CN108118194B - Preparation method of Fe-Co-based magnetostrictive alloy wire - Google Patents

Preparation method of Fe-Co-based magnetostrictive alloy wire Download PDF

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CN108118194B
CN108118194B CN201711174618.XA CN201711174618A CN108118194B CN 108118194 B CN108118194 B CN 108118194B CN 201711174618 A CN201711174618 A CN 201711174618A CN 108118194 B CN108118194 B CN 108118194B
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alloy
alloy wire
temperature
magnetostrictive
wire
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CN108118194A (en
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郝宏波
张光睿
王婷婷
乔禹
梁雨萍
江丽萍
吴双霞
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Baotou Rare Earth Research Institute
Ruike Rare Earth Metallurgy and Functional Materials National Engineering Research Center Co Ltd
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Ruike Rare Earth Metallurgy and Functional Materials National Engineering Research Center Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon

Abstract

The invention discloses a preparation method of a Fe-Co-based magnetostrictive alloy wire, which comprises the following steps: burdening, namely putting the burdening into a vacuum induction furnace, introducing argon for protection to smelt, and casting into a cylindrical Fe-Co alloy ingot after smelting is finished; heating and insulating the Fe-Co alloy cast ingot, forging the Fe-Co alloy cast ingot into a Fe-Co alloy round bar, hot-rolling the Fe-Co alloy round bar into a Fe-Co alloy wire rod, hot-drawing the Fe-Co alloy wire rod into a Fe-Co alloy wire, carrying out surface treatment on the Fe-Co alloy wire, and cold-drawing the Fe-Co alloy wire rod into a Fe-Co-based magnetostrictive wire; the Fe-Co-based magnetostrictive wire is subjected to heat treatment at 900 ℃ of 700 ℃ in a vacuum heating furnace, is kept for 0.5 to 1 hour, and is cooled to room temperature by water quenching or air cooling. The invention solves the problem that the magnetic property and the mechanical property of the prior magnetostrictive alloy wire are not stable.

Description

Preparation method of Fe-Co-based magnetostrictive alloy wire
Technical Field
The invention relates to a magnetostrictive material, in particular to a preparation method of a Fe-Co-based magnetostrictive alloy wire.
Background
The magnetostrictive material has the characteristics of being capable of being deformed in a recovery mode in the presence of an external magnetic field and changing the magnetic performance when stress is applied, and is an important energy and information conversion functional material. The magnetostrictive materials currently used in engineering are mainly of four general types: firstly, metals and alloys with magnetostrictive effect, such as nickel-based alloy and iron-based alloy, have high saturation magnetization, good mechanical properties and deformable characteristics; secondly, ferrite (such as Ni-Zn, Ni-Co-Cu and the like) has low saturation magnetization, low price and good high-frequency characteristic; the third is a rare earth intermetallic compound represented by Tb-Dy-Fe material, the magnetostrictive property of the rare earth intermetallic compound is far higher than that of the traditional magnetostrictive material, but the rare earth intermetallic compound has large brittleness, can not be processed into wires and has expensive raw materials; and fourthly, the Fe-Ga giant magnetostrictive material has better magnetostrictive property and mechanical property.
The magnetostrictive material is widely applied to the technical fields of transduction, driving, sensing and the like as an intelligent material. Liquid level gauge sensors developed using the dadman effect of magnetostrictive materials have wide application in modern industries. Most of waveguide wires of the core sensitive component are Fe-Ni alloy wires, but the magnetostriction performance of the Fe-Ni alloy wires is low, so that the accuracy and the measurement range of the sensor are limited. Therefore, a magnetostrictive alloy wire with simple preparation process, large magnetostriction and good mechanical properties is a key point of attention.
Disclosure of Invention
The invention aims to provide a preparation method of a Fe-Co-based magnetostrictive alloy wire, which solves the problem that the magnetic property and the mechanical property of the conventional magnetostrictive alloy wire are unstable.
The technical scheme is as follows:
a Fe-Co based magnetostrictive alloy characterized in that: the weight percentage of the alloy component is Fe100-x-y- zCoxMyREzM is one or more of Mn, V, Cu, Ti and Al, RE is one or more of La, Ce, Pr, Tb, Dy, Y and Er, wherein x is 60-80, Y is 0-10, z is 0.1-1.0, and the balance is Fe.
Further: x is 65-75, y is 0, z is 0.1-1.0, and the rest is Fe.
Further: x is 65-75, y is 0-5, and 65 is less than or equal to x + y is less than or equal to 80, z is 0.1-1.0, and the balance is Fe.
A preparation method of Fe-Co-based magnetostrictive alloy wires comprises the following steps:
according to the mass percentage of the alloy componentsProportioning and adding a proper amount of burning loss; putting the ingredients into a vacuum induction furnace, vacuumizing to 5-10Pa, introducing argon for protection to carry out smelting, and casting into a cylindrical Fe-Co alloy ingot after the smelting is finished; the weight percentage of the alloy component is Fe100-x-y-zCoxMyREzM is one or more of Mn, V, Cu, Ti and Al, RE is one or more of La, Ce, Pr, Tb, Dy, Y and Er, wherein x is 60-80, Y is 0-10, z is 0.1-1.0, and the balance is Fe;
heating the Fe-Co alloy ingot to 600-;
heating the Fe-Co alloy round bar to 800-1000 ℃ for hot rolling, wherein the total rolling pass is 7-10 times, and preparing the Fe-Co alloy wire rod with the diameter of 7.0-8.0 mm;
heating the Fe-Co alloy wire rod to 800-;
carrying out surface treatment on the Fe-Co alloy wire, and carrying out cold drawing, wherein the total drawing passes are 20-25 times, and the diameter of the Fe-Co-based magnetostrictive wire is 0.5-1.0 mm;
the Fe-Co-based magnetostrictive wire is subjected to heat treatment at the temperature of 700-900 ℃ in a vacuum heating furnace, is kept for 0.5-1 hour, and is cooled to the room temperature by water quenching or air cooling.
Preferably: and (4) polishing the surface of the Fe-Co alloy cast ingot to remove a surface oxide layer and defects.
Preferably: in the forging process, the final forging temperature is controlled to be not lower than 500 ℃, the forging is stopped when the temperature is lower than 500 ℃, and the forging is continued after the furnace is returned and the temperature is preserved for 10 to 30 minutes.
Preferably: and polishing the surface of the Fe-Co alloy round rod after forging is completed, and removing the surface oxidation layer and the defects of the Fe-Co alloy round rod.
Preferably: and in the hot rolling process, controlling the final rolling temperature to be not lower than 700 ℃, stopping hot rolling when the final rolling temperature is lower than 700 ℃, returning to the furnace and keeping the temperature for 10-20 minutes, and then continuing hot rolling.
Preferably: and carrying out acid washing and alkali washing treatment before hot drawing the Fe-Co alloy wire rod, and carrying out acid washing and alkali washing treatment on the Fe-Co alloy wire after cold drawing is finished to remove a surface oxide layer.
Preferably: the solution treatment is carried out in the cold drawing process, the treatment temperature is 500-700 ℃, the treatment time is 1-3 hours, and the cooling mode is water cooling or air cooling.
Compared with the prior art, the invention has the technical effects that:
1. the invention solves the problem of unstable magnetic property and mechanical property of the prior magnetostrictive alloy wire, and the preparation process of the Fe-Co magnetostrictive material is simple and easy to implement, has stable magnetic property and mechanical property, and has a magnetostrictive coefficient reaching 80 × 10-6Compared with the traditional iron-nickel alloy, the magnetostriction performance is nearly 5 times higher, and no negative influence is generated on other magnetic performance.
2. The invention improves the toughness and tensile property of the magnetostrictive wire rod by adding Mn, V, Cu, Ti, Al and other elements, so that the diameter of the alloy wire reaches 0.5-1.0 mm.
3. The preparation of the Fe-Co series alloy magnetostrictive wire rod is optimized and improved, the preparation cost is reduced, the stability of material preparation can be improved, and the large-scale batch production is facilitated. Thereby realizing the wide application of the Fe-Co alloy magnetostrictive alloy wire in the sensor.
Drawings
FIG. 1 is Fe in the present invention26.5Co73Y0.5A graph of magnetostrictive performance of the magnetostrictive alloy wire;
FIG. 2 shows Fe in the present invention20Co79Mn0.8Tb0.2A graph of magnetostrictive performance of the magnetostrictive alloy wire;
FIG. 3 shows Fe in the present invention23.2Co76Cu0.5Ce0.3Graph of magnetostrictive performance of magnetostrictive alloy wire.
Detailed Description
The technical solution of the present invention will be described in detail with reference to exemplary embodiments. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
The preparation method of the Fe-Co-based magnetostrictive alloy wire adopts a hot drawing method and comprises the following specific steps:
step 1: mixing the materials according to the mass percentage of the alloy components, and adding a proper amount of burning loss; putting the ingredients into a vacuum induction furnace, vacuumizing to 5-10Pa, introducing argon for protection to carry out smelting, and casting into a cylindrical Fe-Co alloy ingot after the smelting is finished;
the Fe-Co-based magnetostrictive alloy comprises the following alloy components in percentage by weight: fe100-x-y-zCoxMyREzM is one or more of Mn, V, Cu, Ti and Al, RE is one or more of La, Ce, Pr, Tb, Dy, Y and Er, wherein x is 60-80, Y is 0-10, z is 0.1-1.0, and the balance is Fe.
And polishing the surface of the Fe-Co alloy cast ingot to remove a surface oxide layer and defects, and finally obtaining the Fe-Co alloy cast ingot with a smooth surface.
Step 2: heating the Fe-Co alloy ingot to 600-;
controlling the final forging temperature to be not lower than 500 ℃, stopping forging when the final forging temperature is lower than 500 ℃, and continuing forging after the furnace is returned and the temperature is kept for 10-30 minutes. And after the forging is finished, polishing the surface of the Fe-Co alloy round rod to remove the surface oxide layer and the defects of the Fe-Co alloy round rod, and finally obtaining the Fe-Co alloy round rod with a smooth surface.
And step 3: heating the Fe-Co alloy round bar to 800-;
the final rolling temperature is controlled to be not lower than 700 ℃, the hot rolling is stopped when the temperature is lower than 700 ℃, and the hot rolling is continued after the furnace is returned and the heat is preserved for 10 to 20 minutes.
And 4, step 4: heating the Fe-Co alloy wire rod to 800-;
and carrying out acid washing and alkali washing treatment before hot drawing the Fe-Co alloy wire rod to remove a surface oxide layer.
And 5: carrying out surface treatment on the Fe-Co alloy wire, and carrying out cold drawing by using a horizontal wire drawing machine, wherein the total drawing passes are 20-25 times, and the diameter of the Fe-Co based magnetostrictive wire is 0.5-1.0 mm;
and after the cold drawing is finished, carrying out acid washing and alkali washing treatment on the Fe-Co alloy wire to remove a surface oxide layer. The cold drawing process needs solid solution treatment, the treatment temperature is 500-700 ℃, the treatment time is 1-3 hours, and the cooling mode is water cooling or air cooling.
Step 6: and (3) performing heat treatment on the Fe-Co-based magnetostrictive wire at the temperature of 700-900 ℃ in a vacuum heating furnace, preserving the heat for 0.5-1 hour, and cooling to room temperature by water quenching or air cooling to obtain the Fe-Co-based magnetostrictive alloy wire.
The purity of the raw materials selected in the embodiment of the invention is more than 99.95%. In the embodiment of the invention, the magnetostrictive strain is measured in the parallel direction by adopting a standard resistance strain gage method.
The technical scheme of the invention is further specifically described by the following embodiments.
Example 1:
step 1: weighing raw materials of 26.5% of Fe, 73% of Co and 0.5% of Y according to the weight percentage, wherein the sum of the weight percentages of the raw materials is 100%, putting the raw materials into a vacuum induction furnace, vacuumizing to 8Pa, introducing argon for protection to smelt, and casting into a cylindrical ingot after smelting; then, polishing the alloy surface to remove the surface oxide layer and defects of the Fe-Co alloy cast ingot, and finally obtaining the Fe-Co alloy cast ingot with a smooth surface;
step 2: heating the Fe-Co alloy ingot to 850 ℃, preserving heat for 1 hour, forging, controlling the final forging temperature to 700 ℃, finally forging to an alloy round bar with the diameter of 31mm, stopping forging when the temperature is lower than 700 ℃, returning to the furnace and preserving heat for 20 minutes, and continuing forging; polishing the alloy surface after forging is finished, removing a surface oxide layer and defects of the Fe-Co alloy rod, and finally obtaining the Fe-Co alloy round rod with a smooth surface;
and step 3: heating the Fe-Co alloy round bar to 1000 ℃, carrying out hot rolling by adopting a four-roller rolling mill, controlling the final rolling temperature to be 900 ℃, stopping the hot rolling when the temperature is lower than 900 ℃, carrying out remelting and heat preservation for 15 minutes, continuing the hot rolling, and carrying out 10-pass rolling to prepare a Fe-Co alloy wire rod with the diameter of 8.0 mm;
and 4, step 4: carrying out acid washing and alkali washing on the Fe-Co alloy wire rod, removing a surface oxide layer, heating to 1000 ℃, carrying out hot drawing by using a horizontal wire drawing machine, and carrying out wire drawing for 10 times to prepare the Fe-Co-based magnetostrictive wire with the diameter of 3.5 mm;
and 5: carrying out surface treatment on the Fe-Co alloy wire, carrying out cold drawing by adopting a horizontal wire drawing machine for 20 times of total drawing passes to prepare the Fe-Co-based magnetostrictive wire with the diameter of 0.8mm, wherein the solution treatment is required in the process, the treatment temperature is 700 ℃, the treatment time is 1.5 hours, and the cooling mode is water cooling;
step 6: and (3) carrying out heat treatment on the Fe-Co-based magnetostrictive wire at 800 ℃ in a vacuum heating furnace, preserving the heat for 0.5 hour, and cooling to room temperature by adopting water quenching to obtain the Fe-Co-based magnetostrictive alloy wire.
As shown in FIG. 1, it is Fe in the present invention26.5Co73Y0.5Graph of magnetostrictive performance of magnetostrictive alloy wire.
When the magnetic field is 2000Oe, the magnetostriction coefficient reaches 76 × 10-6At 4000Oe, the magnetic elongation reaches saturation with a coefficient of 81 × 10-6。
Example 2:
step 1: weighing raw materials of 20% of Fe, 79% of Co, 0.8% of Mn0.2% of Tb0.2% of Fe, wherein the sum of the weight percentages of the raw materials is 100%, putting the raw materials into a vacuum induction furnace, vacuumizing to 10Pa, introducing argon for protection to smelt, and casting into a cylindrical ingot after smelting; then, polishing the alloy surface to remove the surface oxide layer and defects of the Fe-Co alloy cast ingot, and finally obtaining the Fe-Co alloy cast ingot with a smooth surface;
step 2: heating the Fe-Co alloy ingot to 700 ℃, preserving heat for 1.5 hours, then forging, wherein the final forging temperature is 600 ℃, finally forging to an alloy round bar with the diameter of 35mm, controlling in the process, stopping forging when the temperature is lower than 600 ℃, returning to the furnace and preserving heat for 15 minutes, and then continuing forging; polishing the alloy surface after forging is finished, removing a surface oxide layer and defects of the Fe-Co alloy rod, and finally obtaining the Fe-Co alloy rod with a smooth surface;
and step 3: heating the Fe-Co alloy round bar to 900 ℃, carrying out hot rolling by adopting a four-roller rolling mill, controlling the final rolling temperature to 700 ℃, stopping the hot rolling when the temperature is lower than 700 ℃, returning to the furnace and keeping the temperature for 20 minutes, continuing the hot rolling, and carrying out 8-pass rolling to prepare a Fe-Co alloy wire rod with the diameter of 7.5 mm;
and 4, step 4: carrying out acid washing and alkali washing on the Fe-Co alloy wire rod, removing a surface oxide layer, heating to 900 ℃, carrying out hot drawing by using a horizontal wire drawing machine, and carrying out wire drawing for 8 times to prepare the Fe-Co-based magnetostrictive wire with the diameter of 3.0 mm;
and 5: carrying out surface treatment on the Fe-Co alloy wire, carrying out cold drawing by adopting a horizontal wire drawing machine for 23 times of total drawing passes to prepare the Fe-Co-based magnetostrictive wire with the diameter of 0.6mm, wherein the solution treatment is required in the process, the treatment temperature is 700 ℃, the treatment time is 1 hour, and the cooling mode is air cooling;
step 6: and (3) carrying out heat treatment on the Fe-Co-based magnetostrictive wire at 900 ℃ in a vacuum heating furnace, preserving the heat for 1 hour, and cooling to room temperature in an air cooling mode to obtain the Fe-Co-based magnetostrictive alloy wire.
As shown in FIG. 2, it is Fe in the present invention20Co79Mn0.8Tb0.2Graph of magnetostrictive performance of magnetostrictive alloy wire.
When the magnetic field is 2000Oe, the magnetostriction coefficient reaches 78 × 10-6At 4000Oe, the magnetic elongation reaches saturation with a coefficient of 80 × 10-6。
Example 3:
step 1: weighing raw materials of 23.2% of Fe, 76% of Co, 0.5% of Cu and 0.3% of Ce0.3% in percentage by weight, wherein the sum of the percentages by weight of the raw materials is 100%, putting the raw materials into a vacuum induction furnace, vacuumizing to 10Pa, introducing argon for protection to smelt, and casting into a cylindrical ingot after smelting; then, polishing the alloy surface to remove the surface oxide layer and defects of the Fe-Co alloy cast ingot, and finally obtaining the Fe-Co alloy cast ingot with a smooth surface;
step 2: heating the Fe-Co alloy ingot to 800 ℃, preserving heat for 2 hours, then forging, wherein the final forging temperature is 600 ℃, finally forging to an alloy round bar with the diameter of 35mm, controlling in the process, stopping forging when the temperature is lower than 600 ℃, returning to the furnace and preserving heat for 10 minutes, and then continuing forging; polishing the alloy surface after forging is finished, removing a surface oxide layer and defects of the Fe-Co alloy rod, and finally obtaining the Fe-Co alloy round rod with a smooth surface;
and step 3: heating the Fe-Co alloy round bar to 900 ℃, carrying out hot rolling by adopting a four-roller rolling mill, controlling the final rolling temperature to 700 ℃, stopping the hot rolling when the temperature is lower than 700 ℃, returning to the furnace and keeping the temperature for 20 minutes, continuing the hot rolling, and carrying out 9-pass rolling to prepare a Fe-Co alloy wire rod with the diameter of 7.0 mm;
and 4, step 4: carrying out acid washing and alkali washing on the Fe-Co alloy wire rod, removing a surface oxide layer, heating to 900 ℃, carrying out hot drawing by using a horizontal wire drawing machine, and carrying out wire drawing for 9 times to prepare the Fe-Co-based magnetostrictive wire with the diameter of 3.0 mm;
and 5: carrying out surface treatment on the Fe-Co alloy wire, carrying out cold drawing by adopting a horizontal wire drawing machine for 25 times of total drawing passes to prepare the Fe-Co-based magnetostrictive wire with the diameter of 0.5mm, wherein the solution treatment is required in the process, the treatment temperature is 650 ℃, the treatment time is 2 hours, and the cooling mode is water cooling;
step 6: and (3) carrying out heat treatment on the Fe-Co-based magnetostrictive wire at 900 ℃ in a vacuum heating furnace, preserving the heat for 1 hour, and cooling to room temperature in an air cooling mode to obtain the Fe-Co-based magnetostrictive alloy wire.
FIG. 3 shows Fe in the present invention23.2Co76Cu0.5Ce0.3Graph of magnetostrictive performance of magnetostrictive alloy wire.
When the magnetic field is 2000Oe, the magnetostriction coefficient reaches 75 × 10-6At 3500Oe magnetic field, the magnetic elongation reaches saturation with coefficient of 80 × 10-6。
The terminology used herein is for the purpose of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (6)

1. A preparation method of Fe-Co-based magnetostrictive alloy wires comprises the following steps:
mixing the materials according to the mass percentage of the alloy components, and adding a proper amount of burning loss; putting the ingredients into a vacuum induction furnace, vacuumizing to 5-10Pa, introducing argon for protection to carry out smelting, and casting into a cylindrical Fe-Co alloy ingot after the smelting is finished; the weight percentage of the alloy component is Fe100-x-y-zCoxMyREzM is one or more of Mn, V, Cu, Ti and Al, RE is one or more of La, Ce, Pr, Tb, Dy, Y and Er, wherein x is 60-80, Y is 0-10, z is 0.1-1.0, and the balance is Fe;
heating the Fe-Co alloy ingot to 600-;
heating the Fe-Co alloy round bar to 800-1000 ℃ for hot rolling, wherein the total rolling pass is 7-10 times, and preparing the Fe-Co alloy wire rod with the diameter of 7.0-8.0 mm;
heating the Fe-Co alloy wire rod to 800-;
carrying out surface treatment on the Fe-Co alloy wire, and carrying out cold drawing, wherein the total drawing passes are 20-25 times, and the diameter of the Fe-Co-based magnetostrictive wire is 0.5-1.0 mm;
the Fe-Co-based magnetostrictive wire is subjected to heat treatment at the temperature of 700-900 ℃ in a vacuum heating furnace, is kept for 0.5-1 hour, and is cooled to the room temperature by water quenching or air cooling.
2. The method for producing an Fe-Co-based magnetostrictive alloy wire according to claim 1, characterized in that: in the forging process, the final forging temperature is controlled to be not lower than 500 ℃, the forging is stopped when the temperature is lower than 500 ℃, and the forging is continued after the furnace is returned and the temperature is preserved for 10 to 30 minutes.
3. The method for producing an Fe-Co-based magnetostrictive alloy wire according to claim 1 or 2, characterized in that: and polishing the surface of the Fe-Co alloy cast ingot, polishing the surface of the Fe-Co alloy round rod after forging is completed, and removing a surface oxidation layer and defects of the Fe-Co alloy round rod.
4. The method for producing an Fe-Co-based magnetostrictive alloy wire according to claim 1 or 2, characterized in that: and in the hot rolling process, controlling the final rolling temperature to be not lower than 700 ℃, stopping hot rolling when the final rolling temperature is lower than 700 ℃, returning to the furnace and keeping the temperature for 10-20 minutes, and then continuing hot rolling.
5. The method for producing an Fe-Co-based magnetostrictive alloy wire according to claim 1, characterized in that: and carrying out acid washing and alkali washing treatment before hot drawing the Fe-Co alloy wire rod, and carrying out acid washing and alkali washing treatment on the Fe-Co alloy wire after cold drawing is finished to remove a surface oxide layer.
6. The method for producing an Fe-Co-based magnetostrictive alloy wire according to claim 1, characterized in that: the solution treatment is carried out in the cold drawing process, the treatment temperature is 500-700 ℃, the treatment time is 1-3 hours, and the cooling mode is water cooling or air cooling.
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CN107331913A (en) * 2017-07-17 2017-11-07 河南师范大学 The method that double rear-earth-doped Conjugate ferrite magnetostriction materials are prepared using waste and old lithium ion battery

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