A preparation method of ultra-high strength textured nickel-based alloy substrate

Abstract

A method for preparing an ultra-high-strength textured nickel-based alloy base strip, comprising the steps of: (1) alloy melting and hot rolling: adopting a melting method to obtain a tungsten atomic percentage of 13% to 15% and a carbon atomic percentage of 80ppm ~90ppm nickel-based alloy ingot, hot rolled to 5.6mm~6.0mm, hot rolling process: start rolling temperature 1295℃~1310℃, finish rolling temperature 1100℃~1130℃; (2) solid solution of alloy billet Treatment: Solution treatment of the hot-rolled billet, heat preservation at 1380°C-1400°C for 26min-34min; (3) Cold rolling and heat treatment: After descaling the solution-treated hot-rolled sheet, cold-roll it to 100μm-120μm. Heat treatment, the process is: heating at a heating rate of 1.7°C / min to 2.4°C / min to 690°C to 710°C for 1.5min to 3.5min, then cooling with the furnace, and holding at 1350°C to 1380°C for 7 to 9 hours Heat treatment in the furnace, air cooling after heat preservation is completed, heat treatment uses a protective atmosphere in addition to air cooling. The nickel base alloy with high tungsten content of the invention not only has no ferromagnetism in the liquid nitrogen temperature zone, but also has high mechanical properties.

Description

Technical field[0001]The present invention relates to a reinforced high-temperature coating superconductor fabric a metal base strip, and more particularly to the preparation method of iron-free magnetic ultra high intensity texture nickel-based alloy baseband.Background technique[0002]The second generation of high-temperature superconducting materials have a wide range of application prospects in the fields of electricity, transportation and military, of which the second generation coating superconducting strip is a multilayer composite structure, from the textured metal baseband and transition layer and superconducting layer. Composition, as a base material of the coating superconducting strip, there is a need for high yield strength, ferromagnetic and strong cubic texture.[0003]Ni-5at.% W alloy baseband is the most mature alloy material, but its yield strength is low, and has magnetic properties, not perfect baseband material, in order to improve mechanical properties and reduce ...

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Problems solved by technology

[0003] The Ni-5at.% W alloy base band is the most mature alloy material, but its yield strength is low and it has magnetic properties, so it is not a perfect base band material. In order to improve the mechanical properties and reduce the ferromagnetism, the composite base band can effectively solve these two problems. This is a problem, but the preparation cost of the composite baseband is too high, the efficiency is low, and it is not suitable for mass production, resulting in the high-performance nickel-tungsten alloy baseband still not being commercially produced.

From the perspective of preparation cost, the single-layer nickel-tungsten alloy substrate still has great research value. The nickel-tungsten alloy with high W content has the characteristics of high strength and no ferromagnetism, but it is difficult to obtain strong cubic texture by traditional methods. Therefore, How to obtain nickel-tungsten alloy baseband with high tungsten content and strong cubic texture has far-reaching practical value

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