Strong-strength strong cubic texture layered composite base strip and preparing method thereof

Abstract

The invention discloses a preparing method of a strong-strength strong cubic texture layered composite base strip. The preparing method comprises the steps that (1) alloy smelting and hot rolling arecarried out, wherein continuous casting is carried out to obtain a nickel tungsten alloy ingot with the tungsten atomic percentage composition being 12% to 14%, the thickness is 500 mm to 700 mm, rough rolling is carried out until the thickness is 50 mm to 70 mm, according to the process, heat preservation at 1290 DEG C is carried out for 20 minutes, 5-gate machining is carried out, heat preservation is carried out at 1250 DEG C for 20 min, finishing rolling is carried out until the thickness is 12 mm, 3-gate machining is carried out, and water quenching is immediately carried out after the first-gate machining; (2) cold rolling is carried out on a hot rolled sheet, wherein the surface is polished and descaled to be subjected to cold rolling until the thickness is 90 microns to 100 microns; (3) deposition of an alloy film is carried out, wherein magnetron sputtering is carried out on the strip surface for deposition of a Ti-V-Cr-Zr alloy film with the thickness being 30 n, the atomic percentage composition of each element is 25%, the purity is more than 99.9%, magnetron sputtering is carried out on the surface of the film for deposition of a Cu-Ni-W alloy film, the atomic percentage composition of Ni is 35%, the atomic percentage composition of W is 1%-3%, the thickness is 10 nm to 30 nm, and the two films are both subjected to single-face deposition; and (4) heat treatment ofthe alloy film is carried out, wherein according to the heat treatment process of a composite strip, the temperature-reaching furnace-entering annealing manner is adopted, heat preservation is carriedout at 1200 DEG C for 1 min to 3 min, and pure hydrogen annealing is carried out. By means of the preparing method, a high strength layered composite base strip is obtained.

Description

technical field [0001] The invention relates to a textured metal base belt for strengthening a high-temperature coating superconductor, in particular to a strength-textured composite base belt and a preparation method thereof. Background technique [0002] The preparation of biaxially textured metal substrates with high strength and no ferromagnetism is the basis for obtaining high-performance coated superconducting tapes. [0003] Epitaxial deposition of transition layer and superconducting layer on metal substrate with strong cubic texture is one of the preparation routes of coated superconducting tape. At present, the Ni-W alloy base band is the most studied alloy material, and the Ni-5at.%W alloy base band is easy to obtain a strong cubic texture, but its yield strength is low and it has ferromagnetic properties. Although it has been commercially produced, However, it still cannot meet the requirements of more application fields. Increasing the W atom content can reduc...

AI Technical Summary

Problems solved by technology

At present, the Ni-W alloy base band is the most studied alloy material, and the Ni-5at.%W alloy base band is easy to obtain a strong cubic texture, but its yield strength is low and it has ferromagnetic properties. Although it has been commercially produced, However, it still cannot meet the requirements of more application fields

Increasing the W atom content can reduce ferromagnetism and improve its mechanical properties, but the cubic texture is difficult to form. A strong cubic texture can be formed in the Ni-9at.% W alloy base strip by adding multiple recovery anneals during cold rolling or using warm rolling , but the multi-pass annealing between cold rolling increases the production cost, the efficiency is low, and it is difficult to realize industrial production in warm rolling

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