CN102400034B - FeGa magnetostriction alloy wire and preparation method thereof - Google Patents
FeGa magnetostriction alloy wire and preparation method thereof Download PDFInfo
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- CN102400034B CN102400034B CN 201110385765 CN201110385765A CN102400034B CN 102400034 B CN102400034 B CN 102400034B CN 201110385765 CN201110385765 CN 201110385765 CN 201110385765 A CN201110385765 A CN 201110385765A CN 102400034 B CN102400034 B CN 102400034B
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 72
- 239000000956 alloy Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 238000007669 thermal treatment Methods 0.000 claims abstract description 8
- 230000006355 external stress Effects 0.000 claims abstract description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 229910000521 B alloy Inorganic materials 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 abstract 2
- 230000008023 solidification Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The invention provides a FeGa magnetostriction alloy wire which comprises the following components by atomic percent: 15-30% of Ga and the balance of Fe. The diameter of the alloy wire is 0.1-1mm, the tensile strength is 400-650MPa, and the magnetostrictive strain without action of external stress is 80-225ppm. The invention also provides a preparation method of the FeGa magnetostriction alloy wire, and the preparation method comprises the following steps: cast master alloy preparation, alloy directional solidification under a magnetic field, alloy thermal treatment under the magnetic field, drawing plastic deformation and the like. According to the invention, the characteristic of an alpha-Fe phase that the preferred direction and the preferred growth direction are (100) crystallographic directions is fully utilized, and the action of the magnetic field is utilized to control the alloy solidification and thermal treatment processes, thus the obtained FeGa alloy wire through preparation has the advantages that the magnetostrictive strain is improved by 0.9-2.8 times compared with the FeGa alloy wire with same Ga content prepared in the prior art and the magnetostrictive strain is improved by 30-85% compared with the FeGa alloy wire without the action of the magnetic field under same conditions.
Description
Technical field
The present invention relates to the alloy preparing technical field, be specifically related to a kind of FeGa magnetostriction alloy wire and preparation method thereof.
Background technology
The performance characteristic of the excellences such as the FeGa alloy has low cost, high-tensile, fragility is little, permeability is high and low performance is good, in dual-use high-tech sectors such as sonar underwater acoustic transducer technology, electroacoustics transducer technology, Micro-displacement Driving, vibration damping and vibrationproof and fluctuation oil recoveries, more wide potential using value being arranged, is the important strategic magneticsubstance of a class.Since self-discovery FeGa magnetostriction materials, important scientific research institution has all carried out research around preparation technology and the performance of FeGa magnetostriction materials both at home and abroad.But only be equivalent to due to the FeGa alloy magnetostriction strain of at present preparation present widespread use the Terfenl-D magnetostriction materials 1/10～1/5, how to improve FeGa material preparation technique, make crystal grain as far as possible along＜100〉direction arrangements, be the important research content that improves FeGa material Magnetostriction always.The methods such as directional freeze, melt_spun and viscous deformation all are applied in the preparation technology of FeGa magnetostriction materials, have accelerated the industrial application of FeGa alloy.
The easy magnetization axis of FeGa alloy, preferential growth direction be＜and 100〉crystallographic direction, monocrystalline or polycrystalline FeGa alloy when preparation along＜100〉oriented growth can obtain very large magnetostrictive strain.China's application number be disclose in the patent of invention of CN 200710062867.X a kind of by melting, swage and cold-drawn prepares that under downfield, magnetostrictive strain is the preparation method of the FeGa magnetostriction alloy wire of 21～118ppm, during this method is implemented the a-Fe of body-centered cubic crystal structure be subjected to mutually the effect of rotational symmetry large plastometric set mainly present＜110〉texture, cause the magnetostrictive strain of acquisition lower.China's application number is that the patent of invention of CN 02117462.8 is mentioned when FeGa series magnetostriction material preparation process, applies 500-2000Oe magnetic field in the cold process of stove, can improve the saturation magnetostriction strain, and is beneficial under less than 200Oe magnetic field situation and works.Above patented technology shows, by influence of magnetic field FeGa alloy graining and heat treatment process, can obtain than the high-magnetostriction strain in conjunction with large plastometric set.But the FeGa magnetostriction materials crystal grain that above technology prepares is lower along＜100〉crystal orientation degree of alignment, this has limited the further raising of magnetostrictive strain, does not relate to the magnetic field technology report that in alloy directionally solidified and thermal treatment process, coupling is used at FeGa in existing document.
Summary of the invention
The objective of the invention is the problem for prior art, a kind of FeGa magnetostriction alloy wire and preparation method thereof.FeGa magnetostriction alloy wire of the present invention, wherein the atomic percent of Ga is 15%～30%, and surplus is Fe, and FeGa magnetostriction alloy wire diameter is 0.1～1mm, tensile strength is 400～650MPa, and making the used time magnetostrictive strain without external stress is 80～225ppm.
The preparation method of FeGa magnetostriction alloy wire of the present invention comprises following processing step:
(1) adopting the pure Fe of purity 〉=99.9wt% and the Ga of purity 〉=99.9wt% is raw material, the atomic percent of Ga is 15%～30%, surplus is Fe, adopts the mode of inhaling casting or casting in the smelting metal mould in vacuum induction furnace after the high vacuum arc melting to prepare as cast condition FeGa mother alloy;
(2) the as cast condition FeGa mother alloy with preparation is placed in 0.01～20T steady magnetic field, be warmed up to 1400～1550 ℃, being incubated after 0.5～2 hour, is that 10～50 ℃/mm, withdrawing rate are to make as cast condition FeGa mother alloy directional freeze under the condition of 0.01～20mm/s in thermograde;
(3) directional freeze FeGa alloy under magnetic field is placed in 0.01～20T magnetic field, be under 1000～1100 ℃ of conditions in temperature, be incubated after 0.5～24 hour, be cooled to 750 ℃～850 ℃ with the rate of cooling of 0.5～5 ℃/minute, be incubated 0.5～24 hour, then hardening or cool to room temperature with the furnace;
(4) the FeGa alloy of step (3) after thermomagnetic treatment being carried out total draft at 700 ℃～800 ℃ is 0.3～0.5 forge hot;
(5) the FeGa alloy after forge hot being carried out total draft is 0.2～0.4 room temperature drawing large plastometric set;
(6) with the FeGa material that obtains after large plastometric set, be placed in the magnetic field of 0.01～20T, under the temperature condition of 500 ℃～650 ℃, be incubated after 1～12 hour, cool to room temperature with the furnace;
(7) with the FeGa alloy after step (6) thermal treatment, carry out total draft and be 0.1～0.3 room temperature drawing large plastometric set again; At last,
(8) will be the B alloy wire of 0.1～1mm through drawing large plastometric set diameter again, and be placed in the magnetic field of 0.01～20T, and under 450 ℃～600 ℃ temperature condition, be incubated after 1～12 hour, last hardening be cooled to room temperature;
In described step (1), as cast condition FeGa mother alloy is to adopt the high vacuum electric arc furnace in suction casting under 0.25～0.75 standard atmospheric pressure argon shield or adopt vacuum induction melting furnace to cast in copper mold under 0.25～0.75 standard atmospheric pressure argon shield to form.
The invention has the beneficial effects as follows:
Due to easy magnetization axis and the preferential growth direction of α-Fe phase be＜100〉crystallographic direction, by apply magnetic field in the alloy directionally solidified process of FeGa, magnetic field orientating effect and α-Fe crystal preferential growth effect mutually have been coupled, promoted α-Fe solidifying middle edge＜100〉direction growth arrangement, increasing the alloy directionally solidified α-Fe of FeGa hands down＜100〉the direction degree of arranging; By apply thermomagnetic treatment in FeGa alloy and B alloy wire preparation process, promoted α-Fe to be tending towards mutually the easy magnetization axis along minimum energy, namely＜100〉texture direction arrangement.By implementing above summary of the invention, the FeGa B alloy wire of preparation has improved 0.9～2.8 times than the identical Ga content F eGa B alloy wire of prior art preparation without magnetostrictive strain under the external stress effect, than under the same terms during without the action of a magnetic field FeGa B alloy wire magnetostrictive strain improved 30%～85%.
Description of drawings
Fig. 1 be have in embodiment 2, the Magnetostriction of FeGa alloy during without magnetic field, wherein refer to without magnetic field condition the FeGa alloy for preparing when all magnetic field conditions are 0 T in embodiment 2.
Embodiment
The high vacuum electric arc furnace model that adopts in the embodiment of the present invention is ZFH-300-70;
The vacuum induction melting furnace model that adopts in the embodiment of the present invention is TG100A-25;
The embodiment of the present invention adopts the JMTD-12T100 superconducting magnet;
Adopt the JSD-20T52 superconducting magnet in the embodiment of the present invention;
The vacuum heat treatment furnace model that adopts in the embodiment of the present invention is VHT-II;
Adopt the SANS-CMT5105 electronic universal tester to carry out stress-strain curves in the embodiment of the present invention and test and obtain tensile strength;
In the embodiment of the present invention, magnetostrictive strain adopts the standard resistance strain gauge method to record in parallel and vertical direction.
Embodiment 1
(1) adopting the pure Fe of purity 〉=99.9wt% and the Ga of purity 〉=99.9wt% is raw material, adopts the high vacuum electric arc furnace to inhale casting preparation as cast condition Fe-15%Ga(atomic fraction under 0.5 standard atmospheric pressure argon shield) mother alloy;
(2) the as cast condition FeGa mother alloy with preparation is placed in 0.01T magnetic field, is warmed up to 1550 ℃, be incubated after 2 hours, and be that 50 ℃/mm, withdrawing rate are to make as cast condition FeGa mother alloy directional freeze under the condition of 0.5mm/s in thermograde;
(3) the FeGa alloy with directional freeze under the magnetic field of preparation is placed in 20T magnetic field, is under 1000 ℃ of conditions in temperature, is incubated after 12 hours, is cooled to 750 ℃ with the rate of cooling of 5 ℃/minutes, is incubated 24 hours, then cools to room temperature with the furnace;
(4) the FeGa alloy after thermomagnetic treatment being carried out total draft at 700 ℃ is 0.3 forge hot;
(5) the FeGa alloy after forge hot being carried out total draft is 0.2 room temperature drawing large plastometric set;
(6) with the FeGa material that obtains after large plastometric set, be placed in the magnetic field of 10T, under the temperature condition of 500 ℃, be incubated after 8 hours, cool to room temperature with the furnace;
(7) with the FeGa alloy after step (6) thermal treatment, carry out total draft and be 0.1 room temperature drawing large plastometric set again; At last,
(8) will be the B alloy wire of 1mm through large plastometric set diameter again, and be placed in the magnetic field of 20T, and under 450 ℃ of temperature condition, be incubated after 12 hours, last hardening be cooled to room temperature;
The tensile strength of the Fe-15%Ga B alloy wire for preparing is 400MPa, is 120ppm without magnetostrictive strain under the external stress effect.
Embodiment 2
(1) adopting the pure Fe of purity 〉=99.9wt% and the Ga of purity 〉=99.9wt% is raw material, adopts the high vacuum electric arc furnace to inhale casting preparation as cast condition Fe-27%Ga(atomic fraction under 0.75 standard atmospheric pressure argon shield) mother alloy;
(2) the as cast condition FeGa mother alloy with preparation is placed in 10T magnetic field, is warmed up to 1450 ℃, be incubated after 1 hour, and be that 10 ℃/mm, withdrawing rate are to make as cast condition FeGa mother alloy directional freeze under the condition of 0.01mm/s in thermograde;
(3) the FeGa alloy with directional freeze under the magnetic field of preparation is placed in 12T magnetic field, is under 1050 ℃ of conditions in temperature, is incubated after 0.5 hour, is cooled to 850 ℃ with the rate of cooling of 0.5 ℃/minute, is incubated 0.5 hour, then hardening;
(4) the FeGa alloy after thermomagnetic treatment being carried out total draft at 720 ℃ is 0.35 forge hot;
(5) the FeGa alloy after forge hot being carried out total draft is 0.3 room temperature drawing large plastometric set;
(6) with the FeGa material that obtains after large plastometric set, be placed in the magnetic field of 0.1T, under the temperature condition of 650 ℃, be incubated after 1 hour, cool to room temperature with the furnace;
(7) with the FeGa alloy after step (6) thermal treatment, carry out total draft and be 0.15 room temperature drawing large plastometric set again; At last,
(8) will be the B alloy wire of 0.1mm through large plastometric set diameter again, and be placed in the magnetic field of 0.01T, and under 500 ℃ of temperature condition, be incubated after 1 hour, last hardening be cooled to room temperature;
The Fe-27%Ga B alloy wire tensile strength for preparing is 550MPa, is 225ppm without magnetostrictive strain under the external stress effect.
Embodiment 3
(1) adopting the pure Fe of purity 〉=99.9wt% and the Ga of purity 〉=99.9wt% is raw material, adopts vacuum melting furnace to cast in copper mold under 0.5 standard atmospheric pressure argon shield and prepares as cast condition Fe-30%Ga(atomic fraction) mother alloy;
(2) the as cast condition FeGa mother alloy with preparation is placed in 20T magnetic field, is warmed up to 1400 ℃, be incubated after 0.5 hour, and be that 30 ℃/mm, withdrawing rate are to make as cast condition FeGa mother alloy directional freeze under the condition of 20mm/s in thermograde;
(3) the FeGa alloy with directional freeze under the magnetic field of preparation is placed in 0.01T magnetic field, is under 1100 ℃ of conditions in temperature, is incubated after 24 hours, is cooled to 800 ℃ with the rate of cooling of 2 ℃/minutes, is incubated 10 hours, then hardening;
(4) the FeGa alloy after thermomagnetic treatment being carried out total draft at 800 ℃ is 0.5 forge hot;
(5) the FeGa alloy after forge hot being carried out total draft is 0.4 room temperature drawing large plastometric set;
(6) with the FeGa material that obtains after large plastometric set, be placed in the magnetic field of 20T, under the temperature condition of 550 ℃, be incubated after 12 hours, cool to room temperature with the furnace;
(7) with the FeGa alloy after step (6) thermal treatment, carry out total draft and be 0.3 room temperature drawing large plastometric set again; At last,
(8) will be the B alloy wire of 0.5mm through large plastometric set diameter again, and be placed in the magnetic field of 6T, and under 600 ℃ of temperature condition, be incubated after 8 hours, last hardening be cooled to room temperature;
The Fe-30%Ga B alloy wire tensile strength for preparing is 650MPa, is 80ppm without magnetostrictive strain under the external stress effect.
Claims (2)
1. the preparation method of a FeGa magnetostriction alloy wire is characterized in that being undertaken by following processing step:
(1) adopting the pure Fe of purity 〉=99.9wt% and the Ga of purity 〉=99.9wt% is raw material, and the atomic percent of Ga is 15%～30%, and surplus is Fe, preparation as cast condition FeGa mother alloy;
(2) the as cast condition FeGa mother alloy with preparation is placed in 0.01～20T steady magnetic field, be warmed up to 1400～1550 ℃, being incubated after 0.5～2 hour, is that 10～50 ℃/mm, withdrawing rate are to make as cast condition FeGa mother alloy directional freeze under the condition of 0.01～20mm/s in thermograde;
(3) the FeGa alloy with directional freeze under magnetic field is placed in 0.01～20T magnetic field, be under 1000～1100 ℃ of conditions in temperature, be incubated after 0.5～24 hour, rate of cooling with 0.5～5 ℃/minute is cooled to 750 ℃～850 ℃, be incubated 0.5～24 hour, then hardening or cool to room temperature with the furnace;
(4) the FeGa alloy of step (3) after thermomagnetic treatment being carried out total draft at 700 ℃～800 ℃ is 0.3～0.5 forge hot;
(5) the FeGa alloy after forge hot being carried out total draft is 0.2～0.4 room temperature drawing large plastometric set;
(6) with the FeGa material that obtains after large plastometric set, be placed in the magnetic field of 0.01～20T, under the temperature condition of 500 ℃～650 ℃, be incubated after 1～12 hour, cool to room temperature with the furnace;
(7) with the FeGa alloy after step (6) thermal treatment, carry out total draft and be 0.1～0.3 room temperature drawing large plastometric set again; At last,
(8) be the B alloy wire of 0.1～1mm with step (7) through drawing large plastometric set diameter again, be placed in the magnetic field of 0.01～20T, under 450 ℃～600 ℃ temperature condition, be incubated after 1～12 hour, last hardening is cooled to room temperature;
In gained FeGa magnetostriction alloy wire, the atomic percent of Ga is 15%～30%, and surplus is Fe, and FeGa magnetostriction alloy wire diameter is 0.1～1mm, and tensile strength is 400～650MPa, is 80～225ppm without magnetostrictive strain under the external stress effect.
2. the preparation method of a kind of FeGa magnetostriction alloy wire according to claim 1; it is characterized in that in described step (1); as cast condition FeGa mother alloy be in vacuum arc fumace at 0.25～0.75 standard atmospheric pressure, inhale casting under argon shield or adopt vacuum induction melting furnace to cast in copper mold under 0.25～0.75 standard atmospheric pressure argon shield and form.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3252192A4 (en) * | 2015-01-29 | 2018-02-28 | Nippon Koshuha Steel Co., Ltd. | Magnetostrictive member and method for manufacturing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103805839B (en) * | 2014-01-28 | 2016-01-06 | 北京麦吉凯科技有限公司 | The preparation method of magnetic hardening FeGa alloy |
| CN104862777B (en) * | 2015-05-19 | 2018-03-02 | 上海大学 | The method and device of directional solidification control crystal orientation under steady magnetic field |
| CN106555041B (en) * | 2016-11-30 | 2018-10-30 | 北京理工大学 | A method of improving FeGa alloy magnetostriction performances |
| CN108251753B (en) * | 2018-02-08 | 2020-11-20 | 东北大学 | Fe-Ga-based thin strip with high magnetostriction coefficient and preparation method thereof |
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| CN101003117A (en) * | 2007-01-19 | 2007-07-25 | 北京航空航天大学 | A sort of Fe-Ga magnetostriction alloy wire and preparation method |
| CN101109057A (en) * | 2006-07-17 | 2008-01-23 | 北京有色金属研究总院 | <100> Fe-Ga magnetostriction material on axial orientation and method of preparing the same |
| CN101262039A (en) * | 2007-03-05 | 2008-09-10 | 有研稀土新材料股份有限公司 | Fe-Ga base magnetism driven elastic silk and part using this material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101109057A (en) * | 2006-07-17 | 2008-01-23 | 北京有色金属研究总院 | <100> Fe-Ga magnetostriction material on axial orientation and method of preparing the same |
| CN101003117A (en) * | 2007-01-19 | 2007-07-25 | 北京航空航天大学 | A sort of Fe-Ga magnetostriction alloy wire and preparation method |
| CN101262039A (en) * | 2007-03-05 | 2008-09-10 | 有研稀土新材料股份有限公司 | Fe-Ga base magnetism driven elastic silk and part using this material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3252192A4 (en) * | 2015-01-29 | 2018-02-28 | Nippon Koshuha Steel Co., Ltd. | Magnetostrictive member and method for manufacturing same |
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