Non-magnetic cube texture Cu-based alloy composite base band and preparation method thereof

A composite baseband and cubic texture technology, applied in metal rolling, chemical instruments and methods, metal layered products, etc., can solve the problems of low mechanical strength and inability to meet high texture and high strength at the same time, and achieve Improve mechanical strength and ensure non-magnetic effects

Inactive Publication Date: 2010-07-28
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical strength of this baseband is still not high
The metal nickel base belt also appears unable to meet the requirements of high texture and

Method used

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  • Non-magnetic cube texture Cu-based alloy composite base band and preparation method thereof
  • Non-magnetic cube texture Cu-based alloy composite base band and preparation method thereof
  • Non-magnetic cube texture Cu-based alloy composite base band and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The NiW powder (code B powder) with a W atomic percentage of 9% and the CuNi powder (code A powder) with a Ni weight percentage of 40% were subjected to high-energy ball milling respectively, and the ground powder was in the order of A-B-A Layered into the mold; using spark plasma sintering technology, put the mold filled with layered powder into the sintering equipment (SPS-3.20-MV spark plasma sintering equipment made in Japan), and pressurize it under vacuum conditions. Sintering, wherein, the sintering pressure is 30Mpa, the sintering temperature is 800°C, and the holding time is 30min; the sintered composite billet is cold-rolled, the deformation of each pass is 5-15%, and the total deformation is greater than 95%, and the thickness is obtained It is 80um cold-rolled base strip; the cold-rolled base strip is annealed at 850°C for 1h, and the protective atmosphere is Ar / H 2 , to obtain the final product Cu-based alloy composite substrate. The yield strength of the ...

Embodiment 2

[0025] Carry out high-energy ball milling with NiW powder (code name B powder) with a W atomic percentage content of 10% and Ni with a weight percentage content of 40% (code name A powder), and divide the ground powder in the order of A-B-A The layer is placed in a rubber mold, and then the rubber mold filled with powder is put into a cold isostatic press for compression molding, wherein the pressure is 250MPa, and the pressure is maintained for 5min. Subsequently, the formed compact is placed in an Ar / H2 protective atmosphere Sintering at 1000°C for 10h, cold-rolling the sintered composite ingot, the deformation of each pass is 5-15%, the total deformation is greater than 95%, and the thickness of the cold-rolled base strip is 100um; the cold-rolled base strip is at 800°C, Insulation annealing for 1h, the protective atmosphere is Ar / H 2 , to obtain the final product Cu-based alloy composite substrate. The yield strength of the composite base belt is shown in Table 1.

Embodiment 3

[0027] The NiW powder (code name B powder) with a W atomic percentage of 12% and the CuNi powder (code name A powder) with a Ni weight percentage of 40% are respectively subjected to high-energy ball milling, and the ground powder is in the order of A-B-A Layered into the mold; using spark plasma sintering technology, put the mold filled with layered powder into the sintering equipment (SPS-3.20-MV spark plasma sintering equipment made in Japan), and pressurize it under vacuum conditions. Sintering, wherein, the sintering pressure is 50Mpa, the sintering temperature is 850°C, and the time is 30min; the sintered composite ingot is cold-rolled, the deformation of each pass is 5-15%, and the total deformation is greater than 95%, and the obtained thickness is 100um cold-rolled base strip; the cold-rolled base strip is annealed at 800°C for 1 hour, and the protective atmosphere is Ar / H 2 , to obtain the final product Cu-based alloy composite substrate. The yield strength of the c...

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Abstract

The invention discloses a non-magnetic cube texture Cu-based alloy composite base band. The non-magnetic cube texture Cu-based alloy composite base band is prepared by compositing surface layers and a core layer and has the structure of surface layer, core layer and surface layer, wherein each surface layer is copper-nickel alloy in which the weight percentage of nickel is less than 50 percent; and the core layer is nickel-tungsten alloy in which the atomic percentage of tungsten is between 9 and 12 percent. A preparation method by using powder metallurgy comprises the following steps: (1) initial powder mixing and mold filling; (2) compressing and sintering of a composite green compact; (3) deforming and rolling of the sintered composite bullet; and (4) recrystallizing heat treatment for a cold rolling base band. The preparation method improves the mechanical strength of the whole base band and simultaneously ensures the non-magnetic performance of the whole base band; and the composite base band has high yield strength.

Description

technical field [0001] The invention relates to a method for preparing a Cu-based alloy composite substrate with a non-magnetic cubic texture, and belongs to the technical field of high-temperature superconducting coating conductor texture metal substrates. Background technique [0002] Since the discovery of the second-generation high-temperature coated superconductor represented by YBCO, its excellent performance has been favored by people. In the research and development of practical applications, the researchers epitaxially grown it on a polycrystalline ductile metal substrate. Because metallic Cu is easy to form a biaxial cubic texture, in early studies, researchers chose pure Cu as the base material of YBCO strips, but pure Cu has low yield strength and is easy to oxidize, which cannot meet the industrial application of YBCO. In order to solve these shortcomings, Chinese patent CN1408889A (published on April 1, 2003) discloses adding Ni element with a weight percentag...

Claims

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Application Information

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IPC IPC(8): B32B15/01B22F3/16B22F3/14C22F1/02B21B1/22
Inventor 邱火勤索红莉高培阔张腾刘敏马麟高忙忙赵跃
Owner BEIJING UNIV OF TECH
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