CN106498138A - A kind of multiphase nano lamellar alloy material and preparation method thereof - Google Patents
A kind of multiphase nano lamellar alloy material and preparation method thereof Download PDFInfo
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- CN106498138A CN106498138A CN201610916282.9A CN201610916282A CN106498138A CN 106498138 A CN106498138 A CN 106498138A CN 201610916282 A CN201610916282 A CN 201610916282A CN 106498138 A CN106498138 A CN 106498138A
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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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, 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
- 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
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Abstract
The invention discloses a kind of multiphase nano lamellar alloy material and preparation method thereof, including alloy, the alloy is contained within heterogeneous structure, the heterogeneous structure is organized for nano lamellar, the material has good intensity and plasticity, and anti-radiation performance is preferably, simple and stable structure, interface cohesion is tight, and preparation method is simple.
Description
Technical field
The invention belongs to metal material field, is related to a kind of multiphase nano lamellar alloy material and preparation method thereof.
Background technology
In recent years, nuclear energy causes the extensive concern of countries in the world as a kind of new green power of high-energy-density.
But in order to ensure the safety of nuclear power station, design prepares the safer used by nuclear reactor structural metallic materials of a new generation just becomes one
The important research topic of item.The design of material will be carried out, the strong radiation environment in nuclear reactor for the Service Environment of material
Determine that the structural metallic materials for nuclear reactor must have outstanding radiation hardness, high-strength tenacity, hyperpyrexia steady
Qualitative and corrosion resistance etc..
At present, the main thought of design Flouride-resistani acid phesphatase structural metallic materials is to introduce substantial amounts of interfacial structure in the material, from
And accelerate irradiation defect to material internal interfacial segregation, promote irradiation defect to bury in oblivion mutually, reduce irradiation damage.Meanwhile, because
Interface plays the role of to hinder dislocation motion, and according to Hall-Petch relations, in material, substantial amounts of interfacial structure can be effectively improved
The intensity of material, improves the comprehensive mechanical property of material.In recent years, Han et al. is proposed and is designed Flouride-resistani acid phesphatase by interface engineering
Material, they make full use of by substantial amounts of copper present in nano lamellar copper-niobium composite obtained in continuous ply rolling technology-
Niobium boundary absorbing a large amount of point defects that irradiation is caused, while this nano lamellar composite has good mechanical property
With high high-temp stability [Weizhong Han, et al.Advanced Materials, 2013,25,6975-6979].Additionally,
Fang et al. has been reported not only has high intensity by intersecting nano lamellar copper-tantalum composite obtained in continuous ply rolling technology,
Preferable plasticity, also has a good heat endurance, during so excellent performance is just because of nano lamellar copper-tantalum composite
There is substantial amounts of boundary [Qianfeng Fang, et al.Acta Materialia, 2016,110,341-351].However,
During applying continuous ply rolling technology to prepare nano lamellar composite, problems with often occurs：On the one hand, local becomes
After the shear band that shape is introduced can cause large deformation, interface becomes not parallel each other and edge crack too early, so as to limit stratiform
The thickness limit of material has simultaneously had a strong impact on combination property and structural stability [Marko Knezevic, the et of stratified material
al.International Journal of Plasticity,2014,57,16-28].On the other hand, due to continuous ply rolling skill
The shortcoming of art, such as different metal rely on severe plastic deformation to reach combination between layers, so interfacial bonding strength is very low
[Weizhong Han, et al.Acta Materialia, 2014,63,150-161], so that greatly reduce nano lamellar material
The mechanical property of material and radiation hardness.
For shear band and the problem of edge crack, at present, scholars improve continuous ply rolling technology.Such as：
Carpenter et al. is by introducing at 575 DEG C of insulations intermediate annealing of one hour during the continuous ply rolling of zirconium-niobium system
The thickness in monolayer of the zirconium of continuous ply rolling-niobium laminar composite is successfully reduced to 90nm from 28 μm by reason
[J.S.Carpenter,et al.Materials Research Letters,2014,1].Additionally, Fang et al. is by combining
The continuous ply rolling technology of the intersection of intermediate annealing, successfully inhibits the plasticity unstability and edge that occur in process to split
Line, has been obtained nano lamellar copper-tantalum composite [Qianfeng Fang, et al.Acta that thickness is 50nm
Materialia,2016,110,341-351].However, for the Equations of The Second Kind problem of continuous ply rolling technology generally existing, i.e. interlayer
Bond strength is very low, easily becomes the problem in material failure source, does not have good method to solve so far yet.In addition, although on
The problem that two schemes efficiently solve shear band and edge crack is stated, but the preparation technology of both nano lamellar materials is equal
The preparation flow of this material is made to become loaded down with trivial details.The intermediate annealing step that such as Carpenter et al. is introduced needs to roll in difference
Annealing process is introduced repeatedly between passage processed, extend material preparation process；The continuous ply rolling technology of intersection that Fang et al. is introduced
Need between different rolling passes to turn to material, increased the complexity of preparation technology, these are all unfavorable for dropping
The production cost of low this material, so that affect industrialized production.In addition, multiple based on nano lamellar obtained in continuous ply rolling technology
In condensation material, substantial amounts of almost parallel boundary is not only existed, inside each lamella, also there is substantial amounts of crystal boundary.In high temperature bar
Under part, high energy crystal boundary is possible to change to low energy phase boundary, forms groove in crystal boundary with the intersection of phase boundary, this so as to affect
Heat endurance [Qianfeng Fang, et al.Acta Materialia, the 2016,110,341- of nano lamellar composite
351].
In a word, protocol questions are prepared for the material of strong radiation environment and its processing suitable for nuclear reactor, is still needed
Research and develop a kind of simple and fast and can guarantee that the solution of its good military service performance.
Content of the invention
It is an object of the invention to overcoming the shortcoming of above-mentioned prior art, there is provided a kind of multiphase nano lamellar alloy material
And preparation method thereof, the material has good intensity and plasticity, and anti-radiation performance is preferably, simple and stable structure, interface
It is tightly combined, and preparation method is simple.
For reaching above-mentioned purpose, multiphase nano lamellar alloy material of the present invention includes alloy, and the alloy is included
There is heterogeneous structure, the heterogeneous structure is organized for nano lamellar.
Alloy is zirconium-niobium alloy, Kufil, steel, titanium alloy, magnesium alloy or aluminium alloy.
Mutually include close-packed hexagonal phase, body-centered cubic phase, face-centered cubic phase and noncrystal phase in heterogeneous structure.
In nano lamellar tissue, single-phase thickness is 1nm-10000nm.
The preparation method of multiphase nano lamellar alloy material of the present invention is comprised the following steps：
Alloy is taken, and predeformation is carried out to alloy, then the alloy is heated and is incubated, then alloy is carried out cold
But, make in alloy, to form heterogeneous structure, then alloy is carried out rolling, drawing and annealing, make the heterogeneous structure in alloy be changed into receiving
Rice lamellar tissue, obtains multiphase nano lamellar alloy material.
The heating-up temperature heated by the alloy is more than or equal to heterogeneous region in the corresponding phasor of alloy or monophase field most
Low transition temperature.
Alloy is cooled down by the way of air cooling, oil cooling or water-cooled.
The preparation method of multiphase nano lamellar alloy material of the present invention is comprised the following steps：
The alloy containing eutectoid or eutectic composition is taken, and predeformation is carried out to the alloy, then alloy is heated simultaneously
Insulation, then cools down to alloy, makes the heterogeneous structure for forming sheet in alloy, then the alloy is carried out rolling, drawn
Pull out and make annealing treatment, make the heterogeneous structure in alloy become nano lamellar tissue, obtain multiphase nano lamellar alloy material.
Using stove is cold, air cooling, alloy is cooled down by the way of oil cooling or water-cooled.
Eutectoid or eutectic transformation temperature of the heating-up temperature heated by alloy more than or equal to alloy.
The invention has the advantages that：
Multiphase nano lamellar alloy material of the present invention includes alloy, and the alloy is contained within heterogeneous structure, and this is more
Phase constitution is organized for nano lamellar, is reached the effect for absorbing irradiation defect by substantial amounts of boundary, is improve the anti-spoke of material
According to performance, while substantial amounts of boundary causes this kind of material that there is high intensity and plasticity and good comprehensive mechanical property,
In addition, in preparation process, predeformation is carried out to alloy first, by being heated to alloy, being incubated and cooled down, so as to be had
There is the alloy of heterogeneous structure, then the alloy is carried out rolling, drawing and annealing, obtain multiphase nano lamellar alloy material, prepare
Process is simple, feasible, can be applied to industrialized production, and alloy is carried out rolling in manufacturing process, drawing and annealing,
Therefore closely, simple and stable structure, while single is low for the interface cohesion of multiphase nano lamellar alloy material of the present invention
Energy boundary causes material structure of the present invention stable.In practical operation, can according to different requirement adjust heating and
The temperature of insulation, time, to control ratio and the composition of heterogeneous structure, realize the tune to multiphase nano lamellar alloy material performance
Control.
Description of the drawings
Fig. 1 is a kind of flow chart of the present invention；
Fig. 2 is the flow chart of another of the present invention；
Fig. 3 is the flow chart of another of the present invention；
Fig. 4 is the flow chart of another of the present invention；
Fig. 5 is the flow chart of another of the present invention；
Fig. 6 is the stereoscan photograph of the present invention in embodiment one；
Fig. 7 is the tensile property test result figure of the present invention in embodiment one；
Fig. 8 is the stereoscan photograph of the present invention in embodiment two；
Fig. 9 is the stereoscan photograph of the present invention in embodiment three.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail：
Multiphase nano lamellar alloy material of the present invention includes alloy, and the alloy is contained within heterogeneous structure, described
Heterogeneous structure is organized for nano lamellar.
Alloy is zirconium-niobium alloy, Kufil, steel, titanium alloy, magnesium alloy or aluminium alloy；Mutually including in heterogeneous structure is close
Row's hexagonal phase, body-centered cubic phase and face-centered cubic phase and noncrystal phase；In nano lamellar tissue, single-phase thickness is 1nm-
10000nm.
The preparation method of multiphase nano lamellar alloy material of the present invention is comprised the following steps：
Alloy is taken, and predeformation is carried out to alloy, then the alloy is heated and is incubated, then alloy is carried out cold
But, make in alloy, to form heterogeneous structure, then alloy is carried out rolling, drawing and annealing, make the heterogeneous structure in alloy be changed into receiving
Rice lamellar tissue, obtains multiphase nano lamellar alloy material.
The heating-up temperature heated by the alloy is more than or equal to heterogeneous region in the corresponding phasor of alloy or monophase field most
Low transition temperature.
Alloy is cooled down by the way of air cooling, oil cooling or water-cooled.
The preparation method of multiphase nano lamellar alloy material of the present invention is comprised the following steps：
The alloy containing eutectoid or eutectic composition is taken, and predeformation is carried out to the alloy, then alloy is heated simultaneously
Insulation, then cools down to alloy, makes the heterogeneous structure for forming sheet in alloy, then the alloy is carried out rolling, drawn
Pull out and make annealing treatment, make the heterogeneous structure in alloy become nano lamellar tissue, obtain multiphase nano lamellar alloy material.
Using stove is cold, air cooling, alloy is cooled down by the way of oil cooling or water-cooled.
Eutectoid or eutectic transformation temperature of the heating-up temperature heated by alloy more than or equal to alloy.
Embodiment one
Zirconium-niobium alloy is taken, predeformation is carried out to which first, then zirconium-niobium alloy is placed in insulation 10- in 850-950 DEG C of environment
25min, subsequently takes out the zirconium-niobium alloy, and carries out air cooling to which.
With reference to Fig. 6, through 850-950 DEG C of insulation 10-25min and air cooling zirconium-niobium alloy its be organized as heterogeneous structure, and
And the heterogeneous structure assumes layered arrangement, single-phase thickness is about 50-400nm.
Stretching experiment is carried out to the present invention, the engineering stress-strain curve for obtaining as shown in fig. 7, Fig. 7 shows, the present invention
There is higher intensity, its tensile strength is about 602MPa, fracture elongation is about 36%, illustrate the present invention with higher strong
Degree and good comprehensive mechanical property.
Embodiment two
Zirconium-niobium alloy is taken, predeformation is carried out to which first, then zirconium-niobium alloy is placed in insulation 10- in more than 950 DEG C of environment
25min, subsequently takes out the zirconium-niobium alloy, and carries out air cooling to which.
With reference to Fig. 8, through 950 DEG C of temperatures above insulation 10-25min and air cooling zirconium-niobium alloy its be organized as multiphase group
Knit, and the heterogeneous structure assumes layered arrangement, single-phase thickness is about 50-500nm.
Embodiment three
The Kufil of eutectic composition is taken, Kufil is placed in insulation 1h in 1200 DEG C of argon gas protection environment, subsequently
Stove is carried out to the Kufil cold, obtain heterogeneous structure, deflection is carried out to the Kufil containing heterogeneous structure then and is about
90% rolling deformation, its tissue topography's figure refer to Fig. 9.
In addition, those skilled in the art can be to do other changes in spirit of the invention, these are according to present invention spirit
The change that is done, should all be included in scope of the present invention.
Claims (10)
1. a kind of multiphase nano lamellar alloy material, it is characterised in that including alloy, the alloy is contained within heterogeneous structure, institute
State heterogeneous structure to organize for nano lamellar.
2. multiphase nano lamellar alloy material according to claim 1, it is characterised in that alloy is zirconium-niobium alloy, copper silver
Alloy, steel, titanium alloy, magnesium alloy or aluminium alloy.
3. multiphase nano lamellar alloy material according to claim 1, it is characterised in that mutually including in heterogeneous structure is close
Row's hexagonal phase, body-centered cubic phase, face-centered cubic phase and noncrystal phase.
4. multiphase nano lamellar alloy material according to claim 3, it is characterised in that single-phase in nano lamellar tissue
Thickness is 1nm-10000nm.
5. the preparation method of the multiphase nano lamellar alloy material described in a kind of claim 1, it is characterised in that including following step
Suddenly：
Alloy being taken, and predeformation being carried out to alloy, then the alloy is heated and is incubated, then alloy is cooled down,
Make in alloy, to form heterogeneous structure, then alloy is carried out rolling, drawing and annealing, make the heterogeneous structure in alloy be changed into nanometer layer
Shape is organized, and obtains multiphase nano lamellar alloy material.
6. the preparation method of multiphase nano lamellar alloy material according to claim 5, it is characterised in that to the alloy
Minimum transition temperature of the heating-up temperature for being heated more than or equal to heterogeneous region or monophase field in the corresponding phasor of alloy.
7. the preparation method of multiphase nano lamellar alloy material according to claim 5, it is characterised in that using air cooling,
The mode of oil cooling or water-cooled is cooled down to alloy.
8. the preparation method of the multiphase nano lamellar alloy material described in a kind of claim 1, it is characterised in that including following step
Suddenly：
The alloy containing eutectoid or eutectic composition is taken, and predeformation is carried out to the alloy, then alloy is heated and is incubated,
Then alloy is cooled down, make the heterogeneous structure that sheet is formed in alloy, then the alloy is carried out rolling, drawing and is moved back
Fire is processed, and is made the heterogeneous structure in alloy become nano lamellar tissue, is obtained multiphase nano lamellar alloy material.
9. the preparation method of multiphase nano lamellar alloy material according to claim 8, it is characterised in that using stove cold,
The mode of air cooling, oil cooling or water-cooled is cooled down to alloy.
10. the preparation method of multiphase nano lamellar alloy material according to claim 8, it is characterised in that alloy is entered
Eutectoid or eutectic transformation temperature of the heating-up temperature of row heating more than or equal to alloy.
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Cited By (1)
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Application publication date: 20170315 |