Preparation method for non-ferromagnetism cubic-texture nickel-tungsten alloy base band

A nickel-tungsten alloy, cubic texture technology, applied in metal material coating process, solid-state diffusion coating, coating and other directions, can solve the problems of not being a high-performance superconducting tape, difficult to prepare, and low yield strength

Inactive Publication Date: 2017-05-24
ANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the cubic texture Ni-5at.%W alloy substrate used for coated superconducting strips has been commercially produced, but because it has ferromagnetism (Tc=335K) in the liquid nitrogen temperature region, it will be difficult to use in alternating current applications. Causes AC loss, and its yield strength is low, so it is not the material of choice for high-performance superconducting tapes
[0004] Studies have shown that a

Method used

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  • Preparation method for non-ferromagnetism cubic-texture nickel-tungsten alloy base band
  • Preparation method for non-ferromagnetism cubic-texture nickel-tungsten alloy base band
  • Preparation method for non-ferromagnetism cubic-texture nickel-tungsten alloy base band

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Embodiment 1

[0030] The steps of the preparation method of the embodiment of the present invention 1 are as follows:

[0031] The nickel block and the tungsten block are proportioned according to the atomic percentage of tungsten being 5%, and the mixed material after the proportioning is placed in a vacuum induction melting furnace for melting to obtain a Ni-5at.%W alloy ingot, and the obtained Ni-5at.%W alloy ingots are forged and hot-rolled to obtain initial alloy ingots;

[0032] Using mechanical polishing, the surface of the initial alloy ingot obtained above is polished, the scale is removed, polished to a high finish, and then cold-rolled to a thickness of 50 μm, with a total deformation of 90%, to obtain a nickel-tungsten alloy cold-rolled base strip;

[0033] The obtained cold-rolled alloy base strip is subjected to recrystallization heat treatment to obtain a nickel-tungsten alloy base strip with strong cubic texture. The recrystallization heat treatment process is: 1000°C for 0....

Embodiment 2

[0037] The steps of the preparation method of the embodiment of the present invention 2 are as follows:

[0038] The nickel block and the tungsten block are proportioned according to the atomic percentage of tungsten being 5%, and the mixed material after the proportioning is placed in a vacuum induction melting furnace for melting to obtain a Ni-5at.%W alloy ingot, and the obtained Ni-5at.%W alloy ingots are forged and hot-rolled to obtain initial alloy ingots;

[0039] Using mechanical polishing, carry out surface polishing on the initial alloy billet obtained above, remove scale, polish to high finish, then cold-roll to 70 μ m thick, total deformation is 90%, obtain nickel-tungsten alloy cold-rolled base strip;

[0040] The obtained cold-rolled alloy base strip is subjected to recrystallization heat treatment to obtain a nickel-tungsten alloy base strip with strong cubic texture. The recrystallization heat treatment process is: 1050°C for 0.5 hours, and the heating rate is ...

Embodiment 3

[0044] The steps of the preparation method of the embodiment of the present invention 3 are as follows:

[0045] The nickel block and the tungsten block are proportioned according to the atomic percentage of tungsten being 5%, and the mixed material after the proportioning is placed in a vacuum induction melting furnace for melting to obtain a Ni-5at.%W alloy ingot, and the obtained Ni-5at.%W alloy ingots are forged and hot-rolled to obtain initial alloy ingots;

[0046] Using mechanical polishing, the surface of the initial alloy ingot obtained above is polished, the scale is removed, polished to a high degree of smoothness, and then cold rolled to a thickness of 75 μm, with a total deformation of 90%, to obtain a nickel-tungsten alloy cold-rolled base strip;

[0047] The obtained cold-rolled alloy base strip is subjected to recrystallization heat treatment to obtain a nickel-tungsten alloy base strip with strong cubic texture. The recrystallization heat treatment process is:...

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Abstract

The invention discloses a preparation method for a non-ferromagnetism cubic-texture nickel-tungsten alloy base band. The method includes the steps that a nickel-tungsten alloy cast ingot is prepared by adopting a vacuum induction melting method, and an initial alloy blank ingot is obtained after forging and hot rolling; surface polishing is conducted on the obtained initial alloy blank ingot by utilizing mechanical polishing, oxide skin is removed, and then cold rolling is carried out till the initial alloy blank ingot is 50-75 micrometers thick and the total deformation is 90-93%, so that a nickel-tungsten alloy cold-rolled base band is obtained; and the obtained nickel-tungsten alloy cold-rolled base band is subjected to recrystallization heat treatment to obtain the nickel-tungsten alloy base band with the high cubic texture. The alloy base band has no ferromagnetism overall and is high in strength, and the requirements for preparing high-performance coating superconductive bands can be met.

Description

technical field [0001] The invention relates to a preparation method of a composite substrate, in particular to a preparation method of a nickel-tungsten alloy substrate. Background technique [0002] With the improvement of the performance of Yttrium Barium Copper Oxide (YBCO) high-temperature superconducting materials and the continuous progress of refrigeration technology, as well as its inherent physical properties, YBCO coated superconductors are used in superconducting cables, superconducting motors, etc. field has potential application value. For YBCO-coated superconducting tapes prepared by RABiTS technology, that is, calendering-assisted biaxial texture technology, obtaining a metal base tape with strong cubic texture, no ferromagnetism, and high yield strength is the key to preparing high-performance coated superconducting tapes. The key to material. [0003] At present, the cubic texture Ni-5at.%W alloy substrate used for coated superconducting tapes has been co...

Claims

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Application Information

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IPC IPC(8): C22C19/03C23C10/08C23C10/60C22F1/10
CPCC22C19/03C22F1/10C23C10/08C23C10/60
Inventor 杨癸张静陈兵孙志富
Owner ANYANG NORMAL UNIV
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