CN107354351A - A kind of appearance member aluminium alloy and its processing method - Google Patents
A kind of appearance member aluminium alloy and its processing method Download PDFInfo
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- CN107354351A CN107354351A CN201710610396.5A CN201710610396A CN107354351A CN 107354351 A CN107354351 A CN 107354351A CN 201710610396 A CN201710610396 A CN 201710610396A CN 107354351 A CN107354351 A CN 107354351A
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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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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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
- C22F1/047—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 magnesium as the next major constituent
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Abstract
The invention discloses a kind of 3C Product appearance member aluminium alloy and its processing method, wherein the appearance member aluminium alloy meter, by being prepared including following component：Mg：1.5 ~ 3.0 wt%, Si：0.05 ~ 0.6 wt%, Cu：0.05 ~ 0.6 wt%, Mn：≤ 0.10 wt%, Cr：≤ 0.10 wt%, Ti：≤ 0.05 wt%, Fe：≤ 0.15 wt%, remaining component are Al and inevitable impurity.Appearance member aluminium alloy according to embodiments of the present invention, by increasing intensified element Si, Cu content and optimizing its content, the other micro- contents of adjustment and control to each processing step in processing method, material is set to obtain preferable intensity and anodic oxidation effect.
Description
Technical field
The present invention relates to metal and metal working technical area, and in particular to a kind of appearance member aluminium alloy and its processing side
Method.
Background technology
For the aluminium alloy of 3C Product appearance member, such as 5xxx line aluminium alloys（5 line aluminium alloys）, its intensity is by cold working process
In dislocation strengthening obtain, be a kind of not heat-treatable strengthened alloy, 5 line aluminium alloys can not be as 6xxx systems aluminium age-hardenable
Alloy, is dissolved and timeliness intensive treatment to final thickness sheet material.The strength character and anodic oxygen of existing 5xxx line aluminium alloys
Change effect to need further to improve, to meet the 3C Product appearance member stricter to appearance requirement.
The content of the invention
In view of this, the present invention provides a kind of appearance member aluminium alloy.
The present invention also provides a kind of processing method for preparing above-mentioned appearance member aluminium alloy.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of appearance member aluminium alloy, by weight percentage, by being prepared including following component：
Mg：1.5 ~ 3.0 wt%,
Si：0.05 ~ 0.6 wt%,
Cu：0.05 ~ 0.6 wt%,
Mn：≤ 0.10 wt%,
Cr：≤ 0.10 wt%,
Ti：≤ 0.05 wt%,
Fe：≤ 0.15 wt%,
Remaining component is Al and inevitable impurity.
Preferably, inevitable impurity content is no more than 0.15 wt.%, it is further preferred that inevitable impurity
Content is no more than 0.005 wt.%, and most preferably, the content of inevitable impurity is 0 wt. %.It is heretofore described can not
The impurity avoided refers to the impurity as caused by production.
Further, count in mass ratio, Si:Cu=0.8~1.2.
Further, Fe content is up to 0.10 wt%.
Further, Fe content is up to 0.05 wt%.
Further, Mn content is up to 0.02 wt%.
Further, Cr content is up to 0.02 wt%.
Present invention additionally comprises the processing method of appearance member aluminium alloy, comprise the following steps：
S1, using the aluminium alloy with above-mentioned appearance member aluminium alloy identical component as casting, and homogenizing annealing is carried out to casting, its
Middle temperature is raised to 430 ~ 445 DEG C from room temperature, is incubated for the first time, is then raised again to 540 ~ 570 DEG C, second of insulation；
S2, then hot rolling is carried out, wherein start rolling temperature is 530 ~ 550 DEG C, and hot finishing temperature is not higher than 280 DEG C, obtains cold rolling blank；
S3, required thickness is subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness.
Further, it is further comprising the steps of after step S3：
S4-1, the flitch of final thickness is made annealing treatment again, wherein annealing temperature is 250 ~ 360 DEG C, time 4-8h.
Further, it is further comprising the steps of after step S3：
S4-2, the flitch of final thickness is heat-treated, the heat treatment is included at the solution treatment carried out successively and timeliness
Reason, 540 ~ 550 DEG C of the temperature of the solution treatment, time are 10 ~ 20min, and the temperature of the Ageing Treatment is 150 ~ 200 DEG C,
Time is 4-16h.
Further, the first time soaking time is 3 ~ 8h, and second of soaking time is 5 ~ 20h.
The beneficial effect that the present invention is reached：
Appearance member aluminium alloy according to embodiments of the present invention, by increase intensified element Si, Cu content and optimize its content,
Adjust other micro- contents, material is obtained preferable intensity and anodic oxidation effect, and by further combined with
Control to correlation step in processing method and technological parameter, the combination property of material is further increased, make final gained outer
The 3C Product appearance member stricter to appearance requirement can be applied to by seeing part aluminium alloy.
Embodiment
With reference to specific embodiment, the invention will be further described.Following examples are only used for clearly illustrating
Technical scheme, and can not be limited the scope of the invention with this.
It is 5 line aluminium alloys in the appearance member aluminium alloy of the embodiment of the present invention, in its component, by adding Si and Cu members
It is plain then can make material that there is aging characteristic, it can further improve the intensity of material.Si, can shape in 5 line aluminium alloy Al-Mg alloys
Into Mg2S-phase.The presoma of the phase has ageing strengthening effect.But Si contents should not be excessive, otherwise insoluble pair will be formed
Strengthen the thick Mg without contribution2Si phases, Si content is preferably in 0.05 ~ 0.6 wt%；Cu typically plays solution strengthening effect, but also may be used
Q phases or θ phases are formed with Si, Mg element interaction, plays ageing strengthening.Cu content preferably in 0.05 ~ 0.6 wt%, is crossed at least
Strengthen low effort, cross the decline at most easily causing decay resistance, and Si:Cu mass ratioes are 0.8 ~ 1.2, can be preferable
Promote the precipitation of phase；Mn, Cr, Ti are control crystallite dimension element, and its content should control in≤0.10 wt% respectively ,≤0.10
Wt% ,≤0.05 wt%, wherein Mn, Cr content are if less than 0.02 wt% then more preferably；Fe is impurity element, its content for≤
0.15 wt% is suitable, if≤0.05 wt% more preferably.
According to the processing method to appearance member aluminium alloy of the present invention, in step sl, the purpose of twin-stage temperature is carried out
For：Low temperature (temperature is raised to 430 ~ 445 DEG C from room temperature) then further heats up thick AlMg phased solns（Temperature is raised again to
540~570℃）By thick Mg2Si phased solns.And the control to soaking time is then in order to fully ensure that the dissolution degree of thick phase.
In S2, start rolling temperature is controlled, enables to roll easy progress, and supersaturation is provided for the annealing in follow-up S4-1
Matrix；Annealing in S4-1 is in order that obtaining material obtains preferable combination property.Heat can also be carried out to the flitch of final thickness
Processing, wherein solution treatment purpose is to provide supersaturated solid solution, and aging technique can improve the mechanical property of material.
In the present invention, room temperature refers to the normal room temperature under normal pressure, and ambient temperature scope is 20-40 DEG C.
Appearance member aluminium alloy and its processing method are described in conjunction with specific embodiments further below.
Embodiment 1
The appearance member aluminium alloy of the present embodiment including following components by being prepared, by weight percentage, the wt% of Mg 1.5,
Si 0.40 wt%, Cu 0.42 wt%, Mn 0.02 wt%, Cr 0.01 wt%, Ti 0.02 wt%, Fe 0.08
Wt%, surplus Al.
The processing method of above appearance member aluminium alloy includes step：
S1. identical ingot casting will be formed with above-mentioned appearance member and carries out homogenizing annealing, and be raised to 440 DEG C from room temperature, be incubated 8 hours,
Then 570 DEG C are raised again to, is incubated 5 hours；
S2. hot rolling is carried out again, and start rolling temperature is 530 DEG C, and hot finishing temperature control obtains cold rolling blank at 270 DEG C；
S3. required thickness is subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness；
S4-1. the flitch of final thickness is made annealing treatment again, wherein annealing temperature is 250 DEG C, annealing time 8h.
Embodiment 2
The appearance member aluminium alloy of the present embodiment, by weight percentage, component is as follows：Mg 2.0 wt%, Si 0.05
Wt%, Cu 0.05 wt%, Mn 0.10 wt%, Cr 0.10 wt%, Ti 0.05 wt%, the wt% of Fe 0.15, surplus are
Inevitable impurity in Al and process.
The processing method of above appearance member aluminium alloy includes step：
S1. identical ingot casting will be formed with above-mentioned appearance member and carries out homogenizing annealing, and be raised to 445 DEG C from room temperature, insulation 3 is small
When, 540 DEG C are then raised again to, is incubated 20 hours；
S2. hot rolling is carried out again, and start rolling temperature is 550 DEG C, and hot finishing temperature control obtains cold rolling blank at 260 DEG C；
S3. required thickness is subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness；
S4-1. the flitch of final thickness is made annealing treatment again, wherein annealing temperature is 360 DEG C, annealing time 4h.
Embodiment 3
The appearance member aluminium alloy of the present embodiment, by weight percentage, component is as follows：Mg 3.0 wt%, Si 0.27
Wt%, Cu 0.32 wt%, Mn 0.01 wt%, Cr 0.01 wt%, Ti 0.01 wt%, the wt% of Fe 0.05, surplus are
Al。
The processing method of above appearance member aluminium alloy includes step：
S1. identical ingot casting will be formed with above-mentioned appearance member and carries out homogenizing annealing, and be raised to 440 DEG C from room temperature, insulation 6 is small
When, 560 DEG C are then raised again to, is incubated 15 hours；
S2. hot rolling is carried out again, and start rolling temperature is 540 DEG C, and hot finishing temperature control obtains cold rolling blank at 250 DEG C；
S3. required thickness is subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness；
S4-1. the flitch of final thickness is made annealing treatment again, wherein annealing temperature is 300 DEG C, annealing time 6h.
Embodiment 4
The appearance member aluminium alloy of the present embodiment, by weight percentage, component is as follows：Mg 2.2 wt%, Si 0.30
Wt%, Cu 0.32 wt%, Mn 0.03 wt%, Cr 0.03 wt%, Ti 0.02 wt%, the wt% of Fe 0.03, surplus are
Al。
The processing method of above appearance member aluminium alloy includes step：
S1. identical ingot casting will be formed with above-mentioned appearance member and carries out homogenizing annealing, and be raised to 440 DEG C from room temperature, insulation 7 is small
When, 555 DEG C are then raised again to, is incubated 18 hours；
S2. hot rolling is carried out again, and start rolling temperature is 545 DEG C, and hot finishing temperature control obtains cold rolling blank at 270 DEG C；
S3. required thickness is subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness；
S4-2. the flitch of final thickness being heat-treated again, heat treatment includes solution treatment and the Ageing Treatment carried out successively,
Wherein the temperature of solution treatment is 545 DEG C, and the time is 10 minutes, and then the temperature of Ageing Treatment is 150 DEG C, time 16h.
Embodiment 5
The appearance member aluminium alloy of the present embodiment, by weight percentage, component is as follows：Mg 2.2 wt%, Si 0.30
Wt%, Cu 0.32 wt%, Mn 0.03 wt%, Cr 0.03 wt%, Ti 0.02 wt%, the wt% of Fe 0.03, surplus are
Al。
The processing method of above appearance member aluminium alloy includes step：
S1. identical ingot casting will be formed with above-mentioned appearance member and carries out homogenizing annealing, and be raised to 440 DEG C from room temperature, insulation 7 is small
When, 555 DEG C are then raised again to, is incubated 18 hours；
S2. hot rolling and then is again carried out, start rolling temperature is 545 DEG C, and hot finishing temperature control is at 270 DEG C；Obtain cold rolling blank；
S3. required thickness is subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness；
S4-2. the flitch for obtaining final thickness is heat-treated again, heat treatment is included at the solution treatment carried out successively and timeliness
Reason, the wherein temperature of solution treatment are 550 DEG C, and the time is 10 minutes, and the aging temperature then carried out is 200 DEG C, the time
For 4h.
Embodiment 6
The appearance member aluminium alloy of the present embodiment, by weight percentage, component is as follows：Mg 2.2 wt%, Si 0.30
Wt%, Cu 0.32 wt%, Mn 0.03 wt%, Cr 0.03 wt%, Ti 0.02 wt%, the wt% of Fe 0.03, surplus are
Al。
The processing method of above appearance member aluminium alloy includes step：
S1. identical ingot casting will be formed with above-mentioned appearance member and carries out homogenizing annealing, and be raised to 440 DEG C from room temperature, insulation 7 is small
When, 555 DEG C are then raised again to, is incubated 18 hours；
S2. hot rolling and then is again carried out, start rolling temperature is 545 DEG C, and hot finishing temperature control obtains cold rolling blank at 270 DEG C；
S3. required thickness is subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness；
S4. the flitch of final thickness being heat-treated again, heat treatment includes solution treatment and the Ageing Treatment carried out successively,
Wherein the temperature of solution treatment is 540 DEG C, and the time is 20 minutes, and the aging temperature then carried out is 170 DEG C, and the time is
8h。
Comparative example 1
The appearance member aluminium alloy of this comparative example, by weight percentage, component is as follows：Mg 3.5 wt%, Si 0.02
Wt%, Cu 0.01 wt%, Mn 0.05 wt%, Cr 0.03 wt%, Ti 0.02 wt%, the wt% of Fe 0.10, surplus are
Al。
The processing method of appearance member aluminium alloy includes step in this comparative example：It will be formed first with appearance member in this comparative example
Identical ingot casting carries out homogenizing annealing, is raised to 555 DEG C from room temperature, is incubated 18 hours；Then hot rolling is carried out again, and start rolling temperature is
545 DEG C,；Required thickness is subsequently cold-rolled to cold rolling blank, then is heat-treated, heat treatment temperature is 300 DEG C, the time
For 6h.
Comparative example 2
The appearance member aluminium alloy of this comparative example, by weight percentage, component is as follows：Mg 4.0 wt%, Si 0.06
Wt%, Cu 0.08 wt%, Mn 0.02 wt%, Cr 0.01 wt.%, Fe 0.08 wt%, the wt% of Ti 0.01, surplus are
Al。
The processing method of appearance member aluminium alloy includes step in this comparative example：It will be formed first with appearance member in this comparative example
The homogenization heat treatment of identical alloy cast ingot：7 hours are incubated at 430 DEG C, 460 DEG C is then raised to and is incubated 6 hours；Then carry out again
Hot rolling, start rolling temperature are 460 DEG C, and finishing temperature control obtains cold rolling blank below 380 DEG C；Cold rolling blank is carried out follow-up cold
Roll, obtain the flitch of final thickness；The flitch of final thickness is made annealing treatment, wherein annealing temperature is 300 DEG C, during annealing
Between be 4h.
Comparative example 3
The appearance member aluminium alloy of this comparative example, by weight percentage, component is as follows：Mg 1.0 wt%, Si 0.45
Wt%, Cu 0.43 wt%, Mn 0.10 wt%, Cr 0.20 wt%, Ti 0.02 wt%, the wt% of Fe 0.10, surplus are
Al。
The processing method of appearance member aluminium alloy includes step in this comparative example：It will be formed first with appearance member in this comparative example
Identical ingot casting carries out homogenizing annealing, is raised to 555 DEG C from room temperature, is incubated 18 hours；Then hot rolling is carried out again, and start rolling temperature is
545 DEG C, obtain cold rolling blank；Required thickness is then subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness；Then
The flitch of final thickness is heat-treated again again, heat treatment temperature is 300 DEG C, heat treatment time 6h.
Table 1 illustrates the performance of gained appearance member aluminium alloy in embodiment and comparative example.
Table 1
As shown in table 1, the present invention by the content of each element in the line aluminium alloy of Reasonable adjustment 5 and controls processing technology, is ensureing
On the basis of the strength of materials, the anodic oxidation effect of material is improved, material is obtained preferable combination property, is preferably met
The requirement of the 3C Product appearance member higher to appearance requirement such as mobile phone.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of appearance member aluminium alloy, it is characterised in that by weight percentage, by being prepared including following component：
Mg：1.5 ~ 3.0 wt%,
Si：0.05 ~ 0.6 wt%,
Cu：0.05 ~ 0.6 wt%,
Mn：≤ 0.10 wt%,
Cr：≤ 0.10 wt%,
Ti：≤ 0.05 wt%,
Fe：≤ 0.15 wt%,
Remaining component is Al and inevitable impurity.
2. appearance member aluminium alloy according to claim 1, it is characterised in that count in mass ratio, Si:Cu=0.8~1.2.
3. appearance member aluminium alloy according to claim 1, it is characterised in that Fe content is up to 0.10 wt%.
4. appearance member aluminium alloy according to claim 1, it is characterised in that Fe content is up to 0.05 wt%.
5. appearance member aluminium alloy according to claim 1, it is characterised in that Mn content is up to 0.02 wt%.
6. appearance member aluminium alloy according to claim 1, it is characterised in that Cr content is up to 0.02 wt%.
7. a kind of processing method of appearance member aluminium alloy, it is characterised in that comprise the following steps：
S1, using the aluminium alloy described in constituent is claim any one of 1-6 as casting, and homogenization is carried out to casting and moved back
Fire, wherein temperature are raised to 430 ~ 445 DEG C from room temperature, are incubated for the first time, are then raised again to 540 ~ 570 DEG C, second of insulation；
S2, then hot rolling is carried out, wherein start rolling temperature is 530 ~ 550 DEG C, and hot finishing temperature is not higher than 280 DEG C, obtains cold rolling blank；
S3, required thickness is subsequently cold-rolled to cold rolling blank, obtains the flitch of final thickness.
8. the processing method of a kind of appearance member aluminium alloy according to claim 7, it is characterised in that also wrapped after step S3
Include following steps：
S4-1, the flitch of final thickness is made annealing treatment again, wherein annealing temperature is 250 ~ 360 DEG C, time 4-8h.
9. the processing method of a kind of appearance member aluminium alloy according to claim 7, it is characterised in that also wrapped after step S3
Include following steps：
S4-2, the flitch of final thickness is heat-treated, the heat treatment is included at the solution treatment carried out successively and timeliness
Reason, 540 ~ 550 DEG C of the temperature of the solution treatment, time are 10 ~ 20min, and the temperature of the Ageing Treatment is 150 ~ 200 DEG C,
Time is 4-16h.
A kind of 10. processing method of appearance member aluminium alloy according to claim 7, it is characterised in that the first time
Soaking time is 3 ~ 8h, and second of soaking time is 5 ~ 20h.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841664A (en) * | 2017-10-19 | 2018-03-27 | 东莞市宏锦金属制品有限公司 | 3C Product appearance member 5xxx line aluminium alloys and its processing method |
| CN108193102A (en) * | 2018-01-12 | 2018-06-22 | 广东和胜工业铝材股份有限公司 | Al-Mg alloys and preparation method thereof |
| CN110373585A (en) * | 2019-08-28 | 2019-10-25 | 广东鸿邦金属铝业有限公司 | A kind of aluminium alloy and preparation method thereof improving conductivity by heat treatment |
| CN111763858A (en) * | 2019-04-02 | 2020-10-13 | Oppo广东移动通信有限公司 | Aluminum alloy material, preparation method, shell and electronic equipment |
| CN113637926A (en) * | 2021-08-13 | 2021-11-12 | 联想(北京)有限公司 | Rolling annealing process of 5-series aluminum alloy |
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| CN107841664A (en) * | 2017-10-19 | 2018-03-27 | 东莞市宏锦金属制品有限公司 | 3C Product appearance member 5xxx line aluminium alloys and its processing method |
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| CN113637926A (en) * | 2021-08-13 | 2021-11-12 | 联想(北京)有限公司 | Rolling annealing process of 5-series aluminum alloy |
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Application publication date: 20171117 |