Fe-Ga-Al alloy strip with high magnetostrictive properties and preparation method thereof

An alloy ribbon and telescopic technology, which is applied in the direction of material selection for magnetostrictive devices, metal material coating process, device material selection, etc., can solve problems such as difficult to achieve mass production, complex process equipment, unstable process problem, to achieve the effect of being conducive to large-scale production, high degree of orientation, and strong Gaussian texture

Active Publication Date: 2015-06-17
UNIV OF SCI & TECH BEIJING
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the above research on Fe-Ga and Fe-Al magnetostrictive strips, the shortcomings are that the method of secondary recrystallization induced by el

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fe-Ga-Al alloy strip with high magnetostrictive properties and preparation method thereof
  • Fe-Ga-Al alloy strip with high magnetostrictive properties and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1: Fe with high magnetostrictive properties 83 Ga 12 Al 5 Alloy strip and its preparation method

[0032] Use Fe with a purity of greater than 99.9%, Ga with 99.99%, and Al with 99.9%. Ga and Al are blended according to atomic percentages in consideration of 2% and 0.5% burn loss respectively. Put the prepared raw materials into a vacuum induction furnace, evacuated and pass in argon gas as a protective gas, induction heating to be completely melted, and then cast into ingots. The alloy ingots are kept at 1100°C for 10h to homogenize the structure and composition; forged to thickness at 1150°C 18mm rectangular blank; the forged alloy is hot-rolled at 1150℃; the hot-rolled alloy strip is placed in a nitriding furnace, heated to 950℃, introduced into an ammonia atmosphere, kept for 4 minutes and then taken out for air cooling; Warm rolling at 500°C and cold rolling at room temperature, the total reduction is 98.4%, the total number of passes is 23, and finally a stri...

Example Embodiment

[0035] Example 2: Fe with high magnetostrictive properties 83 Ga 8.5 Al 8.5 Alloy strip and its preparation method

[0036] Use Fe with a purity greater than 99.9%, Ga with 99.99% and Al with 99.9%. Ga and Al are blended according to atomic percentages, considering the burning loss of 2% and 0.5%, respectively. Put the prepared raw materials into a vacuum induction furnace, evacuated and pass in argon gas as a protective gas, induction heating to be completely melted, and then cast into ingots. The alloy ingots are kept at 1100°C for 10h to homogenize the structure and composition; forged to thickness at 1150°C It is an approximate rectangular blank of 20mm; the forged alloy is hot-rolled at 1150°C; the hot-rolled alloy strip is placed in a nitriding furnace, heated to 900°C, introduced into an ammonia atmosphere, and kept for 5 minutes before being air-cooled; After being warm-rolled at 600°C and cold-rolled at room temperature, the total reduction is 98.5%, the total number of ...

Example Embodiment

[0039] Example 3: High magnetostrictive properties (Fe 83 Ga 8.5 Al 8.5 ) 99.9 (NbC) 0.1 Alloy strip and its preparation method

[0040] Using Fe with purity greater than 99.9%, Ga with 99.99%, Al with 99.9%, ferroniobium, iron-carbon alloy, Ga and Al, considering the burning loss of 2% and 0.5%, are blended in atomic percentage. Put the prepared raw materials into a vacuum induction furnace, evacuated and blow in argon as a protective gas, induction heating to be completely melted, and then cast into ingots. The alloy ingots are kept at 1200°C for 20h to uniform structure composition; forged to thickness at 1150°C 18mm rectangular blank; the forged alloy is hot-rolled at 1150℃; the hot-rolled alloy strip is placed in a nitriding furnace, heated to 900℃, introduced into an ammonia atmosphere, kept for 5 minutes, and then taken out for air cooling; Warm rolling at 600°C and cold rolling at room temperature, the total reduction is 98.4%, the total number of passes is 26, and finall...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the field of magnetic materials, and relates to a Fe-Ga-Al alloy strip with high magnetostrictive properties and a preparation method thereof. The Fe-Ga-Al alloy strip is characterized in that a matrix of the alloy strip is a Fe-Ga-Al three-component alloy with a composition of Fe100-x-y-zGaxAlyMz, wherein M is one or more of B, Cr, V, Ti, Mn, MnS and NbC; and by calculating according to atomic ratios, x is equal to 7.5-25, y is equal to 5-15, x+y is equal to 15-30, z is equal to 0.1-1.0, and the balance is iron. The preparation method comprises the following steps: performing nitriding heat treatment for a short time respectively after hot rolling and cold rolling; introducing [N] into the process of heat treatment to ensure that [N] together with Al and other nitrides in the matrix form element combination so as to form tiny nitrides which are precipitated out; taking these precipitated phases as an inhibitor to inhibit the grain growth in the process of first-time recrystallization; and then performing second-time recrystallization and high-temperature heat treatment to finally obtain the Fe-Ga-Al alloy strip with a strong gauss texture. The magnetostrictive coefficient (3/2) lambdas of the alloy strip can reach more than 200ppm.

Description

technical field [0001] The invention belongs to the field of magnetic materials, and relates to a Fe-Ga-Al alloy strip with high magnetostrictive performance and a preparation method thereof. Background technique [0002] When the magnetization state of ferromagnetic and ferrimagnetic substances changes, their own length and volume change slightly. This phenomenon is called magnetostriction. The change in volume is called bulk magnetostriction, and the change in length is called linear magnetostriction. Practical magnetostrictive materials generally refer to linear magnetostrictive materials. The magnitude of the magnetostriction is expressed by the magnetostriction coefficient λ, λ=ΔL / L (L is the original length of the material, and ΔL is the change in the length of the material when the magnetization state changes). The maximum magnetostriction coefficient produced by the material when it is magnetized is called the saturation magnetostriction coefficient λ s . Usually...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C38/06C21D8/12C23C8/26H01L41/20
Inventor 高学绪刘阳阳李纪恒袁超包小倩
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap