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Nickel-based alloy composite substrate and manufacturing method thereof

A composite baseband and base alloy technology, which is applied in metal rolling and other directions, can solve the problems of complex preparation process and high production cost, and achieve the effect of high mechanical strength and low magnetism

Inactive Publication Date: 2015-05-20
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a brand-new method for preparing Ni-based alloy composite base strips. Through this simple and convenient direct powder rolling method, the problems of complex preparation process and high production cost in the existing base strip preparation technology are solved. Lay a good foundation for industrial mass production of NiW alloy strips with low magnetic properties and strong biaxial cubic texture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The weighed 265g Ni powder and 35g W powder were mixed into quantitative NiW powder (code A) by long-time ball milling, and the weighed 281g Ni powder and 119g W powder were mixed into quantitative NiW powder by long-time ball milling ( code B); then the above-mentioned powders are directly powder-rolled by a powder rolling mill; 2 Sintering under the protective atmosphere of mixed gas for 4 hours, the sintering temperature is 1300 ℃, and the initial billet is obtained; the sintered billet is cold-rolled, the deformation amount of each pass is 5%, the total deformation amount is 98%, and the final thickness is about 100 μm cold-rolled base strip; the cold-rolled base strip was annealed at 1200° C. for 1 h under a hydrogen burning protective atmosphere to obtain the final NiW alloy composite base strip. The (111) surface pole figure of the surface layer of the baseband shows that the baseband has a strong biaxial cubic texture. The tensile test results show that the base...

Embodiment 2

[0023] The weighed 255g Ni powder and 45g W powder were mixed into quantitative NiW powder (code A) by long-time ball milling, and the weighed 289g Ni powder and 111g W powder were mixed into quantitative NiW powder by long-time ball milling ( code B); then the above-mentioned powders are powder-rolled directly by a powder rolling mill; 2 Sintering under the protective atmosphere of mixed gas for 5 hours, the sintering temperature is 1200 ℃, and the initial billet is obtained; the sintered billet is cold-rolled, the deformation of each pass is 5%, and the total deformation is 98%, and the final thickness is about 100 μm cold-rolled base strip; the cold-rolled base strip was annealed at 1200° C. for 1.5 h under a hydrogen burning protective atmosphere to obtain the final NiW alloy composite base strip. The (111) surface pole figure of the surface layer of the baseband shows that the baseband has a strong biaxial cubic texture. The tensile test results show that the baseband has...

Embodiment 3

[0025] The weighed 250g Ni powder and 50g W powder were mixed into quantitative NiW powder (code A) by long-time ball milling, and the weighed 297g Ni powder and 103g W powder were mixed into quantitative NiW powder by long-time ball milling ( code B); then the above-mentioned powders are powder-rolled directly by a powder rolling mill; 2 Sintering under the protective atmosphere of mixed gas for 6 hours, the sintering temperature is 1100 ℃, and the initial billet is obtained; the sintered billet is cold-rolled, the deformation of each pass is 4%, the total deformation is 99%, and the final thickness is about 120 μm cold-rolled base strip; the cold-rolled base strip was annealed at 1300° C. for 1 h under a hydrogen burning protective atmosphere to obtain the final NiW alloy composite base strip. The (111) surface pole figure of the baseband shows that the baseband has a strong biaxial cubic texture, and the tensile test results show that the baseband has a good yield strength,...

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Abstract

The invention relates to a nickel-based alloy composite substrate and a manufacturing method thereof and belongs to the technical field of manufacturing of high-temperature superconductive metal basebands. By the adoption of the manufacturing method of the nickel-based alloy composite substrate, cost is low, energy consumption is low and the process is easy and convenient. By the adoption of the manufacturing method, a nickel-tungsten alloy composite substrate is manufactured, wherein the content of tungsten atoms in the surface layer is 3%-9%, and the content of tungsten atoms in the core layer is 9%-15%. The manufacturing method comprises the steps that firstly, nickel powder and tungsten powder are mixed into nickel-tungsten powder; secondly, compression molding is conducted on the powder directly through a powder rolling method; thirdly, the nickel-tungsten powder (A) with the content of tungsten being 3%-9% and the nickel-tungsten powder (B) with the content of tungsten being 9%-15% are rolled into billets, the billets are placed in a tunnel furnace according to the sequence of A-B-A, high-temperature sintering is conducted, and then initial composite billets with even composites are obtained; fourthly, the initial composite billets are cold-rolled, the pass deformation is smaller than 10%, the total deformation is larger than 95%, and then a cold-rolled substrate is obtained; fifthly, the cold-rolled substrate is annealed at the temperature of 1000-1400 DEG C, and then the nickel-based alloy composite substrate is obtained. The nickel-based alloy composite substrate is high in overall mechanical strength and low in magnetism, a strong double-axis cube texture is formed on the surface, and the nickel-based alloy composite substrate can be well used as a coating conductor metal substrate.

Description

technical field [0001] The invention relates to a Ni-based alloy composite baseband and a method for preparing the Ni-based alloy composite baseband with low cost, low energy consumption and simple process, and belongs to the technical field of high-temperature superconducting metal baseband preparation. Background technique [0002] At present, in the field of high-temperature superconducting basebands, NiW alloy basebands are most widely used. NiW alloys with low W content are easy to obtain sharp cubic texture, but they are ferromagnetic and have low yield strength, which limits their applications. People have expanded their vision to NiW composites with high W content in the core layer and low W content in the outer layer Baseband. [0003] The current preparation methods of NiW ingot mainly include smelting method, cold isostatic pressing method, hot isostatic pressing method and spark plasma sintering method. These methods can obtain NiW alloy substrate with excellent...

Claims

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Application Information

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IPC IPC(8): B22F3/18B21B1/22
Inventor 罗穆伟王振李邦怿姚俊涛丁志春朱玉斌
Owner SHANGHAI UNIV
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