Method for preparing high-strength cubic textured metal base belt

Abstract

The invention relates to a method for preparing a high-strength cubic textured metal base belt. The method comprises the steps of: (1) alloy smelting and hot rolling: obtaining an alloy ingot with thecomponents of 7-9at.% of Ni, 2at.% of Cr, 3at.% of Mn and the rest of Fe by a smelting method, forging into a square billet which is 70mm-90mm thick at a high temperature, and performing hot rollingto form a hot rolled sheet which is 19mm-21mm thick, wherein the process includes heat preservation for 25-35 minutes at 1310-1330 DEG C and five passes, and after the hot rolling of the last pass, the coiling temperature is 700-730 DEG C; (2) cold rolling and intermediate annealing of the hot rolled sheet: polishing and descaling the surface of the hot rolled sheet and then performing the first cold rolling with the deformation amount of 70%-80%, and then performing annealing, wherein the process includes heat preservation for 1-2 minutes at 600-650 DEG C; performing the second cold rolling with the deformation amount of 70%-80%, and then performing annealing, wherein the process includes heat preservation for 1-2 minutes at 600-650 DEG C; and performing the third cold rolling with the deformation amount of 80%-90%; and (3) recrystallizing an alloy belt material: performing recrystallizing and annealing on the cold rolled belt material, wherein the process includes the annealing manner of charging into the furnace after the temperature is reached, and heat preservation for 2 to 5 minutes at 1090-1110 DEG C, and the annealing atmosphere is pure hydrogen. The metal base belt according to the invention has a high strength and a strong cubic texture.

Description

Technical field [0001] The invention relates to a method for preparing a high-temperature coated superconductor tape reinforced texture metal base tape, in particular to a method for preparing a high-strength cubic texture metal base tape. Background technique [0002] The second-generation high-temperature coated superconducting tape is mainly composed of a tough metal substrate, a transition layer and a superconducting layer. The transition layer and superconducting layer film are epitaxially deposited on the metal substrate with a strong cubic texture to be a coated superconducting tape One of the preparation routes of the material. [0003] At present, the nickel-tungsten alloy base tape is the most studied alloy material. Among them, the Ni-5at.% W alloy base tape is easy to obtain a strong cubic texture, but its yield strength at room temperature is low, and it is ferromagnetic in the liquid nitrogen temperature zone. Although Ni-5at.%W alloy base tapes have been commerciall...

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Problems solved by technology

[0003] At present, the nickel-tungsten alloy base band is the most researched alloy material, and the Ni-5at.%W alloy base band is easy to obtain a strong cubic texture, but its yield strength at room temperature is low, and it has ferromagnetism in the liquid nitrogen temperature region

Although the Ni-5at.% W alloy base strip has been commercially produced and applied in the preparation of superconducting strips, it still cannot meet the needs of high-performance superconducting strips

Although its mechanical properties can be improved by increasing the W content, it is difficult to obtain a strong cubic texture; copper-nickel alloys are easy to form a strong cubic texture, but their yield strength is too low to be of practical value

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