Preparation method of non-magnetic high-strength texture Ni-W alloy baseband

A high-strength, non-magnetic technology, applied in the field of preparation of non-magnetic, high-strength textured Ni-W alloy base strips, to avoid strip breakage, increase costs, and eliminate edge cracks

Inactive Publication Date: 2014-07-23
HENAN NORMAL UNIV
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  • Application Information

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Problems solved by technology

Although the 100-meter-level Ni-5at.%W alloy base strip can be commercially produced, the Ni-5at.%W alloy base strip still has ferromagnetism in the liquid nitrogen temperature range, and the mechanical strength needs to be improved, which will limit the coating. The further wide application of superconductors, studies have shown that with the increase of W atom content, the mechanical strength of nickel-tungsten alloy increases, and the Curie temperature decreases. When th

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  • Preparation method of non-magnetic high-strength texture Ni-W alloy baseband
  • Preparation method of non-magnetic high-strength texture Ni-W alloy baseband

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[0022] Example 1

[0023] The nickel and tungsten blocks with a purity of 99.99% are proportioned according to the mole percentage of tungsten as 9.6%, and the proportioned mixed materials are smelted in a vacuum induction melting furnace to obtain nickel-tungsten alloy ingots. After holding the nickel-tungsten alloy ingot at 1200℃ for 2.5h, hot forging a billet with a length of 400mm×25mm×25mm in width×thickness of 400mm×25mm×25mm. After hot forging, the forging billet is trimmed to remove oxide scale, and then kept at 1200℃ for 5h After hot rolling, the deformation of the pass is 15%-18%, and a hot-rolled billet with a thickness of 12mm is obtained; the hot-rolled nickel-tungsten alloy is subjected to one cold rolling with a deformation of 15%, and then Shot peening is used to remove the oxide scale on the surface; the nickel-tungsten alloy after removing the oxide scale is warm-rolled. The specific process parameters are: rolling at 480℃ for 1.5h, the deformation of pass is 3%...

Example Embodiment

[0024] Example 2

[0025] The nickel and tungsten blocks with a purity of 99.99% are proportioned according to the mole percentage of tungsten as 9.6%, and the proportioned mixed materials are smelted in a vacuum induction melting furnace to obtain nickel-tungsten alloy ingots. After holding the nickel-tungsten alloy ingot at 1200℃ for 2.5h, hot forging a billet with a length of 400mm×25mm×25mm in width×thickness of 400mm×25mm×25mm. After hot forging, the forging billet is trimmed to remove oxide scale, and then kept at 1200℃ for 5h After hot rolling, the deformation of the pass is 15%-18% to obtain a hot-rolled billet with a thickness of 14mm; the hot-rolled nickel-tungsten alloy is subjected to one cold rolling with a deformation of 15%, and then Shot peening is used to remove the oxide scale on the surface; the nickel-tungsten alloy after removing the oxide scale is warm-rolled. The specific process parameters are: rolling at 480℃ for 1.5h, the deformation of pass is 3%-15%, ...

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Abstract

The invention discloses a preparation method of a non-magnetic high-strength texture Ni-W alloy baseband. The preparation method comprises the following steps: acquiring an Ni-9.6 at.% W alloy cast ingot by adopting vacuum induction smelting, carrying out hot forging and hot rolling on the cast ingot, and removing oxide skin positioned on the surface of a hot rolling blank by combining one-pass cold rolling with shot blast treatment; and successfully acquiring the non-magnetic high-strength strong-cube texture hectometre-level Ni-9.6 at.% W alloy baseband by carrying out warm rolling and the cold rolling with a certain deformation amount, introducing stress relief annealing twice in a cold rolling process, longitudinally shearing the cracked edge of a band in the cold rolling process and finally carrying out continuous recrystallizing heat treatment. The preparation method disclosed by the invention lays a good foundation for realizing the industrialized production of second-generation high-temperature superconductors.

Description

technical field [0001] The invention relates to a method for preparing a non-magnetic, high-strength textured Ni-W alloy base band, and belongs to the technical field of preparing a textured metal base band for high-temperature coating conductor industrialization. Background technique [0002] Compared with the first-generation high-temperature superconducting materials, the second-generation high-temperature superconducting tape represented by yttrium barium copper oxide (YBCO) has the advantages of higher critical current density, high irreversible field and low AC loss, so it has become the current One of the superconducting materials with the most possible industrial applications. In the preparation of the second generation of high-temperature coated superconductors, the RABiTS technology, that is, the calender-assisted biaxial textured substrate preparation technology, is a commonly used substrate preparation technology. For the textured substrate for YBCO coated conduc...

Claims

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Application Information

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IPC IPC(8): C22C19/03C22C1/02C22F1/10B23P15/00
Inventor 刘志勇张娜宋桂林唐亚楠杨枫韩梦媛常方高
Owner HENAN NORMAL UNIV
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