CN108728777A - A kind of iron-base nanometer crystal alloy and preparation method thereof - Google Patents
A kind of iron-base nanometer crystal alloy and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major constituent
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/003—Making ferrous alloys making amorphous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/03—Amorphous or microcrystalline structure
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2200/00—Crystalline structure
- C22C2200/02—Amorphous
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2200/00—Crystalline structure
- C22C2200/04—Nanocrystalline
Abstract
The present invention provides one kind such as formula FeaBbCucHfdShown in iron-base nanometer crystal alloy, wherein a, b, c indicate the atomic percentage content of corresponding component with d respectively；A=86~87, b=12~13, c=0.4~0.5, d=0.5~0.6, c+d=1.0, a+b+c+d=100.Present invention also provides the preparation methods of the iron-base nanometer crystal alloy.The application improves the amorphous formation ability and saturation induction density of Fe-based amorphous/nanometer crystal alloy of rich iron content by adjusting the ingredient and preparation method of iron-base nanometer crystal alloy.
Description
Technical field
The present invention relates to ferrous alloy material technical field more particularly to a kind of iron-base nanometer crystal alloy and its preparation sides
Method.
Background technology
Solid matter in nature, it is multifarious macroscopically to show as various type, different properties, purposes, but from microcosmic
In the angle of atomic arrangement structure, it is mainly summarised as following three classes：1) the well-regulated geometric shape of crystalline structure-tool, atom row
Row, which are presented, periodically to be repeated, using certain molecule, atom or ion as minimum unit；2) quasi-crystalline state structure-is without translation
It is repeated cyclically, but there is certain sequence of positions；3) amorphous structure-atom is in confusing array, structure aperiodicity, does not claim
Property.
For material, ingredient is basis, tissue be it is crucial, the difference of microstructure determine material in following process and
Using upper difference, composition design and one of the research that regulating microstructure is always that researcher is keen to the most.From heating power
Learn stability on say, amorphous structure is a kind of high energy metastable state tissue between stabilization and unstable state, when by
When the excitation of outside energy, it can spontaneously be changed into crystalline structure.The method for obtaining amorphous structure has：It quickly solidifies, is solid
Precursor reactant, vapor deposition, mechanical alloying, laser treatment and ion implanting etc..It is said from the angle of atom combination, amorphous structure
Mainly it is combined into metallic bond, it is confusing in the permutation and combination of atom, it is that short distance is unordered in microstructure, there is no bright
The defects of aobvious dislocation, precipitate, crystal boundary.As structural material or coating material, the high intensity of amorphous structure, high rigidity,
High-wearing feature, corrosion resistance present excellent characteristic, receive the favor of numerous instruments, electronic device manufacturer, as
The excellent soft magnet performance obtained after functional material, especially Fe-based amorphous alloy crystallization, be power electronic product miniaturization,
High efficiency, energy-saving, precise treatment provide broader magnetic material selection space.Therefore, the architectural characteristic that amorphous alloy has
With functional characteristic so that it has huge application value and social effect in various fields.
Fe-based amorphous alloy, the features such as due to abundant material source, cheap cost, good soft magnet performance, right and wrong
One kind of earliest, most widely used and the hottest handful is developed in peritectic alloy system.Fe-based amorphous alloy soft magnetic materials is conduct earliest
Distribution transformer iron core, master iron core, reactance iron core alternative materials are applied.Compared to silicon steel sheet, there is similar saturation magnetic
Induction (Bs), low coercivity (Hc), high magnetic permeability (μi) and low loss (W).Under power frequency state, zero load damage
Consumption be silicon steel sheet 1/5th arrive one third, with good economic efficiency and social effect.
Iron-base nanometer crystal alloy after crystallization and thermal treatment, is formed and is received on noncrystal substrate by amorphous state band of quenching
α-Fe the crystal grain of meter ruler cun is particularly suitable for obtaining higher magnetic permeability, frequency characteristic and impedance operator in inversion iron core, filter
Wave iron core, transformer iron core, core of reactor field use.In recent years, with new-energy automobile, smart home, artificial intelligence
Energy and traffic track are grown rapidly, and new requirement is proposed to material, the New Iron-rich with more high saturated magnetic induction
Amorphous/nanocrystalline material quietly rises.But the amorphous formation ability of the system alloy is limited, in preparation process easily
Crystallization forms superfine nano particle, and size is between forming core cluster and X-ray detection range.Simultaneously as this kind of material
Material lacks grain growth inhibitor, and α-Fe crystallization process is difficult to control and causes coarse grains, seriously affects its industrial applications
Process.Rich iron non-crystaline amorphous metal be difficult to obtain completely amorphous state quench state band the shortcomings that, seriously hinder it and answer on a large scale
Paces.Therefore, the preparation for solving the state band of quenching of rich iron amorphous, should first improve its Forming ability, that is, obtain amorphous formation
The strong alloying component of ability introduces crystallization inhibitor, regulates and controls the crystallization process of its α-Fe phase, and it is brilliant to obtain tiny and uniform α-Fe
Grain, it is ensured that saturation flux density (Bs) reach 1.9T and initial magnetic rate reaches 16000~25000.
Commercialized Fe-based amorphous/nanocrystalline application has recent two decades, and new is Fe-based amorphous/nanocrystalline soft
Permalloy material has urgent demand.In order to comply with the trend of modern product energy-saving and environmental protection, miniaturization, it is connected to iron
Base amorphous/nanocrystalline and silicon steel sheet and Fe-based amorphous/nanocrystalline performance interval between ferrite of connection, rich iron amorphous/receive
The brilliant magnetically soft alloy material of rice becomes a new research boom.
2009, wild evident macro et al. report about rich iron Fe-Si- is herded by metal material research institute of northeastern Japan university
The amorphous/nanocrystalline alloy of B-P-Cu systems, which has high magnetic conductivity and high saturation flux density simultaneously, and is saturated
Magnetic flux density is very close to orientation silicon steel, and magnetic conductivity can reach ten times of silicon steel, and the trade name of the alloy is
"Nanomet".Fe-based amorphous/the nanometer crystal alloy of one kind is provided as a result, to have very important significance.
Invention content
Present invention solves the technical problem that being to provide a kind of iron-base nanometer crystal alloy of high saturated magnetic induction, have
There is preferable amorphous formation ability.
In view of this, this application provides one kind iron-base nanometer crystal alloy as shown in formula (I),
FeaBbCucHfd(Ⅰ)；
Wherein, a, b, c indicate the atomic percentage content of corresponding component with d respectively；
A=86~87, b=12~13, c=0.4~0.5, d=0.5~0.6, c+d=1.0, a+b+c+d=100.
Preferably, it is the atomic percent of 13%, Cu that the atomic percentage content of the Fe, which is the atomic percentage content of 86%, B,
The atomic percentage content that content is 0.5%, Hf is 0.5%.
Preferably, it is the atomic percent of 13%, Cu that the atomic percentage content of the Fe, which is the atomic percentage content of 86%, B,
The atomic percentage content that content is 0.4%, Hf is 0.6%.
Preferably, the atomic percentage content of the Fe is 86.2%~86.7%.
Preferably, the atomic percentage content of the B is 12.3%~12.6%.
Present invention also provides the preparation methods of the iron-base nanometer crystal alloy, include the following steps：
By raw material according to atomic percentage content dispensing, the raw material after dispensing is subjected to melting, obtains melt；
By the melt spray at ferrous alloy band；The ferrous alloy band is heat-treated, iron-based is obtained and receives
Rice peritectic alloy；
The heat treatment includes the normative heat treatment carried out successively and magnetic-field heat treatment；
The normative heat treatment is specially：The ferrous alloy band is warming up to first object temperature with the first heating speed
Degree keeps the temperature t1min, then is warming up to the second target temperature with the second heating rate, keeps the temperature t2min, cooling；
The magnetic-field heat treatment is specially：Ferrous alloy band after normative heat treatment is warming up to third heating rate
Third target temperature keeps the temperature t3min, applies external magnetic field in insulating process, cooling.
Preferably, the first heating speed is 2~10 DEG C/min, and second heating rate is 1 DEG C/min, described the
Three heating rates are 5~7 DEG C/min.
Preferably, the first object temperature is 350~400 DEG C, and second target temperature is 450~550 DEG C, described
Third target temperature is 380~400 DEG C；The t1 be 60~90min, the t2 be 90~120min, the t3 be 60~
120min。
Preferably, the intensity of the external magnetic field is 800~1200Gs.
This application provides one kind such as formula FeaBbCucHfdShown in rich iron content iron-base nanometer crystal alloy, which receives
Rice peritectic alloy improves the amorphous formation ability of alloy with a small amount of hafnium, has regulated and controled during being quickly cooled down due to copper atom cluster
The precipitation of caused crystallization phenomenon and compound maintains the solid-state heredity effect of the disperse state of copper under liquid condition
It answers, and the Modulatory character with good α-Fe phases.
On the other hand, the application first uses normative heat treatment regulation and control α-Fe during preparing iron-base nanometer crystal alloy
The precipitation of phase transformation obtains best saturation induction density, and the coercive of alloy is then reduced by the way of magnetic-field heat treatment
Power, so as to get iron-base nanometer crystal alloy have excellent magnetic property.
Description of the drawings
Fig. 1 is the XRD photos of iron-base nanometer crystal alloy prepared by the embodiment of the present invention；
Fig. 2 is the DSC exotherms of iron-base nanometer crystal alloy prepared by the embodiment of the present invention；
Fig. 3 is the XRD of precipitated phase of the iron-base nanometer crystal alloy of the preparation of the embodiment of the present invention 1 after different heat treatment temperature
Photo；
Fig. 4 is the XRD of precipitated phase of the iron-base nanometer crystal alloy of the preparation of the embodiment of the present invention 2 after different heat treatment temperature
Photo；
Fig. 5 is the front and back contrast curve of VSM heat treatments of iron-base nanometer crystal alloy prepared by the embodiment of the present invention 1；
Fig. 6 is the front and back contrast curve of VSM heat treatments of iron-base nanometer crystal alloy prepared by the embodiment of the present invention 2.
Specific implementation mode
For a further understanding of the present invention, the preferred embodiment of the invention is described with reference to embodiment, still
It should be appreciated that these descriptions are only the feature and advantage further illustrated the present invention, rather than to the claims in the present invention
Limitation.
In view of the fine magnetic property that iron-base nanometer crystal alloy has, this application provides a kind of iron-base nanometer crystal alloy, with
Phase improves the saturation induction density and amorphous formation ability of iron-base nanometer crystal alloy.Specifically, the present invention provides a kind of iron
Based Nanocrystalline Alloys, the alloy are the elements based on metal ferro element, and other metal and metalloid element microalloyings are added
Afterwards, alloy is quickly cooled down gained in molten condition, which improves the non-of Fe-based amorphous alloy by adjusting the content of element
Brilliant Forming ability, the Modulatory character of amorphous thermal stability and α-Fe phase crystallization process.Specifically, the embodiment of the present invention discloses
A kind of as shown in formula (I) iron-base nanometer crystal alloy,
FeaBbCucHfd(Ⅰ)；
Wherein, a, b, c indicate the atomic percentage content of corresponding component with d respectively；
A=86~87, b=12~13, c=0.4~0.5, d=0.5~0.6, c+d=1.0, a+b+c+d=100.
In above-mentioned iron-base nanometer crystal alloy, the atomic percentage content of Fe is 86%~87%, and raw material includes but unlimited
In selection ingot iron.The atomic percentage content of the Fe can be selected from 86%, 86.2%, 86.5%, 86.7% or 87%.
The boron element atomic percentage content is 12%~13%, including but not limited to chooses industrial ferro-boron as former material
Material.The atomic percentage content of the B can be selected from 12.3%, 12.2%, 12.5%, 12.7%, 12.8% or 13%.
The copper atomic percentage content is 0.4%~0.5%, including but not limited to chooses industrial electrolysis copper as former
Material；The hafnium Elements Atom percentage composition including but not limited to chooses industrial hafnium or hafnium iron as former material up to 0.5~0.6%
Material.The application has regulated and controled the process of being quickly cooled down with hafnium partial alternative copper while improving the amorphous formation ability of alloy
In the crystallization phenomenon caused by copper atom cluster, maintain the disperse state of copper under liquid condition solid-state heredity effect
It answers, and shows the Modulatory character of α-Fe phase crystallization process.
In a particular embodiment, this application provides two kinds of specific iron-base nanometer crystal alloys：Fe86B13Cu0.5Hf0.5
And Fe86B13Cu0.4Hf0.6.
Present invention also provides a kind of preparation methods of iron-base nanometer crystal alloy, include the following steps：
By the melt spray at ferrous alloy band；The ferrous alloy band is heat-treated, iron-based is obtained and receives
Rice peritectic alloy；
The heat treatment includes the normative heat treatment carried out successively and magnetic-field heat treatment；
The normative heat treatment is specially：The ferrous alloy band is warming up to first object temperature with the first heating speed
Degree keeps the temperature t1min, then is warming up to the second target temperature with the second heating rate, keeps the temperature t2min, cooling；
The magnetic-field heat treatment is specially：Ferrous alloy band after normative heat treatment is warming up to third heating rate
Third target temperature keeps the temperature t3min, applies external magnetic field in insulating process, cooling.
It is above-mentioned prepare iron-base nanometer crystal alloy during, by using suitable heat treatment process, obtained a small amount of
The composite construction of amorphous state+mutually nanocrystalline main phase α-Fe, finally improves the saturation induction density of iron-base nanometer crystal alloy, drops
Low coercivity.
It is above-mentioned prepare iron-base nanometer crystal alloy during, the dispensing, melting and spray are people in the art
Technological means known to member, herein without particularly illustrating.
The mode of nanocrystalline ferrous alloy in order to obtain, herein described heat treatment is the normative heat treatment carried out successively
With magnetic-field heat treatment.During normative heat treatment, the first heating speed is 2~10 DEG C/min, the first object
Temperature be 350~400 DEG C, soaking time t1 be 60~90min, in a particular embodiment, the first heating speed be 10 DEG C/
Min, the first object temperature are 400 DEG C, and soaking time t1 is 60min；Second heating rate be 1 DEG C/min, second
Target temperature is 450~550 DEG C, and soaking time t2 is 90~120min, and in a particular embodiment, second heating rate is
1 DEG C/min, the second target temperature is 475 DEG C, and soaking time t2 is 90；The mode of the cooling by the way of furnace cooling,
And it is cooled to 200 DEG C or less and comes out of the stove.Above-mentioned first object temperature is less than the initial temperature of the first crystallization exothermic peak, above-mentioned heating speed
Degree can ensure that the uniformity of burner hearth inner alloy strip temperature with soaking time t1；Above-mentioned second target temperature is less than the first crystallization
The peak temperature of exothermic peak, above-mentioned second heating rate can ensure that the integrality of amorphous alloy crystallization process with soaking time t2；
Above range beyond heating rate, first object temperature and soaking time, then the performance of alloy be difficult to reach best saturation
Magnetic induction intensity, magnetic permeability and coercivity.
Magnetic-field heat treatment is carried out to the alloy material of obtained maximum saturation magnetic induction intensity after normative heat treatment, with drop
Low-coercivity.In magnetic-field heat treatment, the third heating rate is 5~7 DEG C/min, and third target temperature is 380~400
DEG C, soaking time t3 is 60~120min, and in a particular embodiment, the third heating rate is 6 DEG C/min, third target temperature
Degree is 380 DEG C, and soaking time t3 is 60min；Apply external magnetic field simultaneously in insulating process, the magnetic field intensity of external magnetic field is 800
Then~1200Gs cools to 200 DEG C or less with the furnace and comes out of the stove.Above-mentioned third heating rate, third target temperature and soaking time
Alloy interior atoms can be made to reach upper state, and grown up temperature far from α-Fe phase crystal grain, pass through external magnetic field as far as possible
Reduce its magnetocrystalline anisotropy.Above-mentioned third target temperature is too low, and magnetic permeability when high frequency is difficult to be promoted, and coercivity is larger；
Temperature is excessively high, and magnetic permeability drastically declines, while being easy to cause α-Fe phase coarse grains, further decreases magnetic permeability when low frequency.
For a further understanding of the present invention, iron-base nanometer crystal alloy provided by the invention is carried out with reference to embodiment detailed
Describe in detail bright, protection scope of the present invention is not limited by the following examples.
Embodiment 1
Dispensing is carried out according to the composition of alloy of Fe86B13Cu0.5Hf0.5；Using vacuum arc furnace ignition by raw metal melting,
Obtain molten metal；
By above-mentioned molten metal using belt spraying machine spray at 2~3 millimeters of width, the ferrous alloy band of 22~24 microns of thickness
Material；
The amorphous phase constitution of ferrous alloy band is tested using X-ray diffraction, then is put using DSC beta alloy former material phase transformations
Thermal spike determines that the first phase transformation heat release peak temperature is respectively 365 DEG C, the second phase under the conditions of heating rate is 20 DEG C/min
Become peak-to-peak value temperature as 513 DEG C；As depicted in figs. 1 and 2, Fig. 1 is the XRD photos of alloy strip steel rolled stock, and Fig. 2 is alloy strip steel rolled stock
DSC exotherm figures；The first phase transformation peak is chosen as heat treatment temperature point, using quick concussion heat treatment mode to former alloy strip
Material is effectively heat-treated；Process of thermal treatment is specially：
Above-mentioned alloy strip steel rolled stock is warming up to 400 DEG C with 10 DEG C/min heating rates, keeps the temperature 60min, then heat up with 1 DEG C/min
Speed is warming up to 475 DEG C, keeps the temperature 90min, cools to 200 DEG C with the furnace and come out of the stove；
Ferrous alloy band obtained above is warming up to 380 DEG C with 6 DEG C/min heating rates, 60min is kept the temperature, kept the temperature
Apply external magnetic field 1000Gs in journey, cools to 180 DEG C with the furnace and come out of the stove, obtain iron-base nanometer crystal alloy.
Fig. 3 is XRD photo of the iron-base nanometer crystal alloy manufactured in the present embodiment in the precipitated phase of different heat treatment temperature, figure
5 be contrast curve before and after the VSM heat treatments of iron-base nanometer crystal alloy manufactured in the present embodiment, by Fig. 3 and Fig. 5 it is found that former close
Gold ribbon material has intact amorphous structure, after 475 DEG C of heat treatment, has uniform α-Fe mutually nanocrystalline.
Using the front and back saturation induction density of VSM beta alloy bands heat treatment and MATS2010SD synthesis soft magnetism tests
The front and back coercivity of beta alloy band heat treatment, test result are as shown in table 1.
Embodiment 2
Preparation method is same as Example 1, difference lies in：Composition of alloy is Fe86B13Cu0.4Hf0.6；Heat treatment process
It is identical.
Fig. 4 is XRD photo of the iron-base nanometer crystal alloy manufactured in the present embodiment in the precipitated phase of different heat treatment temperature, figure
6 be contrast curve before and after the VSM heat treatments of iron-base nanometer crystal alloy manufactured in the present embodiment, by Fig. 4 and Fig. 6 it is found that former close
Gold ribbon material has intact amorphous structure, after 475 DEG C of heat treatment, has uniform α-Fe mutually nanocrystalline.
Using the front and back saturation induction density of VSM beta alloy bands heat treatment and MATS2010SD synthesis soft magnetism tests
The front and back coercivity of beta alloy band heat treatment, test result are as shown in table 1.
The front and back performance data table of ferrous alloy band heat treatment that 1 embodiment 1 of table is prepared with embodiment 2
Remarks：N-Field is the coercivity after normative heat treatment, and M-Field is secondary magnetic field treated coercivity.
As shown in Table 1, the saturation induction density (M for the iron-base nanometer crystal alloy that prepared by embodiment 1s) it is 206.2emu/
G, after magnetic field is handled, coercivity (Hc) it is 2.8A/m；The saturation induction density of iron-base nanometer crystal alloy prepared by embodiment 2
For (Ms) it is 208.2emu/g, after magnetic field is handled, coercivity (Hc) it is 2.3A/m.
The explanation of above example is only intended to facilitate the understanding of the method and its core concept of the invention.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvement and modification are also fallen within the protection scope of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (9)
1. a kind of iron-base nanometer crystal alloy as shown in formula (I),
FeaBbCucHfd(Ⅰ)；
Wherein, a, b, c indicate the atomic percentage content of corresponding component with d respectively；
A=86~87, b=12~13, c=0.4~0.5, d=0.5~0.6, c+d=1.0, a+b+c+d=100.
2. iron-base nanometer crystal alloy according to claim 1, which is characterized in that the atomic percentage content of the Fe is
The atomic percentage content that the atomic percentage content that the atomic percentage content of 86%, B are 13%, Cu is 0.5%, Hf is 0.5%.
3. iron-base nanometer crystal alloy according to claim 1, which is characterized in that the atomic percentage content of the Fe is
The atomic percentage content that the atomic percentage content that the atomic percentage content of 86%, B are 13%, Cu is 0.4%, Hf is 0.6%.
4. iron-base nanometer crystal alloy according to claim 1, which is characterized in that the atomic percentage content of the Fe is
86.2%~86.7%.
5. iron-base nanometer crystal alloy according to claim 1, which is characterized in that the atomic percentage content of the B is
12.3%~12.6%.
6. the preparation method of Claims 1 to 5 any one of them iron-base nanometer crystal alloy, includes the following steps：
By raw material according to atomic percentage content dispensing, the raw material after dispensing is subjected to melting, obtains melt；
By the melt spray at ferrous alloy band；The ferrous alloy band is heat-treated, iron based nano crystal is obtained
Alloy；
The heat treatment includes the normative heat treatment carried out successively and magnetic-field heat treatment；
The normative heat treatment is specially：The ferrous alloy band is warming up to first object temperature with the first heating speed,
T1min is kept the temperature, then the second target temperature is warming up to the second heating rate, keeps the temperature t2min, it is cooling；
The magnetic-field heat treatment is specially：Ferrous alloy band after normative heat treatment is warming up to third with third heating rate
Target temperature keeps the temperature t3min, applies external magnetic field in insulating process, cooling.
7. preparation method according to claim 6, which is characterized in that the first heating speed is 2~10 DEG C/min, institute
It is 1 DEG C/min to state the second heating rate, and the third heating rate is 5~7 DEG C/min.
8. preparation method according to claim 6, which is characterized in that the first object temperature is 350~400 DEG C, institute
It is 450~550 DEG C to state the second target temperature, and the third target temperature is 380~400 DEG C；The t1 is 60~90min, institute
It is 90~120min to state t2, and the t3 is 60~120min.
9. preparation method according to claim 6, which is characterized in that the intensity of the external magnetic field is 800~1200Gs.
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| CN109722517A (en) * | 2018-11-20 | 2019-05-07 | 广东工业大学 | A kind of high-performance Fe-based amorphous nanocrystalline alloy heat treatment method |
| CN112951343A (en) * | 2021-01-20 | 2021-06-11 | 桂林电子科技大学 | Machine learning-based iron-based amorphous nano soft magnetic alloy design method |
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| CN112951343A (en) * | 2021-01-20 | 2021-06-11 | 桂林电子科技大学 | Machine learning-based iron-based amorphous nano soft magnetic alloy design method |
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