A kind of high magnetostriction coefficient Fe-ga based thin strip and its preparation method

A technology of stretching and fe-ga, which is applied in the field of high magnetostrictive coefficient Fe-Ga-based thin ribbon and its preparation, which can solve the problems of low magnetostrictive performance, high equipment precision requirements, and reduced magnetostrictive coefficient.

Active Publication Date: 2020-11-20
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of surface segregation, on the one hand, increases the cost and requires high equipment precision. On the other hand, it must be annealed at 1200 ° C or higher to obtain perfect secondary recrystallization and eliminate the adverse effects of S elements on magnetic properties, resulting in serious Ga volatilization.
Although the Chinese patent CN 104711475A removes the dependence on surface segregation by adding 5% to 15% mol% Al and nitriding twice after hot rolling and cold rolling, but the higher Al content reduces the magnetostriction coefficient and the two Secondary nitriding process is complex
Another main reason for the low magnetostrictive performance in the above research is the low degree of secondary recrystallization orientation, and adjusting the coordination and matching between the structure, texture and inhibitor before secondary recrystallization is the key to improving the degree of secondary recrystallization orientation. The essential

Method used

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  • A kind of high magnetostriction coefficient Fe-ga based thin strip and its preparation method
  • A kind of high magnetostriction coefficient Fe-ga based thin strip and its preparation method
  • A kind of high magnetostriction coefficient Fe-ga based thin strip and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] High magnetostriction coefficient Fe-Ga base thin strip, its composition contains by weight percentage: C: 0.03%, Al: 0.03%, Nb: 0.25%, Cu: 0.5%, Mn: 0.08%, S: 0.02% , Sn: 0.06%, Mo: 0.5%, the balance is Fe and other unavoidable impurities, and the Ga content is shown in Table 1.

[0099] The preparation method of the above-mentioned high magnetostriction coefficient Fe-Ga base thin strip comprises the following steps:

[0100] Step 1, smelting:

[0101] According to the set composition of the thin strip in Table 1, it is cast after smelting at 1440-1600°C;

[0102] Step 2, hot rolling:

[0103] (1) Heat the billet to 1100-1280°C and keep it warm;

[0104] (2) hot-rolling the billet after heating and heat preservation, the rolling start temperature is 1150-1200 ℃, and obtain a hot-rolled plate with a thickness of 2.5 mm after cooling;

[0105] Step 3, pickling and cold rolling:

[0106] (1) pickling the hot-rolled plate;

[0107] (2) The hot-rolled plate after pic...

Embodiment 2

[0119] High magnetostriction coefficient Fe-Ga base thin strip, its composition and weight percentage content is Ga: 22.3%, other composition is shown in Table 2, the balance is Fe and other unavoidable impurities.

[0120] The preparation method of the above-mentioned high magnetostriction coefficient Fe-Ga base thin strip comprises the following steps:

[0121] Step 1, smelting:

[0122] According to the set composition of the thin strip in Table 2, it is cast after smelting at 1440-1600°C;

[0123] Step 2, hot rolling:

[0124] (1) Heat the billet to 1100-1250°C and keep it warm;

[0125] (2) hot-rolling the billet after heating and heat preservation, the rolling start temperature is 1100-1200°C, and obtain a hot-rolled plate with a thickness of 2.3 mm after cooling;

[0126] Step 3, pickling and cold rolling:

[0127] (1) pickling the hot-rolled plate;

[0128] (2) The hot-rolled plate after pickling is carried out cold-rolled, adopts the cold-rolled thin strip of 0.2...

Embodiment 3

[0142] High magnetostriction coefficient Fe-Ga base thin strip, its composition contains by weight percentage: Ga: 20.4%, C: 0.05%, Nb: 0.1%, Cu: 0.2%, Mn: 0.08%, S: 0.015% ,, Mo: 0.05%, Tb: 0.3, the balance is Fe and other unavoidable impurities, and the Al content varies as shown in Table 3.

[0143] The preparation method of the above-mentioned high magnetostriction coefficient Fe-Ga base thin strip comprises the following steps:

[0144] Step 1, smelting:

[0145] According to the set composition of the thin strip in Table 3, it is cast after smelting at 1440-1600°C;

[0146] Step 2, hot rolling:

[0147] (1) Heat the billet to 1100-1280°C and keep it warm;

[0148] (2) hot-rolling the slab after heating and heat preservation, the rolling start temperature is 1150°C, and obtain a 4mm thick hot-rolled plate after cooling;

[0149] Step 3, pickling and cold rolling:

[0150] (1) hot rolling is carried out pickling to remove scale;

[0151] (2) The hot-rolled sheet is r...

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Abstract

The invention relates to a high magnetostriction coefficient Fe-Ga-based thin strip and a preparation method thereof. The invention adopts die casting, slab continuous casting, thin slab continuous casting and thin strip continuous casting slabs, and can carry out large-scale production simply and efficiently by using traditional rolling and annealing processes; establishes low-temperature inherent inhibitor + nitriding inhibition Agent system, control heat treatment and rolling process to precipitate fine Cu 2 S, Nb(C,N) and V(C,N) or their composite precipitates are used as the main intrinsic inhibitors. When the intrinsic inhibitory force is insufficient, nitriding is used to supplement the formation of nitrides such as AIN or BN before secondary recrystallization annealing. , to achieve flexible control of the suppression force; finely adjust the cold rolling parameters to ensure that the primary recrystallization obtains a fine and uniform structure and a favorable texture, and realize the coordination and matching of the structure, texture and inhibitor before the secondary recrystallization, and obtain a perfect and sharp Secondary recrystallization of Goss ({110}<001>) texture. The magnetostriction coefficient (3 / 2)λs of the finished Fe-Ga-based thin strip of the present invention is as high as 220-370ppm.

Description

technical field [0001] The invention belongs to the technical field of magnetic materials, and in particular relates to a high magnetostriction coefficient Fe-Ga base thin strip and a preparation method thereof. Background technique [0002] Magnetostrictive materials refer to smart materials whose length changes under the action of a magnetic field to generate displacement and work, or repeatedly elongates and shortens under an alternating magnetic field to generate vibration or sound waves, thereby converting electromagnetic energy into mechanical energy or sound energy. It is widely used in high-tech fields such as sonar underwater acoustic transducers, electroacoustic transducers, marine exploration and development, micro-displacement drives, vibration reduction and anti-vibration, intelligent mechanisms and automation, and is an important energy and information conversion Material. [0003] Magnetostrictive materials mainly include rare earth giant magnetostrictive mat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/06C22C38/12C22C38/04C22C38/60C21D8/12C23C8/26C23C8/80H01L41/20H01L41/47
CPCC21D8/1222C21D8/1255C21D8/1272C22C38/001C22C38/002C22C38/005C22C38/008C22C38/04C22C38/06C22C38/12C22C38/60C23C8/26C23C8/80H10N35/85H10N35/01
Inventor 沙玉辉雷蕃左良张芳和正华
Owner NORTHEASTERN UNIV LIAONING
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