CN108998709A - A kind of preparation method of aluminium alloy - Google Patents
A kind of preparation method of aluminium alloy Download PDFInfo
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- CN108998709A CN108998709A CN201810955611.XA CN201810955611A CN108998709A CN 108998709 A CN108998709 A CN 108998709A CN 201810955611 A CN201810955611 A CN 201810955611A CN 108998709 A CN108998709 A CN 108998709A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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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
- 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
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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
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/053—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with zinc as the next major constituent
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Abstract
The invention belongs to technical field of metal material, more particularly, to the preparation method of a kind of combination metal intense plastic strain and the aluminium alloy of metal heat treatmet；The following steps are included: (1) prepares club-shaped material；(2) solution treatment；(3) it quenches；(4) it deforms；It simultaneously can be by heating mould, so that deformation can carry out at different temperatures in deformation process；(5) after deforming, cooling carries out ageing treatment；Mold is heated in deformation process using isometrical angular deformation technique by above technical scheme, and then changes the deformation temperature of material, while artificial aging processing is carried out to material using the deformation temperature as subsequent aging temp.Two kinds of strengthening mechanisms of this method combination refined crystalline strengthening and ageing strengthening have found a kind of processing technology of template type for Al-Zn-Mg-Cu aluminum alloy, can greatly improve the corrosion resistance of the alloy, which is more widely applied.
Description
Technical field
The invention belongs to technical field of metal material, more particularly, to a kind of combination metal intense plastic strain and metal fever
The preparation method of the aluminium alloy of processing.
Background technique
Al-Zn-Mg-Cu aluminum alloy is otherwise known as 7XXX line aluminium alloy, which has that intensity is high, specific gravity is small, can add
Work performance is good and has good thermal effectiveness, is widely used in aerospace industry and the various products for civilian use.
More and more applied among different environment with the alloy, the complicated variation of working environment is to the alloy comprehensive performance
Requirement it is also more harsh, it is accordingly required in particular to make up deficiency of the alloy on corrosion resistance.
By tension that the ageing strengthening of alloy effect is more to improve the alloy in existing production technology
Intensity, so that the alloy is in the environment that chloride ion is enriched with, the hardening constituent of the alloy surface and the chloride ion phase interaction in environment
It with to which local corrosion occur, further corrodes, the mechanical property that will have a direct impact on the alloy causes to fail or be broken.So that
The application of the alloy is limited by very large.How Al-Zn-Mg-Cu aluminum alloy original mechanical property is kept
In the case of, effectively improve the corrosion resistance of the alloy, is of great significance for being widely used for the alloy.
In recent years, severe plastic deformation (SPD) technology passes through drop due to that can prepare Ultra-fine Grained or even nanocrystalline structure
The crystallite dimension of low material improves the extensive concern that material property causes numerous scholars in a manner of refined crystalline strengthening.Typically
Severe plastic deformation technology includes isometrical angular deformation (ECAP), high pressure torsion (HPT) and accumulation pack rolling (ARB) etc..It is wherein isometrical
Angular deformation can not change material shape, sectional area it is constant while a large amount of shear strain is introduced into material, thus make
Materials microstructure is refined, hardening constituent is evenly distributed, improve the mechanical property and corrosion resistance of material.
Summary of the invention
The technical problem to be solved by the present invention is overcoming deficiency in the prior art, a kind of strong plasticity of combination metal is provided
The preparation method with the aluminium alloy of metal heat treatmet is deformed, alloy made from the preparation method had both guaranteed original mechanical property, together
The corrosion resistance of the Shi Tigao alloy.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of preparation method of aluminium alloy, the aluminium alloy are Al-Zn-Mg-Cu aluminium alloy, and wherein the quality percentage of each element contains
It measures as follows: Zn:6.10% ~ 6.67%, Mg:2.69% ~ 2.93%, Cu:1.81% ~ 1.88%, Cr:0.22% ~ 0.23%, Fe:0.15% ~
0.16%, surplus is the proportion of Al；
The preparation method comprises the following steps:
(1) machining of aluminium alloy embryo material is become to the club-shaped material for meeting deformation size；
(2) club-shaped material processed is placed in resistance furnace and carries out solution treatment；
(3) material is taken out after solution treatment from resistance furnace, and the material is immersed in tap water and is quenched；
(4) material is put into the mold of isometrical angular deformation and is deformed after quenching；It simultaneously can be by adding in deformation process
Mold heat, so that deformation can carry out at different temperatures；
(5) it after deforming, immerses the material into tap water and cools down, ageing treatment then is carried out to the material.
Further, the size of club-shaped material is the ㎜ × 100 of 11.4 ㎜ × 11.4 ㎜ in the step (1)3。
Further, the solid solution temperature in the step (2) is 470 DEG C, and the solution treatment time is 4h.
Further, the interval time that material is fetched into progress quenching process from resistance furnace in the step (3) is 10s
Within, the temperature for quenching used tap water is room temperature (23 ± 2) DEG C.
Further, the passage deformed in step (4) is 1 ~ 8 passage.
Further, select deformation path for Bc mode (every two when the passage of deformation is 2 passages or more in step (4)
Sample opposing mold export direction rotates clockwise 90 ° between secondary deformation).
Further, the temperature deformed in step (4) is room temperature (23 ± 2) DEG C between 400 DEG C.
Further, the temperature of tap water used in cooling down in step (5) is room temperature (23 ± 2) DEG C.
Further, the ageing treatment mode in step (5) includes natrual ageing or artificial aging processing.
It is using the beneficial effect of technical solution of the present invention:
1, by above technical scheme, to the heating of mold, material is changed in not equality of temperature using during isometrical angular deformation
Degree environment in deformed, while using the deformation temperature as the artificial aging temperature of the alloy carry out using, i.e., in combination with
Two kinds of strengthening effects of refined crystalline strengthening and ageing strengthening that alloy material comprehensive performance is had a direct impact, and for Al-Zn-
Mg-Cu line aluminium alloy has found a kind of processing technology of template type, can greatly improve the corrosion resistance of the alloy, so that should
Alloy can be more widely applied.
2, based on described above, technical scheme solves Al-Zn-Mg-Cu system aluminium in traditional experiment scheme first
The case where alloy is easy to produce fragmentation when introducing a large amount of deformations.By changing temperature when material deformation, so that this is that aluminium closes
The deformation of gold is carried out.Secondly, its internal grain is refined by multiformed aluminium alloy, while timeliness product or not
Coarse second phase that can be dissolved is grinded up also by deformation to be refined and is evenly distributed in material internal.The refinement of crystal grain in alloy
And hardening constituent refinement, be uniformly distributed the corrosion resistance for being conducive to improve the alloy material.Finally, due to when deforming
Temperature and deformation time can make the alloy material that timeliness occur while deformation process, and then influence the power of the alloy
Performance and corrosion resistance are learned, the present invention is both there is provided such a preparation method thus, is able to prepare and had both guaranteed original power
Performance is learned, while improving the corrosion resistance of the alloy.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is deformation process schematic diagram in embodiment 1；
Fig. 2 is the stress strain curve figure in embodiment 1 after material processing；
Fig. 3 is the electrochemical tests figure in embodiment 1 after material processing；
Fig. 4 is the result figure in embodiment 1 after material processing in intercrystalline corrosion test；
Fig. 5 is the result figure in embodiment 2 after material processing in intercrystalline corrosion test.
Specific embodiment
The following examples can make those skilled in the art that the present invention be more fully understood, but these embodiments are not
Limiting the scope of the invention." one embodiment " or " embodiment " referred to herein, which refers to, may be included in the present invention at least
A particular feature, structure, or characteristic in one implementation.In the present specification different places occur " in one embodiment
In " the same embodiment not is referred both to, nor the individual or selective embodiment mutually exclusive with other embodiments.
Deformation process is as shown in fig. 1, and deformation process is mainly participated in by 1 mold and 2 pressure heads, and 3 samples are put into mold
In after, push sample by the channel containing certain angle in mold using the pressure of pressure head, so that sample is logical by mold
By a large amount of shear stress when road bending place, so that a large amount of shear strains are introduced sample interior.
Embodiment 1
The chemical component (mass percent) of alloy are as follows: Zn:6.10%, Mg:2.69%, Cu:1.81%, simultaneously containing Fe, Si,
The total impurities such as Cr, Mn are less than 0.5%, surplus Al.
Alloy is processed as the ㎜ × 100 of 11.4 ㎜ × 11.4 ㎜ using machining3Rod-like samples, the sample that will be processed
Product, which are placed in resistance furnace, carries out solution treatment, and treatment temperature is 470 DEG C, and the processing time is 4h.By the material after solution treatment
Material takes out from resistance furnace, and will quench in the tap water of material immersion room temperature (23 ± 2) DEG C in 10s.After quenching
Sample is put into the mold for the isometrical angular deformation for having been heated to 150 DEG C and is deformed, deformation path is Bc mode (per twice
Sample opposing mold export direction rotates clockwise 90 ° between deformation), 4 passage deformations are carried out altogether, and one is utilized in deformation process
Mold (i.e. Deformational Environment) is maintained at 150 ± 5 DEG C of temperature by set temperature control system.In time by sample after the completion of last a time deformation
It is cooled down in the tap water of product immersion room temperature (23 ± 2) DEG C.
The Al-Zn-Mg-Cu aluminum alloy for finally obtaining high strength anti-corrosion resists under the Alloy At Room Temperature after the processing route
Tensile strength is 448.7MPa, and stress strain curve is as shown in Fig. 2.Dynamic potential polarization curve test in corrosion electric current density be-
6.891±0.034(A/cm2),Its dynamic potential polarization curve figure is as shown in Fig. 3.According to standard GB/T/T 7998-2005
The maximum corrosion depth of the aluminium alloy is 15 μm after progress intercrystalline corrosion test, and intercrystalline corrosion picture is as shown in Fig. 4, intergranular
Corrosion class is 2.
Embodiment 2
The chemical component (mass percent) of alloy are as follows: 6.10%, Mg:2.69%, Cu:1.81%, simultaneously containing Fe, Si, Cr,
The total impurities such as Mn are less than 0.5%, surplus Al.
Alloy is processed as the ㎜ × 100 of 11.4 ㎜ × 11.4 ㎜ using machining3Rod-like samples, the sample that will be processed
Product, which are placed in resistance furnace, carries out solution treatment, and treatment temperature is 470 DEG C, and the processing time is 4h.By the material after solution treatment
Material takes out from resistance furnace, and will quench in the tap water of material immersion room temperature (23 ± 2) DEG C in 10s.After quenching
Sample is put into the mold for the isometrical angular deformation for having been heated to 150 DEG C and is deformed, carried out 1 passage deformation altogether, deforming
Mold (i.e. Deformational Environment) is maintained to using a set of temperature control system 150 ± 5 DEG C of temperature in the process.In time will after the completion of deformation
It is cooled down in the tap water of sample immersion room temperature (23 ± 2) DEG C.
The Al-Zn-Mg-Cu aluminum alloy for finally obtaining high strength anti-corrosion resists under the Alloy At Room Temperature after the processing route
Tensile strength is 537.4MPa, and stress strain curve is as shown in Fig. 2.Dynamic potential polarization curve test in corrosion electric current density be-
6.369±0.035(A/cm2), dynamic potential polarization curve figure is as shown in Fig. 3.According to standard GB/T/T 7998-2005
The maximum corrosion depth of the aluminium alloy is 110 μm after progress intercrystalline corrosion test, and intercrystalline corrosion picture is as shown in Fig. 5, brilliant
Between corrosion class be 4.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.It is all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should all be included in the protection scope of the present invention.This
The technical scope of item invention is not limited to the contents of the specification, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (9)
1. a kind of preparation method of aluminium alloy, it is characterised in that: the aluminium alloy is Al-Zn-Mg-Cu aluminium alloy, wherein each member
The mass percentage of element is as follows: Zn:6.10% ~ 6.67%, Mg:2.69% ~ 2.93%, Cu:1.81% ~ 1.88%, Cr:0.22% ~
0.23%, Fe:0.15% ~ 0.16%, surplus are the proportion of Al；
The preparation method comprises the following steps:
(1) aluminum alloy blank machining is become to the club-shaped material for meeting deformation size；
(2) club-shaped material processed is placed in resistance furnace and carries out solution treatment；
(3) material is taken out after solution treatment from resistance furnace, and the material is immersed in tap water and is quenched；
(4) material is put into the mold of isometrical angular deformation and is deformed after quenching；It simultaneously can be by adding in deformation process
Mold heat, so that deformation can carry out at different temperatures；
(5) it after deforming, immerses the material into tap water and cools down, ageing treatment then is carried out to the material.
2. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that: rodlike material in the step (1)
The size of material is the ㎜ × 100 of 11.4 ㎜ × 11.4 ㎜3。
3. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that: the solid solution in the step (2)
Treatment temperature is 470 DEG C, and the solution treatment time is 4h.
4. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that: in the step (3) material from
The interval time for carrying out quenching process is fetched into resistance furnace as within 10s, the temperature of tap water used in quenching is room temperature
(23±2)℃。
5. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that: the passage deformed in step (4)
For 1 ~ 8 passage.
6. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that: when the road of deformation in step (4)
It is secondary to select deformation path for Bc mode when being 2 passages or more, it is clockwise per sample opposing mold export direction between deformation twice
It is rotated by 90 °.
7. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that: the temperature deformed in step (4)
It is room temperature (23 ± 2) DEG C between 400 DEG C.
8. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that: cooling is used in step (5)
Tap water temperature be room temperature (23 ± 2) DEG C.
9. a kind of preparation method of aluminium alloy according to claim 1, it is characterised in that: the ageing treatment in step (5)
Mode includes natrual ageing or artificial aging processing.
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| CN201810955611.XA CN108998709A (en) | 2018-08-21 | 2018-08-21 | A kind of preparation method of aluminium alloy |
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| CN201810955611.XA CN108998709A (en) | 2018-08-21 | 2018-08-21 | A kind of preparation method of aluminium alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411072A (en) * | 2021-12-28 | 2022-04-29 | 中南大学 | Aluminum alloy material with gradient structure and preparation method thereof |
| CN115383133A (en) * | 2022-08-31 | 2022-11-25 | 厦门理工学院 | 3D printing aluminum alloy and modification method thereof |
| CN115505805A (en) * | 2022-10-13 | 2022-12-23 | 吉林大学 | High-strength deformation Al-Zn-Mg-Cu alloy and preparation method thereof |
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| KR20090118404A (en) * | 2008-05-13 | 2009-11-18 | 포항공과대학교 산학협력단 | Manufacturing method of aluminum alloy having good dynamic deformation properties |
| CN105331858A (en) * | 2015-11-20 | 2016-02-17 | 江苏大学 | Preparation method for high-strength and high-toughness ultra-fine grain aluminium alloy |
| CN107164669A (en) * | 2017-05-02 | 2017-09-15 | 江苏晶王新材料科技有限公司 | It is wrought aluminium alloy and preparation method thereof that a kind of easy processing, which reclaims 7, |
| WO2018102324A1 (en) * | 2016-12-02 | 2018-06-07 | Honeywell International Inc. | Ecae materials for high strength aluminum alloys |
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2018
- 2018-08-21 CN CN201810955611.XA patent/CN108998709A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20090118404A (en) * | 2008-05-13 | 2009-11-18 | 포항공과대학교 산학협력단 | Manufacturing method of aluminum alloy having good dynamic deformation properties |
| CN105331858A (en) * | 2015-11-20 | 2016-02-17 | 江苏大学 | Preparation method for high-strength and high-toughness ultra-fine grain aluminium alloy |
| WO2018102324A1 (en) * | 2016-12-02 | 2018-06-07 | Honeywell International Inc. | Ecae materials for high strength aluminum alloys |
| WO2018102328A1 (en) * | 2016-12-02 | 2018-06-07 | Honeywell International Inc. | Ecae materials for high strength aluminum alloys |
| CN107164669A (en) * | 2017-05-02 | 2017-09-15 | 江苏晶王新材料科技有限公司 | It is wrought aluminium alloy and preparation method thereof that a kind of easy processing, which reclaims 7, |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411072A (en) * | 2021-12-28 | 2022-04-29 | 中南大学 | Aluminum alloy material with gradient structure and preparation method thereof |
| CN115383133A (en) * | 2022-08-31 | 2022-11-25 | 厦门理工学院 | 3D printing aluminum alloy and modification method thereof |
| CN115505805A (en) * | 2022-10-13 | 2022-12-23 | 吉林大学 | High-strength deformation Al-Zn-Mg-Cu alloy and preparation method thereof |
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| CB03 | Change of inventor or designer information |
Inventor after: Liu Ying Inventor after: Yang Qing Inventor after: Wang Shun Inventor after: Wang Jingtao Inventor before: Liu Ying Inventor before: Wang Jingtao Inventor before: Yang Qing Inventor before: Wang Shun |
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