?<5 at % and 0.08?z/x?0.8(at % is atomic percent). The Fe-based nano-crystalline alloy is manufactured by subjecting the alloy composition to crystallization heat treatment. Even if the heating speed upon crystallization heat treatment is slow, or there is a deviation in the temperature reached, a Fe-based nano-crystalline alloy with high saturation magnetic induction intensity and excellent soft magnetic property can still be easily obtained from the alloy ingredients of the present invention. Moreover, the present invention provides a magnetic component manufactured using the Fe-based nano-crystalline alloy.