CN105385971B - A kind of aging technique after Al Mg Si systems alloy bending deformation - Google Patents
A kind of aging technique after Al Mg Si systems alloy bending deformation Download PDFInfo
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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 the aging technique after a kind of alloy bending deformation of Al Mg Si systems, including+180 DEG C/2 hours 160 DEG C/9 hours Ageing Treatments are carried out to Al Mg Si systems alloy.The invention provides the aging technique of improving performance after a kind of alloy bending deformation of Al Mg Si systems, the high performance requirements of product are disclosure satisfy that.
Description
Technical field
The invention belongs to alloy field, and in particular to the aging technique after a kind of Al-Mg-Si system alloy bending deformation.
Background technology
Automotive light weight technology is quickly grown, the features such as aluminium alloy has moderate strength, light weight, easy-formation, it is adaptable to automobile
Light-weight design.
The natrual ageing of 6082 trade mark alloys is relatively strong, and hardness lifting is very fast；Under T4 states, alloy needed in bending compared with
Big external force could complete bending, and this process produces the dislocation of greater density around the hard phase that natrual ageing is separated out, and forms position
Wrong enrichment region.Al-Mg-Si system alloy ageing strengthening principle be mainly α (Al bases supersaturated solid solution) → GP areas → β " → β ' →
β, but the dislocation that bending is produced influences the intensity after the follow-up timeliness of alloy.
At present, include for the existing standard of 6082 alloy designations：(1) GMW15665 standards：T6 performances, tension >=
300Mpa, surrender >=270Mpa, elongation percentage >=8%；(2) EN755 performance standards：T6 performances, tension >=290Mpa, surrender >=
250Mpa, elongation percentage >=8%；(3) GB/T6892 performance standards：T6 performances, tension >=310Mpa, surrender >=260Mpa, extension
Rate >=10%.
However, the requirement of vehicle beam performance tends to be personalized, the height of 6082 trade mark alloys after further requirement bending
Performance standard is as follows：T6 performances, tension >=320Mpa, surrender >=290Mpa, elongation percentage >=8%.
The content of the invention
Present inventor's research demonstrates the performance that the alloy after aging technique doubling bending deformation finally obtains and risen certainly
Qualitative effect is acted on.The precipitation rate of aluminum alloy hard phase depends on the temperature of timeliness；Ag(e)ing process, replys the same of dislocation structure
When, the precipitation ratio for reducing hard is the key of this time invention, so as to be lifted after providing a kind of 6082 alloy bending deformation
The aging technique of performance, disclosure satisfy that its high performance requirements.
Specifically, intensity and hard phase precipitation state relation as shown in figure 1, wherein the areas of GP I and the areas of GP II represent when
During effect, the order that hard phase precipitation process is undergone：The enrichment of hard phase atom forms unordered enrichment region, referred to as GP I
Area；With the extension of timeliness soaking time, the hard phase atom that these enrichments are got up is gradually orderly to line up, and forms rich
Collect the areas of area GP II.As shown in figure 1, intensity peak is first at β " ends and β '.
Further, the present invention uses low temperature aging first, the dislocation that bending deformation is produced is replied, while avoiding hard phase
It is substantial amounts of to separate out；Then aging temp is somewhat lifted, is incubated, the performance of product is improved maximum capacity.The present invention passes through
Aging technique is changed, makes hardening constituent based on β " and β ', reduces β phases, promotes hardening constituent and matrix mainly based on coherence state,
Lift its performance.
Therefore, it is an object of the invention to provide the aging technique after a kind of Al-Mg-Si system alloy bending deformation.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of aging technique after Al-Mg-Si system alloy bending deformation, including the Al-Mg-Si system alloy is carried out
160 DEG C of ± 5 minutes ± 3 DEG C/9 hours+180 DEG C of ± 5 minutes ± 3 DEG C/2 hours Ageing Treatments.
Further, including to the Al-Mg-Si system alloy+180 DEG C/2 hours 160 DEG C/9 hours Ageing Treatments are carried out.
Further, the Al-Mg-Si system alloy is 6XXX aluminium alloys.
Further, the 6XXX aluminium alloys are 6082 aluminium alloys.
Beneficial effect：The invention provides the aging technique of improving performance after a kind of Al-Mg-Si system alloy bending deformation,
It disclosure satisfy that the high performance requirements of product.
Brief description of the drawings
Fig. 1 be intensity and hard phase precipitation state graph of a relation, wherein, abscissa represents timeliness soaking time, ordinate generation
Table intensity.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.It should be understood that following examples are merely to illustrate this
Invention is not for limitation the scope of the present invention.
Embodiment 1,
Testing equipment：Aluminium extruding machine -2200T, finished product sawing machine, pressing and bending machine, timeliness electric furnace, band saw, horizontal milling machine,
20T universal testing machines.
Test procedure：
1) 6082 alloys are squeezed into bumper bar cross beam sectional bar by 2200T extruders；
2) length-specific is sawed into by finished product sawing machine；
3) bending and molding is carried out on pressing and bending machine；
4) former technique (A) the timeliness test condition different with (B-J) of the invention is carried out respectively using same timeliness electric furnace；
5) using band saw and horizontal milling machine, the making of tensile sample is carried out to product after timeliness respectively, in case performance detection；
According to GB/T16865 standards, every group of sample preparation 3-10 piece；
6) performance detection is carried out using 20T universal testing machines, measuring method performs GB/T228 standards.
Result of the test is as follows：
Explanation：According to performance standard (after bending)：T6 performances, tension >=320Mpa, surrender >=290Mpa, elongation percentage >=
8%.
A, 180 DEG C/6 hours (former technique)：
| Tension Mpa | Surrender Mpa | Elongation percentage % |
| 321.79 | 283.59 | 10.30 |
| 329.79 | 311.11 | 14.07 |
| 327.02 | 311.00 | 14.60 |
| 306.92 | 276.23 | 16.98 |
| 296.94 | 269.57 | 17.63 |
| 319.58 | 303.32 | 16.98 |
| 324.92 | 306.09 | 12.07 |
| 321.79 | 293.59 | 10.30 |
| 301.00 | 270.87 | 15.30 |
| 309.22 | 281.02 | 17.05 |
B, 180 DEG C/7 hours：
| Tension Mpa | Surrender Mpa | Elongation percentage % |
| 311.72 | 279.63 | 17.22 |
| 316.83 | 281.57 | 16.85 |
| 320.09 | 291.77 | 13.08 |
C, 180 DEG C/8 hours：
| Tension Mpa | Surrender Mpa | Elongation percentage % |
| 307.63 | 281.77 | 14.18 |
| 309.22 | 290.11 | 13.96 |
| 310.57 | 289.63 | 14.23 |
D ,+180 DEG C/2 hours 160 DEG C/6 hours：
| Tension Mpa | Surrender Mpa | Elongation percentage % |
| 309.22 | 281.02 | 17.05 |
| 306.99 | 279.31 | 16.92 |
| 311.66 | 287.28 | 15.87 |
E ,+180 DEG C/2 hours 160 DEG C/7 hours：
| Tension Mpa | Surrender Mpa | Elongation percentage % |
| 306.92 | 276.23 | 16.98 |
| 311.22 | 283.96 | 15.28 |
| 309.93 | 281.36 | 16.03 |
F：+ 180 DEG C/2 hours 160 DEG C/8 hours：
G：160 DEG C/9 hours：
| Tension Mpa | Surrender Mpa | Elongation percentage % |
| 316.44 | 300.54 | 13.95 |
| 318.00 | 301.88 | 15.25 |
| 315.58 | 298.36 | 15.98 |
H：160 DEG C/10 hours：
| Tension Mpa | Surrender Mpa | Elongation percentage % |
| 324.92 | 306.09 | 12.07 |
| 319.89 | 300.11 | 14.03 |
| 321.07 | 296.33 | 15.69 |
I：160 DEG C/11 hours：
| Tension Mpa | Surrender Mpa | Elongation percentage % |
| 322.36 | 291.67 | 16.78 |
| 319.88 | 279.68 | 17.21 |
| 326.88 | 299.63 | 15.30 |
J ,+180 DEG C/2 hours 160 DEG C/9 hours：
As can be known from the above table, the present invention has found that preferred Ageing conditions are small for 160 DEG C/9 on substantial amounts of experiment basis
When+180 DEG C/2 hours, product can realize that 100% performance is qualified.After being improved through present invention process, product disclosure satisfy that pair
The special high performance requirements of bumper beam, crossbeam product disclosure satisfy that the requirement of follow-up vehicle test.
Claims (2)
1. the aging technique after a kind of Al-Mg-Si system alloy bending deformation, it is characterised in that including to the Al-Mg-Si systems
Alloy carries out+180 DEG C/2 hours 160 DEG C/9 hours Ageing Treatments；The Al-Mg-Si system alloy is 6XXX aluminium alloys.
2. aging technique as claimed in claim 1, it is characterised in that the 6XXX aluminium alloys are 6082 aluminium alloys.
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| CN109594027A (en) * | 2019-01-02 | 2019-04-09 | 上海友升铝业有限公司 | A kind of ageing hot processing method improving 6 line aluminium alloy intensity |
| CN112058985B (en) * | 2020-07-28 | 2023-07-18 | 深圳新顿科技有限公司 | Light alloy sheet stamping heat treatment process and stamping device |
Citations (6)
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|---|---|---|---|---|
| US6350329B1 (en) * | 1998-06-15 | 2002-02-26 | Lillianne P. Troeger | Method of producing superplastic alloys and superplastic alloys produced by the method |
| CN1138868C (en) * | 1999-02-12 | 2004-02-18 | 挪威海德罗公开有限公司 | Aluminium alloy contg. magnesium and silicon |
| CN101798649A (en) * | 2010-03-29 | 2010-08-11 | 江苏大学 | Compound 6013-type aluminum alloy microalloyed by zirconium and strontium and preparation method thereof |
| CN102168213A (en) * | 2011-04-15 | 2011-08-31 | 浙江乐祥铝业有限公司 | High-formability and high-strength aluminum alloy material as well as preparation method and application of the high-formability and high-strength aluminum alloy material |
| CN103225049A (en) * | 2013-04-23 | 2013-07-31 | 天津锐新昌轻合金股份有限公司 | Treatment process for improving electric conductivity of medium strength aluminium alloy |
| CN105018804A (en) * | 2014-04-24 | 2015-11-04 | 贵州理工学院 | Al-Mg-Si as-cast aluminum alloy and aging treatment process thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6099475B2 (en) * | 2013-05-01 | 2017-03-22 | 本田技研工業株式会社 | Al-Mg-Si-based alloy member and manufacturing method thereof |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6350329B1 (en) * | 1998-06-15 | 2002-02-26 | Lillianne P. Troeger | Method of producing superplastic alloys and superplastic alloys produced by the method |
| CN1138868C (en) * | 1999-02-12 | 2004-02-18 | 挪威海德罗公开有限公司 | Aluminium alloy contg. magnesium and silicon |
| CN101798649A (en) * | 2010-03-29 | 2010-08-11 | 江苏大学 | Compound 6013-type aluminum alloy microalloyed by zirconium and strontium and preparation method thereof |
| CN102168213A (en) * | 2011-04-15 | 2011-08-31 | 浙江乐祥铝业有限公司 | High-formability and high-strength aluminum alloy material as well as preparation method and application of the high-formability and high-strength aluminum alloy material |
| CN103225049A (en) * | 2013-04-23 | 2013-07-31 | 天津锐新昌轻合金股份有限公司 | Treatment process for improving electric conductivity of medium strength aluminium alloy |
| CN105018804A (en) * | 2014-04-24 | 2015-11-04 | 贵州理工学院 | Al-Mg-Si as-cast aluminum alloy and aging treatment process thereof |
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