CN106893908A - A kind of aluminium alloy and preparation method thereof - Google Patents
A kind of aluminium alloy and preparation method thereof Download PDFInfo
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- CN106893908A CN106893908A CN201610689287.2A CN201610689287A CN106893908A CN 106893908 A CN106893908 A CN 106893908A CN 201610689287 A CN201610689287 A CN 201610689287A CN 106893908 A CN106893908 A CN 106893908A
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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
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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
- C22F1/04—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 provides a kind of aluminium alloy and preparation method thereof, with weight, the aluminium alloy contains 5 8% Zn, 1.2 3.2% Mg, 0.001 0.15% Ga, 0.001 0.1% V, 0.001 0.2% Ti, less than 0.2% Si, less than 0.2% Fe, less than 0.2% Cu, balance of Al and with other inevitable impurity elements.Aluminium alloy of the invention keeps yield strength high, up to more than 440MPa, meanwhile, all alloys keep good anodic oxidation performance, and oxide-film is silvery white in color, uniform color, vivid.
Description
Technical field
The invention belongs to field of aluminum alloys, more particularly it relates to a kind of aluminium alloy and preparation method thereof.
Background technology
Aluminium alloy be added based on aluminium other elements constitute alloy, it has, and proportion is small, intensity is high, it is corrosion-resistant,
Electrical and thermal conductivity is good, environmentally friendly, recoverable the advantages of, as one of most commonly used material of daily use.Early in the twentieth century,
German has invented duralumin, hard alumin ium alloy（Al-Cu-Mg alloy）So that the intensity of aluminium improves twice, so as to start to be widely used in
Aircraft manufacturing and other munitions industries.Hereafter Al-Mn, Al-Mg, Al-Mg-Si, Al-Cu-Mg, Al-Zn-Mg and are developed successively
Etc. heterogeneity and the aluminium alloy of condition of heat treatment, the purposes of aluminium alloy has been expanded significantly, enabled aluminum alloy in building, automobile, iron
The application of the industrial departments such as road, ship and aircraft manufacturing is developed rapidly.
Highly developed with Current communications industry, high-strength aluminum alloy is increasing in this field application demand, big chi
Very little, ultra-thin is current electronic product main flow.Large scale, ultra-thin part have requirement very high, current market to intensity of aluminum alloy
On have the large scale electronic product of 6000 line aluminium alloy materials, but suffer that customer complaint is easily bent deformation, insufficient strength.
Add in the aluminium alloy Zn and Mg 7000 series alloys show aluminium alloy in maximum intensity, have been widely used
In the heavy duty industrial such as automobile, railway, ship and aircraft manufacturing department.Requirement with people to electronic product, people start to grind
Study carefully application of 7000 series alloys in electronics field.Simultaneously, it is also desirable to which 7000 series alloys can be by anodic oxygen
After change treatment, surface can obtain the silvery white with metallic luster, so as to the diversity for bringing feeling of high class and subsequently paint, but by
In composition reason, the obvious yellow partially of anode oxide film color of 7000 series alloys directly affects outward appearance and follow-up colouring is imitated
Really.
The content of the invention
It is contemplated that the defect existed in terms of anodic oxidation for above-mentioned high-strength aluminum alloy, there is provided one kind is adapted to sun
The high-strength aluminum alloy of pole oxidation, not only with mechanical strength higher, and anodic oxidation is functional, is in after anodic oxidation
Silvery white, bright, uniform, uniformity is good.
The present invention provides a kind of aluminium alloy, and with weight, the aluminium alloy contains the Zn of 5-8%, 1.2-3.2%
Mg, the Ga of 0.001-0.15%, the V of 0.001-0.1%, the Ti of 0.001-0.2%, less than 0.2% Si, less than 0.2%
Fe, less than 0.2% Cu, balance of Al and with other inevitable impurity elements.
Present invention also offers a kind of preparation method of aluminium alloy, the method includes that prepared by aluminium alloy stock melting into aluminium closes
Golden ingot casting, the component and weight content of the aluminium alloy cast ingot that the composition of the aluminium alloy stock is obtained are：Zn 5-8%,
Mg 1.2-3.2%,
Ga 0.001-0.15%,
V 0.001-0.1%,
Ti 0.001-0.2%,
Below Si 0.2%,
Below Fe 0.2%,
Below Cu 0.2%,
Balance of Al and with other inevitable impurity elements.
The intensity of aluminum alloy that the present invention is provided is high, and yield limit reaches more than 440MPa, and its anodic oxidation is functional,
8-18 μm is reached through sulfuric acid bath anodic oxidation rear oxidation film thickness, and the film transparency is high, is silvery white in color, it is bright, uniform,
Uniformity is good.Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention, is not intended to limit the present invention.
The present invention provides a kind of aluminium alloy, and with weight, the aluminium alloy contains the Zn of 5-8%, 1.2-3.2%
Mg, the Ga of 0.001-0.15%, the V of 0.001-0.1%, the Ti of 0.001-0.2%, less than 0.2% Si, less than 0.2%
Fe, less than 0.2% Cu, balance of Al and with other inevitable impurity elements.
In order to strengthen alloy mechanical property and anodized surface effect, further it is preferably：With weight percentage
Meter, the aluminium alloy, the Zn containing 6.3-6.9%, the Mg of 1.6-2.2%, the Ga of 0.008-0.1%, 0.005-0.1%'s
The Ti of V0.01-0.1%, less than 0.1% Si, less than 0.1% Fe, less than 0.1% Cu, balance of Al and can not with other
The impurity element for avoiding.
Present system have studied influence of the various alloy elements to anodic oxidation color, such as Mn, Cu, Fe, Si,
Although Cr, Zr etc., these elements serve crystal grain thinning, solution strengthening effect, if but content control improper can have a strong impact on
The surface effect of anodic oxidation.As Mn elements excessively cause the general brown of alloy anode oxidation color（Pink colour）；Cu, Cr element can
Yellowish after causing alloy anode to aoxidize, especially Cr is extremely sensitive to Color influences, and 0.2wt.% contents can cause oxidation
Film substantially changes colour；Excessive Fe, Si, Zr loses originally vivid silvery white after making alloy oxidation, and shows dark gray, sternly
Black during weight.
What the aluminium alloy that the present invention is provided belonged to Zn-Mg reinforcings 7000 is wrought aluminium alloy category, and the addition of Zn and Mg is simultaneously
The glossiness of alloy anodized film will not be acutely reduced, will not more cause alloy oxide film to change colour, alloy is mainly MgZn2Phase
And Al2Mg3Zn3Phase precipitation strength.
Ga elements addition alloy can activate aluminium surface, improve the uniformity of alumilite process efficiency and oxide-film generation,
The dynamic process that aluminium alloy anode oxide is an oxide-film to be dissolved to aluminum substrate diffusion generation with skin covering of the surface, Ga elements energy and its
He forms eutectic mixture by element, is attached to oxide-film barrier layer, destroys surface passivated membrane, and the reaction for improving alumina is lived
Property, so as to promote the generation of oxide-film uniform to aluminum substrate propulsion；In addition, Ga elements are finally dissolved in electrolytic solution, will not
Any adverse effect is produced to oxide-film.
V and Ti is added in alloy, can generate Al11V and Al3Ti insoluble compounds, are respectively provided with good crystal grain thinning and carry
The effect of recrystallization temperature high, improves alloy combination property；Also, V and Ti do not interfere with alloy anodized film outward appearance matter
Amount.
Si, Fe and Cu content served good reinforced alloys below 0.2%, both, improved the effect of mechanical property,
Anodic oxidation effect is not interfered with again.
In the present invention, with weight, in described other inevitable impurity elements, the content of Cr is less than
Content of the content of 0.02%, Zr less than 0.1%, Mn is less than 0.1%, and remaining single content is less than 0.05%, and total content is less than
0.15%。
Intensity of aluminum alloy of the invention is high, and yield limit reaches more than 440MPa, and its anodic oxidation is functional, through sulphur
Acid bath anodic oxidation rear oxidation film thickness reaches 8-18 μm, and the film transparency is high, is silvery white in color, bright, uniform, unanimously
Property is good.
Present invention also offers a kind of preparation method of aluminium alloy, the method includes that prepared by aluminium alloy stock melting into aluminium closes
Golden ingot casting, the component and weight content of the aluminium alloy cast ingot that the composition of the aluminium alloy stock is obtained are：Zn 5-8%,
Mg 1.2-3.2%,
Ga 0.001-0.15%,
V 0.001-0.1%,
Ti 0.001-0.2%,
Below Si 0.2%,
Below Fe 0.2%,
Below Cu 0.2%,
Balance of Al and with other inevitable impurity elements.
In method of the present invention, further include to carry out the aluminium alloy cast ingot to be shaped to Al-alloy parts.
In the present invention, the method for the shaping has no particular limits, and can be that various alloys commonly used in the art are molded
Method, further preferably the method for the shaping is roll forming or extrusion molding in the present invention.In the present invention, it is described to roll
The condition for being made type is：Rolling processing is carried out at 475-530 DEG C, rolled plate is obtained.The condition of the extrusion forming is：485-
540 DEG C carry out extrusion processing, obtain extrusion profile.
In the present invention, before shaping, also including carrying out Homogenization Treatments to aluminium alloy cast ingot；Homogenization Treatments can disappear
Except casting flaws such as composition, microstructure segregations, make alloying component homogenieity more preferable.The method of the Homogenization Treatments is：Aluminium is closed
Golden ingot casting is incubated 2-4 hours at 410-430 DEG C, is heated to 460-480 DEG C and is incubated 12-16 hours.
In the present invention, also include carrying out solution treatment to Al-alloy parts after formation；The effect of solution treatment can make
The abundant solid solution of alloying element, forms supersaturated solid solution, is precipitation（Separate out）Tissue preparation is carried out in reinforcing.The solution treatment
Temperature is 465-485 DEG C, and the time is 0.5-1.5h.
In the present invention, artificial aging treatment is carried out to Al-alloy parts after the solution treatment；Artificial aging treatment can
So that supersaturated solid solution decomposes precipitation strength phase, Dispersed precipitate is in alloy structure, reinforced alloys.Science and engineering at the artificial aging
Skill is：4-6 hours is incubated at 95-105 DEG C, then, 120-130 DEG C is heated to and is incubated 12-20 hours.Or artificial aging treatment
Technique is：16-28 hours is incubated at 110-130 DEG C.
Heretofore described aluminium alloy stock can be various pure comprising Al, Zn, Mg, Ga, V, Ti, Si, Fe and Cu
Ingot or alloy pig, have no particular limits, as long as content range of the invention can be obtained.From being readily obtained and low
Cost angle considers, present invention preferably employs pure Al ingots, Al-V alloys, Al-Fe alloys, Al-Ti alloys, Al-Si alloys, Al-
Cu alloys, pure Mg, pure Zn and pure Ga.
In the present invention, the method that the melting prepares aluminium alloy cast ingot has no particular limits, and can be commonly used in the art
Various methods, as long as after can ingot casting be melted formed aluminium alloy cast ingot, such as：
After through burdening calculation, pure Al ingots, Al-V are weighed according to quantity（10%V）Alloy, Al-Ti（5%Ti）Alloy, Al-Si（20%Si）Close
Gold, Al-Fe（20%Fe）Alloy, Al-Cu（50%Cu）Alloy, pure Mg, pure Zn and pure Ga, then by pure Al ingots, Al-V alloys, Al-
Ti alloys, Al-Si alloys, Al-Fe alloys, made of Al-Cu alloy are put into smelting furnace and are heated to whole fusings, then sequentially add pure
Zn, pure Mg, pure Ga（Packed tightly with aluminium foil）Submerge after melting in melt, stir 8-15 minutes, make composition uniform.Removed adding 0.5%
Slag agent remove the gred, 0.5% refining agent refining degasification, after the completion of skim standing 20-35 minutes, be then cooled to 710 DEG C or so and start to pour
Cast ingot；Again by ingot casting by mechanical property can be obtained through heat treatment reinforcement after extrusion or roll forming and anodic oxidation performance is excellent
Different sheet material and section bar.
The present invention is described in further detail below by specific embodiment.
Embodiment 1
After through burdening calculation, each intermediate alloy and metal simple-substance are weighed by weight, then according to the aluminium alloy smelting of above-mentioned offer
Sample making course carries out melting and aluminium alloy cast ingot, each intermediate alloy and metal simple-substance part by weight such as table 1 below is obtained.Then, by aluminium
Alloy cast ingot is incubated 3.5 hours at 415 DEG C, and insulation carries out homogenize process in 14 hours at a temperature of being heated to 470 DEG C；Then,
Aluminium alloy cast ingot temperature is set into 435 DEG C carries out rolling processing, obtains rolled aluminium alloy part, by Al-alloy parts carry out 475 DEG C/
1h solution treatment, using 25-30 DEG C of water-cooled, is then stretched, and deflection is 1%, finally, carries out artificial aging treatment：
100 DEG C are heated 5 hours, are heated to 125 DEG C and are incubated 18 hours, prepare Al-alloy parts A1.
Embodiment 2
After through burdening calculation, each intermediate alloy and metal simple-substance are weighed by weight, then according to the aluminium alloy smelting of above-mentioned offer
Sample making course carries out melting and aluminium alloy cast ingot, each intermediate alloy and metal simple-substance part by weight such as table 1 below is obtained.Then, by aluminium
Alloy cast ingot is incubated 4 hours at 425 DEG C, and insulation carries out homogenize process in 15 hours at a temperature of being heated to 475 DEG C；Then, will
Aluminium alloy cast ingot temperature is set to 445 DEG C and carries out rolling processing, obtains rolled aluminium alloy part, by Al-alloy parts carry out 485 DEG C/
1.5h solution treatment, using 25-30 DEG C of water-cooled, is then stretched, and deflection is 1.5%, finally, carries out artificial aging treatment：
Heated 6 hours at 105 DEG C, be heated to 130 DEG C and be incubated 20 hours, prepare Al-alloy parts A2.
Embodiment 3
After through burdening calculation, each intermediate alloy and metal simple-substance are weighed by weight, then according to the aluminium alloy smelting of above-mentioned offer
Sample making course carries out melting and aluminium alloy cast ingot, each intermediate alloy and metal simple-substance part by weight such as table 1 below is obtained.Then, by aluminium
Alloy cast ingot is incubated 4 hours at 410 DEG C, and insulation carries out homogenize process in 12 hours at a temperature of being heated to 460 DEG C；Then, will
Aluminium alloy cast ingot temperature is set to 450 DEG C and carries out rolling processing, obtains rolled aluminium alloy part, and Al-alloy parts are carried out into 465 DEG C/1h
Solution treatment, using 25-30 DEG C of water-cooled, is then stretched, and deflection is 1.5%, finally, carries out artificial aging treatment：Heating
24 hours are incubated to 120 DEG C, Al-alloy parts A3 is prepared.
Embodiment 4
Method according to embodiment 1 prepares Al-alloy parts A4, difference be the part by weight of each intermediate alloy and metal simple-substance such as
Table 1 below.
Embodiment 5
After through burdening calculation, each intermediate alloy and metal simple-substance are weighed by weight, then according to the aluminium alloy smelting of above-mentioned offer
Sample making course carries out melting and aluminium alloy cast ingot, each intermediate alloy and metal simple-substance part by weight such as table 1 below is obtained.Then, by aluminium
Alloy cast ingot is incubated 4 hours at 425 DEG C, and insulation carries out homogenize process in 15 hours at a temperature of being heated to 475 DEG C；Then, will
Aluminium alloy cast ingot temperature is set to 450 DEG C and carries out extrusion processing, obtain extrude Al-alloy parts, by Al-alloy parts carry out 485 DEG C/
1.5h solution treatment, using 25-30 DEG C of water-cooled, is then stretched, and deflection is 1%, finally, carries out artificial aging treatment：
105 DEG C are heated 6 hours, are heated to 130 DEG C and are incubated 20 hours, prepare Al-alloy parts A5.
Embodiment 6
Method according to embodiment 5 prepares Al-alloy parts A6, difference be the part by weight of each intermediate alloy and metal simple-substance such as
Table 1 below.
Embodiment 7
Method according to embodiment 5 prepares Al-alloy parts A7, difference be the part by weight of each intermediate alloy and metal simple-substance such as
Table 1 below.
Embodiment 8
Method according to embodiment 5 prepares Al-alloy parts A8, difference be the part by weight of each intermediate alloy and metal simple-substance such as
Table 1 below.
Embodiment 9
Method according to embodiment 5 prepares Al-alloy parts A9, difference be the part by weight of each intermediate alloy and metal simple-substance such as
Table 1 below.
Embodiment 10
Method according to embodiment 5 prepares Al-alloy parts A10, difference be the part by weight of each intermediate alloy and metal simple-substance such as
Table 1 below.
Comparative example 1
Method according to embodiment 1 prepares Al-alloy parts B1, difference be the part by weight of each intermediate alloy and metal simple-substance such as
Table 1 below.
Comparative example 2
Method according to embodiment 5 prepares Al-alloy parts B2, difference be the part by weight of each intermediate alloy and metal simple-substance such as
Table 1 below.
Table 1
。
Table 2
。
Performance test
First, al alloy component can be tested
By Al-alloy parts A1-A10 and B1-B2 ICP spectrometers（The Thermo ICAP 6300 of U.S.'s thermoelectricity）Test its composition
And content, the results are shown in Table 2.
2nd, Mechanical Properties of Aluminum Alloys test
Al-alloy parts A1-A8 and B1-B2 are tested as follows：
According to the stretching test method measurement tensile strength of aluminium alloy, yield strength in GB/T228-2002 metal materials room and prolong
Rate is stretched, 3 are the results are shown in Table.
3rd, the performance test of anodic oxidation
The condition of anodic oxidation：Al-alloy parts A1-A10 and B1-B2 are carried out into following anodic oxidation respectively, anodic oxidation is obtained
Products C A1-CA10 and CB1-CB2.
Using sulfuric acid DC anodizing technique：19 DEG C of tank liquor temperature of oxidation, current density 1.6A dm-2, oxidization time
30min。
1st, the effect of anode oxide film
CA1-CA10 and CB1-CB2 are placed under natural light, the anode oxide film on its surface is visually observed, 4 are the results are shown in Table.
2nd, the thickness of anodic oxidation
The thickness of the anode oxide film on CA1-CA10 and CB1-CB2 surfaces is tested with TIME2818 cladding thickness measurers, be the results are shown in Table
4。
Table 3
。
Table 4
。
Embodiment 1-10 is can be seen that from the performance test data of table 3- tables 4, the surrender that Al-alloy parts keep high is strong
Degree, up to more than 440MPa, and increases with the increase of main intensified element Mg, Zn content, meanwhile, all alloys keep good
Good anodic oxidation performance, oxide-film is silvery white in color, uniform color, vivid.
In comparative example 1, alloy contains more Fe and Si, although its mechanical performance is not poor, but has been not suitable for bright sun
Pole oxidation processes, overall color and luster is dark after anodic oxidation, inclined grey, and locally has greyness, simultaneous oxidation film formation efficiency
Reduce, only 6 μm of thickness；In comparative example 2, alloy contains more Cu, Cr, Mn, its satisfactory mechanical property, but anodic oxidation performance
Decline substantially, after anodic oxidation, whole exemplar color and luster is dark, and yellow partially, it has been not suitable for bright anodizing treatment.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (11)
1. a kind of aluminium alloy, it is characterised in that with weight, the aluminium alloy contains the Zn of 5-8%, 1.2-3.2%
Mg, the Ga of 0.001-0.15%, the V of 0.001-0.1%, the Ti of 0.001-0.2%, less than 0.2% Si, less than 0.2%
Fe, less than 0.2% Cu, balance of Al and with other inevitable impurity elements.
2. aluminium alloy according to claim 1, it is characterised in that with weight, the aluminium alloy contains
The Ti of the V of the Ga of the Mg of the Zn of 6.3-6.9%, 1.6-2.2%, 0.008-0.1%, 0.005-0.1%, 0.01-0.1%,
Less than 0.1% Si, less than 0.1% Fe, less than 0.1% Cu, balance of Al and with other inevitable impurity elements.
3. aluminium alloy according to claim 1, it is characterised in that with weight, described other are inevitable
Impurity element in, the content of Cr content of the content less than 0.02%, Zr less than 0.1%, Mn is less than 0.1%, remaining single content
Less than 0.05%, content is added up to be less than 0.15%.
4. aluminium alloy according to claim 1, it is characterised in that the yield limit of the aluminium alloy is more than 440MPa.
5. a kind of preparation method of aluminium alloy, it is characterised in that：The method includes for aluminium alloy stock melting preparing aluminium alloy casting
Ingot, the component and weight content of the aluminium alloy cast ingot that the composition of the aluminium alloy stock is obtained are：Zn 5-8%,
Mg 1.2-3.2%,
Ga 0.001-0.15%,
V 0.001-0.1%,
Ti 0.001-0.2%,
Below Si 0.2%,
Below Fe 0.2%,
Below Cu 0.2%,
Balance of Al and with other inevitable impurity elements.
6. preparation method according to claim 5, it is characterised in that the method also includes entering described aluminium alloy cast ingot
Row is shaped to Al-alloy parts, and the method for the shaping is roll forming or extrusion molding.
7. preparation method according to claim 6, it is characterised in that before shaping, also including entering to aluminium alloy cast ingot
Row homogenize process；The method of the homogenize process is：Aluminium alloy cast ingot is incubated 2-4 hours at 410-430 DEG C, is reheated
12-16 hours is incubated to 460-480 DEG C.
8. preparation method according to claim 6, it is characterised in that also include consolidating Al-alloy parts after formation
Molten treatment；The temperature of the solution treatment is 465-485 DEG C, and the time is 0.5-1.5h.
9. preparation method according to claim 8, it is characterised in that also include to aluminium alloy after the solution treatment
Part carries out artificial aging treatment.
10. preparation method according to claim 9, it is characterised in that the method for the artificial aging treatment is：In 95-
105 DEG C are incubated 4-6 hours, then, are heated to 120-130 DEG C and are incubated 12-20 hours.
11. preparation methods according to claim 9, it is characterised in that the method for artificial aging treatment is：In 110-
130 DEG C are incubated 16-28 hours.
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- 2016-08-18 CN CN201610689287.2A patent/CN106893908A/en active Pending
- 2016-08-18 WO PCT/CN2016/095892 patent/WO2017107511A1/en active Application Filing
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619976A (en) * | 2017-08-09 | 2018-01-23 | 中车青岛四方机车车辆股份有限公司 | A kind of Al Zn Mg alloys and preparation method thereof |
| CN107447143A (en) * | 2017-08-10 | 2017-12-08 | 佛山市三水凤铝铝业有限公司 | A kind of hollow extruded aluminum alloy profile and its pressing method |
| CN107964615A (en) * | 2017-11-22 | 2018-04-27 | 华南理工大学 | A kind of extrudate high-strength 7xxx line aluminium alloys and preparation method thereof |
| CN110396628A (en) * | 2018-04-25 | 2019-11-01 | 比亚迪股份有限公司 | A kind of aluminium alloy and preparation method thereof |
| CN110396628B (en) * | 2018-04-25 | 2022-02-08 | 比亚迪股份有限公司 | Aluminum alloy and preparation method thereof |
| CN112143949A (en) * | 2019-06-27 | 2020-12-29 | 比亚迪股份有限公司 | Die-casting aluminum alloy and preparation method and application thereof |
| CN112143949B (en) * | 2019-06-27 | 2021-12-07 | 比亚迪股份有限公司 | Die-casting aluminum alloy and preparation method and application thereof |
| CN113150653A (en) * | 2021-06-22 | 2021-07-23 | 南通市通州区同博机械制造有限公司 | High-strength corrosion-resistant aluminum alloy and processing technology thereof |
| CN116445778A (en) * | 2021-12-17 | 2023-07-18 | 苹果公司 | Aluminum alloy with high strength and attractive appearance |
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| Publication number | Publication date |
|---|---|
| WO2017107511A1 (en) | 2017-06-29 |
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