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A kind of manufacturing method of non-magnetic cubic texture cu-ni-cr alloy base tape for high temperature superconducting coated conductor

A cu-ni-cr, coated conductor technology, applied in the field of high-temperature superconducting coated conductor metal baseband, can solve the problems of high Ni alloy cost, sharp cubic texture, limited use, etc., to improve oxidation resistance capacity, reduce consumption, and reduce investment cost

Active Publication Date: 2020-05-08
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, high Ni alloys are affected by unfavorable factors such as high cost and limited use.
On the other hand, Cr is a metal with a BCC structure, and a large amount of addition is not conducive to forming a sharp cubic texture in the baseband

Method used

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  • A kind of manufacturing method of non-magnetic cubic texture cu-ni-cr alloy base tape for high temperature superconducting coated conductor
  • A kind of manufacturing method of non-magnetic cubic texture cu-ni-cr alloy base tape for high temperature superconducting coated conductor
  • A kind of manufacturing method of non-magnetic cubic texture cu-ni-cr alloy base tape for high temperature superconducting coated conductor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] According to Table 1, the composition is smelted and cast into billets, forged or hot-rough rolled into slabs, and then hot-rolled to form 1-10mm hot-rolled plates, cold-rolled and annealed in one stage under pure hydrogen, specifically cold-rolled, The annealing process, cubic texture volume fraction and high-temperature oxidation resistance are shown in Table 2. The high-temperature oxidation resistance test temperature is 800°C and the time is 1h.

[0024] Table 1. List of chemical components

[0025] Element Cu Ni Cr A 12 73 15 B 30 56 14 C 47 40 13 D 54 35 11 E 19 72 9 F 58 34 8 G 24 69 7 H 60 25 5

[0026] Table 2. List of cold rolling and one-stage annealing processes

[0027]

Embodiment 2

[0029] According to Table 1, the components are smelted and cast into slabs, forged or hot-rough-rolled into slabs, and then hot-rolled to form 1-10mm hot-rolled sheets, which are cold-rolled with a reduction ratio of 98% and two-stage annealing , see Table 3 for the specific annealing process and cubic texture volume fraction.

[0030] Table 3. List of two-stage annealing processes

[0031]

Embodiment 3

[0033] According to Table 1, the composition is smelted and cast into billets, forged or hot-rough-rolled into slabs, and then hot-rolled to form 1-10mm hot-rolled sheets, cold-rolled at a reduction rate of 96% and annealed in one stage. The annealing temperature was 1040°C, and the annealing time was 120 min. See Table 4 for the specific annealing atmosphere and cubic texture volume fraction.

[0034] Table 4. Annealing atmosphere list

[0035] Element Hot rolled plate thickness / mm Hydrogen ratio / % Nitrogen ratio / % Argon ratio / % Finished product thickness / mm Cubic Texture Fraction / % C 1 10 80 10 0.04 ＞96 D 2 10 90 0 0.08 ＞96 E 4 5 5 90 0.16 ＞96 F 6 30 10 60 0.24 ＞96 G 8 90 5 5 0.32 ＞96 H 3 100 0 0 0.12 ＞96 A 7 0 100 0 0.28 ＞96 B 10 0 0 100 0.4 ＞96 C 6 30 40 30 0.24 ＞96 D 6 15 15 70 0.24 ＞96 E 6 80 20 0 0.24 ＞96

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Abstract

The invention discloses a manufacturing method of a nonmagnetic cube texture Cu-Ni-Cr alloy substrate for a high-temperature superconducting coating conductor and belongs to the technical field of high-temperature superconducting coating conductor metal substrate. The manufacturing method comprises the following steps of smelting and casting raw materials into an ingot or a cast billet; performingforging or hot coarse rolling on the ingot or the cast billet into a plate slab; performing hot rolling to form a hot rolled plate with the thickness being 1-10mm; and performing cold rolling to forma thin plate strip, and finally performing recrystallization annealing, wherein the cold rolling reduction ratio is 95-99 percent; and the cast billet is prepared from the following main components by atomic percentage: 12-60at.% of Cu, 25-73at.% of Ni and 5-15at.% of Cr, except inevitable impurities. Compared with an industrially produced Ni-based alloy substrate for the high-temperature superconducting coating conductor, the Cu-Ni-Cr alloy substrate manufactured by the method has the advantages of nickel conservation, low cost, good high-temperature oxidation resistance, non magnetism in atemperature range of liquid nitrogen and the like in the premise of ensuring to have a sharp cube texture and has wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of high-temperature superconducting coated conductor metal substrates, in particular to a method for manufacturing a non-magnetic cubic texture Cu-Ni-Cr alloy substrate for high-temperature superconducting coated conductors. Background technique [0002] Since the discovery of La-Ba-Cu-O superconducting materials by Müller et al. in 1986, high-temperature superconducting materials have developed rapidly, and the application of a series of rare earth Cu oxide superconductors in the liquid nitrogen temperature region has become a reality. The preparation of high-temperature superconducting coating conductor materials on metal substrates has significant advantages such as high critical current density, low cost, and convenient use, and has become a research hotspot for international practical high-temperature superconducting materials. High-temperature superconducting coated conductors require the metal baseban...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/06C22C19/05C22C30/02C22F1/08C22F1/10C22F1/02
CPCC22C9/06C22C19/058C22C30/02C22F1/02C22F1/08C22F1/10
Inventor 柳金龙沙玉辉张芳左良郭玉强
Owner NORTHEASTERN UNIV LIAONING
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