Production of Zr-based amorphous wires by rotating disk casting method

Continuous amorphous wires with high strength and good ductility have been produced for the Zr₅₅Al₁₀Ni₅Cu₃₀ and Zr₅₅Ti₅Al₁₀Ni₁₀Cu₂₀ alloys by a rotating disk casting technique. The rotating disk, which is made of copper, has a semicircular groove on its upside surface. The amorphous wires have a nearly circular cross-section, smooth peripheral surfaces and diameters in the range from 0.5 to 1.5mm. The amorphous alloy wires have good bending ductility. The maximum tensile strength, σ_f, is 1600 MPa for Zr₅₅Al₁₀Ni₅Cu₃₀ amorphous wire and 1900 for Zr₅₅Ti₅Al₁₀Ni₁₀Cu₂₀ amorphous wire, respectively. The success of forming amorphous alloy wires in a continuously long form by the present casting method is important for the further extension of application fields of amorphous alloys.