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Fe-Al-B magnetostrictive thin piece material and preparation method thereof

A magnetostrictive, fe-al-b technology, applied in the direction of material selection for magnetostrictive devices, device material selection, etc., can solve the problem of low texture strength, many rolling passes, rolling difficulties, etc. problem, to achieve the effect of simple manufacturing process, reduced number of rolling passes, and simple rolling process

Inactive Publication Date: 2013-02-27
无锡正一生源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the texture strength obtained in this way is not high, and for the Fe-Al binary alloy with an Al atomic percentage greater than 22% (mass fraction is about 12%), its plasticity is very poor, rolling is very difficult, and there are many rolling passes. Requires repeated intermediate annealing

Method used

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  • Fe-Al-B magnetostrictive thin piece material and preparation method thereof
  • Fe-Al-B magnetostrictive thin piece material and preparation method thereof
  • Fe-Al-B magnetostrictive thin piece material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] Example 1: Fe 80.95 Al 19 B 0.05 Preparation of Magnetostrictive Sheet Materials

[0035] The required raw materials are weighed with an electronic balance, and the ingredients are prepared according to the composition of the materials to be prepared. The raw materials used are Fe with a purity greater than 99.99%, Al with a purity greater than 99.99%, and boron-iron master alloys with a purity greater than 99.9%. The master alloy is smelted by vacuum induction melting, and the vacuum is pumped to 8×10 -2 Pa, through argon to keep the vacuum to 5×10 4 Heating after Pa, refining the raw materials for 3 minutes after melting, to ensure the uniformity of the alloy composition, casting the refined alloy into alloy ingots.

[0036] The alloy ingot was forged at 1100°C into a rectangular forging billet with a thickness of about 18mm, so as to be suitable for hot rolling. In practice, there is no special requirement for this thickness. The purpose of forging is mainly to ...

Embodiment 2

[0040] Example 2: Fe 76.1 Al 23.5 B 0.4 Preparation of Magnetostrictive Sheet Materials

[0041] The required raw materials are weighed with an electronic balance, and the ingredients are prepared according to the composition of the materials to be prepared. The raw materials used are Fe with a purity greater than 99.99%, Al with a purity greater than 99.99%, and boron-iron master alloys with a purity greater than 99.9%. The master alloy is smelted by vacuum induction melting, and the vacuum is pumped to 8×10 -2 Pa, through argon to keep the vacuum to 5×10 4 Heating after Pa, refining the raw materials for 3 minutes after melting, to ensure the uniformity of the alloy composition, casting the refined alloy into alloy ingots.

[0042] The as-cast alloy ingot was forged at 1200°C into a rectangular forging billet with a thickness of about 18mm, so as to be suitable for hot rolling.

[0043] The forged alloy sheet was hot-rolled at a temperature of 1150°C for 6 passes in tot...

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Abstract

The invention relates to a Fe-Al-B magnetostrictive thin piece material and a preparation method thereof. The components (atom fraction) of the material meet the formula that Fe100-x-yAlxBy, wherein x is equal to 15-26, y is equal to 0.03-0.5, and the balance is Fe. The obtained Fe-Al-B magnetostrictive thin piece material has strong goss texture and has excellent magnetostrictive performance along the rolling direction.

Description

technical field [0001] The invention relates to the field of magnetic materials, in particular to an Fe-Al-B magnetostrictive sheet material and a preparation method thereof. Background technique [0002] When a ferromagnet is magnetized in an external magnetic field, its length and volume change. This phenomenon is called magnetostriction. Magnetostrictive materials generally refer to materials with large magnetostrictive strain along a certain direction. The linear magnetostrictive strain is usually represented by λ, λ=ΔL / L (L is the original length of the material, and ΔL is the change in the length of the sample when the magnetization state changes). The magnetostrictive strain of a single crystal has crystallographic directionality, and usually has different magnetostrictive strain values ​​along different crystallographic directions. Therefore, for polycrystalline magnetostrictive materials, it is always desirable to obtain polycrystalline materials oriented along th...

Claims

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Application Information

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IPC IPC(8): C22C38/06C22C33/04C21D8/12H01L41/20
Inventor 李纪恒肖锡铭张茂才
Owner 无锡正一生源科技有限公司
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