Preparation method of nickel-tungsten composite base band with cubic texture

A composite base tape and cubic texture technology, applied in the direction of metal rolling, can solve the problems of low mechanical strength, the comprehensive performance of nickel-tungsten alloy is difficult to be effectively taken into account, etc., and achieve the effect of high mechanical properties

Inactive Publication Date: 2020-05-12
HENAN NORMAL UNIV
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  • Application Information

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Problems solved by technology

At present, Ni-5at.%W (Ni5W) alloy materials are easy to obtain strong cubic texture, but due to low mechanical strength and high ferromagnetism in the liquid nitrogen temperature range, it is difficult to further increase its strength and reduce ferromagnetism , when the atomic percentage of W exceeds 9%, the base band has no ferromagnetism in the liquid nitrogen temperature region and has high mechanical properties, but it is difficult to form a strong cubic textu

Method used

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  • Preparation method of nickel-tungsten composite base band with cubic texture
  • Preparation method of nickel-tungsten composite base band with cubic texture
  • Preparation method of nickel-tungsten composite base band with cubic texture

Examples

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Example Embodiment

[0016] Example 1

[0017] Using nickel blocks with a purity of 99.99% or more and tungsten blocks with a purity of 99.99% or more as raw materials, the nickel-tungsten alloy ingot is obtained by smelting according to the proportion of W atomic percentage of 10% and the balance being Ni. , The oxygen content in the nickel-tungsten alloy ingot is controlled at 25ppm. The nickel-tungsten alloy ingot is heated to 1230℃ for 30 minutes and then hot rolled, the total deformation is 60%, and the final rolling temperature is controlled above 980℃. The surface of the Ni-10at.%W alloy slab is acid washed to remove the oxide scale, and then the Ni-5at.%W alloy with a thickness of 10μm is electroplated on the lower surface of the hot-rolled plate to obtain Ni-5at.%W / Ni-10at.%W / Ni-5at.%W layered composite plate; the obtained layered composite plate is subjected to diffusion annealing treatment, the specific process: heat preservation at 980°C for 30 minutes, then cold-rolled and deformed to o...

Example Embodiment

[0018] Example 2

[0019] Using nickel blocks with a purity of 99.99% or more and tungsten blocks with a purity of 99.99% or more as raw materials, the nickel-tungsten alloy ingot is obtained by smelting according to the proportion of W atomic percentage of 10% and the balance being Ni. , The oxygen content in the nickel-tungsten alloy ingot is controlled at 20ppm. The nickel-tungsten alloy ingot is heated to 1370℃ for 30 minutes and then hot rolled, the total deformation is 75%, and the final rolling temperature is controlled above 1000℃; The surface of the Ni-10at.%W alloy plate is polished and the oxide scale is electroplated with 10μm thick Ni-5at.%W alloy to obtain Ni-5at.%W / Ni-10at.%W / Ni-5at.%W layered Composite plate; the obtained layered composite plate is subjected to diffusion annealing treatment, the specific process: 1050 ℃ heat preservation for 30 minutes, and then cold-rolled deformation to obtain a cold-rolled composite strip, the total deformation is 98%, the defo...

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Abstract

The invention discloses a preparation method of a nickel-tungsten composite base band with cubic texture. The composite band is of a layered structure and is composed of three layers of alloys, the inner layer and the outer layer are made of Ni-5at.% W alloy, the core layer is made of Ni-10at.% W alloy, an initial core layer material is obtained by hot rolling through a smelting method, the outerlayer is formed by deposition through an electroplating method, the final nickel-tungsten composite base band with the strong cubic texture is obtained through diffusion annealing, subsequent cold rolling deformation and recrystallization annealing, and the nickel-tungsten composite base band is free of ferromagnetism in a liquid nitrogen temperature area and has high yield strength. According tothe preparation method, through the design idea of the composite material, the high-performance nickel-tungsten alloy base band material for the second-generation coating superconducting strip is finally developed and obtained.

Description

technical field [0001] The invention relates to a method for preparing a nickel-tungsten composite substrate with a cubic texture, and belongs to the technical field of preparing textured metal substrates for high-temperature coating superconducting strips. Background technique [0002] High-temperature superconducting materials have large commercial markets in fields such as electric power, transportation, and military affairs. The second-generation high-temperature superconductor represented by YBCO has high current-carrying capacity and low AC loss. It is mainly composed of a metal baseband, a transition layer and a YBCO superconducting layer. The method of epitaxially growing the transition layer requires the metal baseband to have a strong cubic Texture, in addition, in the industrial production process, the base tape also needs to have high yield strength. At the same time, expanding the application field of superconducting tape requires that the base material has no f...

Claims

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Application Information

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IPC IPC(8): C25D3/56C25D7/06B21B1/38C22F1/10
CPCB21B1/38B21B2001/386C22F1/10C25D3/562C25D7/0614
Inventor 张喜林黎文峰王永永刘志勇
Owner HENAN NORMAL UNIV
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