Zhang W, Miao H, Li Y, et al. Journal of Alloys and Compounds, 2017, 707: 57-62.

Abstract:

Substitution of Co and Ni for Fe in an Fe₇₅P₁₀C₁₀B₅ metallic glass effectively increases the stability of supercooled liquid and glass-forming ability. The bulk metallic glasses with large supercooled liquid region (ΔT_x) exceeding 50 K and the critical sample diameter (d_c) of over 1 mm were obtained in a wide composition range from 30 to 60 at.% Fe, 0 to 45 at.% Co and 0 to 40 at.% Ni in the (Fe, Co, Ni)₇₅P₁₀C₁₀B₅ alloy system by copper mold casting. An Fe₄₀Co₂₀Ni₁₅P₁₀C₁₀B₅ alloy shows maximum d_c of 2.5 mm,largest ΔT_x of 60 K, low glass transition temperature of 675 K, low viscosity on the order of 10⁸-10⁹Pa s in the supercooled liquid state, high compressive yield strength of 2860 MPa with a distinct plastic strain, and good soft magnetic properties, i.e., rather high saturation magnetization of 1.13 T and low coerciveforce of 3.8 A/m. The nano-scale Fe₄₀Co₂₀Ni₁₅P₁₀C₁₀B₅ glassy patterns were precisely formed by imprinting, indicating its good thermoplastic formability.

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