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Alloy material with high resistivity and high elongation and preparation method thereof

A technology of alloy materials and high resistivity, applied in the field of alloy materials and their preparation, to achieve the effects of subsequent processing such as drawing and rolling, excellent plastic deformation ability, and improved mechanical properties

Active Publication Date: 2020-09-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Including the need for alloys with higher resistivity to achieve high heat conversion efficiency, and better processing properties to meet the needs of different service environments for material shapes, while maintaining lower costs, while the existing nickel-chromium alloys are becoming more and more The more difficult it is to meet these needs

Method used

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  • Alloy material with high resistivity and high elongation and preparation method thereof
  • Alloy material with high resistivity and high elongation and preparation method thereof
  • Alloy material with high resistivity and high elongation and preparation method thereof

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preparation example Construction

[0021] (2) a kind of preparation method of the alloy material of high electrical resistivity, high elongation, described method step is as follows:

[0022] ①Smelting: Weigh the raw material according to the chemical composition of the high resistivity alloy material, and prepare the master alloy ingot by vacuum induction melting under the protection of argon;

[0023] ②Remelting and casting: Under the protection of argon, heat the master alloy ingot to 1400-1600°C for remelting, and prepare a high-resistivity alloy material by turning over casting, wherein the current 550A;

[0024] The vacuum degree during melting, remelting and casting is 2.0×10 -3 Pa, the size of the alloy material is 50mm×13mm×40mm.

[0025] (3) The microstructure characterization, electrical resistivity and mechanical properties of the prepared alloy materials were tested under the same conditions: the phase structure used Bruker's X-ray diffractometer (D8 ADVANCE), and the test sample size was 10×10× ...

Embodiment 1

[0027] The chemical composition and mass percentage of the alloy material in this embodiment are: iron: 25%, cobalt: 14%, chromium: 10%, aluminum: 0.5%, non-metallic element silicon: 0.5% and boron: 0.5%, the balance For nickel and unavoidable impurities.

Embodiment 2

[0029] The chemical composition and mass percentage of the alloy material in this embodiment are: iron: 17%, cobalt: 25%, chromium: 18%, aluminum: 5%, silicon: 0.3%, boron: 0.8%, and the balance is nickel and unavoidable impurities.

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Abstract

The invention relates to an alloy material with high resistivity and high elongation and a preparation method thereof, and belongs to the field of alloy materials. A total mass of the alloy material is counted as 100%, the alloy material comprises the following chemical components of, by mass in percentage, 17%-25% of iron, 14%-25% of cobalt, 10%-19% of chromium, 0.5%-6% of aluminum, 0.2%-2% of anon-metallic element, the balance nickel and unavoidable impurities, wherein the non-metallic element is one or more of boron, carbon and silicon. Raw materials are smelted, remelted and cast to obtain the alloy material with the high resistivity and the high elongation. By regulating a content of each element, the resistivity of the alloy material is improved, and the mechanical property of the alloy material is improved while a single-phase structure is obtained, processing deformation of different requirements is conveniently realized, and the material has a wide application prospect.

Description

technical field [0001] The invention relates to an alloy material with high resistivity and high elongation and a preparation method thereof, belonging to the field of alloy materials. Background technique [0002] Electrothermal alloys are a class of materials that use the electrical resistance properties of materials to generate Joule effects to convert electrical energy into thermal energy, such as typical nickel-chromium alloy resistance wires. However, with the development of industry, people have higher and higher performance requirements for various heating elements. Including the need for alloys with higher resistivity to achieve high heat conversion efficiency, and better processing properties to meet the needs of different service environments for material shapes, while maintaining lower costs, while the existing nickel-chromium alloys are getting more and more The more difficult it is to meet these needs. Contents of the invention [0003] In view of the probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C1/03C22C30/00
CPCC22C19/058C22C1/023C22C1/03C22C30/00
Inventor 姚海华王鲁王本鹏薛云飞周正
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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