CN107236917A - A kind of aluminium alloy wrought heat treatment method - Google Patents
A kind of aluminium alloy wrought heat treatment method Download PDFInfo
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- CN107236917A CN107236917A CN201710535255.1A CN201710535255A CN107236917A CN 107236917 A CN107236917 A CN 107236917A CN 201710535255 A CN201710535255 A CN 201710535255A CN 107236917 A CN107236917 A CN 107236917A
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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
- C22F1/057—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 copper as the next major constituent
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Abstract
The aluminium alloy wrought heat treatment method of the present invention, comprises the following steps：1) alloy, is subjected to predeformation at ambient temperature；2) 2~5h, is incubated at 520 DEG C~550 DEG C, then in 35 DEG C of ± 5 DEG C of quenching-in water 2min；3) 8~16h of Ageing Treatment at 176~184 DEG C, then air cooling.Compared with traditional T6 heat treatments, the thermomechanical treatment process of the present invention introduces predeformation before using solid solution aging, so that plasticity is also greatly improved while the intensity of Al Cu Mn alloys is improved, intensity improves 7.3%, elongation percentage improves 35.69%, respectively reaches 450.9MPa and 17.26%.
Description
Technical field
The invention belongs to field of aluminum alloy heat treatment technology, specially a kind of aluminium alloy wrought heat treatment method.
Background technology
Made of Al-Cu alloy belongs to 2xxx line aluminium alloys, with good high temperature performance, higher specific strength, good weldering
Performance and fracture toughness are connect, aerospace field is widely used in.Al-Cu-Mn systems alloy as typical 2xxx aluminium alloys, its
Operating temperature is -250 DEG C~300 DEG C, is the conventional structural material of Aero-Space, such as Future Launch Rocket welding oxidant groove and
Supersonic plane covering and constitutional detail etc..Under normal circumstances, after solution treatment, before Ageing Treatment, to 2xxx alloys
Organization of regulation control can be played and improve the effect of mechanical property by carrying out appropriate cold deformation.But practice in find, alloy through heat at
Although intensity is improved after reason, fail to play the effect for improving plasticity very well.So, for Al-Cu-Mn systems alloy, need
A kind of Technology for Heating Processing is developed, plasticity can be also improved while alloy strength is improved.
The content of the invention
Although being improved to solve intensity after the aluminum alloy heat processing that prior art is present, fail to play raising very well
The defect of the effect of plasticity, the present invention provides a kind of aluminium alloy wrought heat treatment method.
A kind of aluminium alloy wrought heat treatment method, comprises the following steps：
1), room temperature pre-treatment
Alloy is carried out at ambient temperature to roll/compress predeformation, predeformation amount is 3%~35%, and deflection one
It is secondary to complete；It is preferred that predeformation amount be 5%, 10%, 20% and 30%, optimal predeformation amount 20%, it is preferred that deformation is in liquid
Carried out in press or roll mill；
2), solution treatment
Alloy after predeformation is first incubated 2~5h at 520 DEG C~550 DEG C, then in 35 DEG C of ± 5 DEG C of quenching-in waters
2min, wherein quenching transfer is completed in 10s；It is preferred that, alloy is incubated 3h at 535 DEG C；
3) Ageing Treatment
Aluminium alloy is put into electric heating constant-temperature blowing drying box 8~16h of Ageing Treatment at a temperature of 176~184 DEG C, preferably
, then the Ageing Treatment 12h at 180 DEG C carries out air cooling.
Further, Ageing Treatment starts after solution treatment terminates in 1h.
The heat treatment method of the present invention is particularly suitable for use in Al-Cu-Mn alloys；It is preferred that, each component in Al-Cu-Mn alloys
Weight/mass percentage composition be：Cu：5.85~6.8%, Mn：0.20%~0.40%, Si：≤ 0.20%, Fe：≤ 0.30% He
Mg：≤ 0.02%, remaining Al.Further, the weight/mass percentage composition of each component is in Al-Cu-Mn alloys：Cu：6.227%th,
Mg：0.005%th, Mn：0.243%th, Si：0.056%th, Zr：0.179%th, Fe：0.142%th, Mg：0.02%th, Zn：0.009%th,
Ti：0.039% and V：0.087%, surplus Al.
Beneficial effect：
1st, compared with traditional T6 heat treatments, thermomechanical treatment process of the invention improves the intensity of Al-Cu-Mn alloys
7.3%, elongation percentage improves 35.69%, respectively reach 450.9MPa and 17.26%；
2nd, this technique introduces predeformation before using solid solution aging so that coarse grain is tiny in the fragmentation after predeformation
Dispersed precipitate, improves alloy strength, simultaneously because the dislocation that predeformation is introduced provides more favourable positions for θ ' phase forming cores
Put, a large amount of θ ' are mutually separated out, accelerate θ ' phases particle coarsening in desolvation process, desolvation process, improve plastic property.Compared to solid
Predeformation is introduced before molten rear timeliness, plastic property is greatly improved.
Embodiment
Embodiment 1
A kind of aluminium alloy wrought heat treatment method, comprises the following steps：
1), room temperature pre-treatment
Alloy is subjected to rolling predeformation at ambient temperature, predeformation amount is that 3%, deflection is once completed；
2), solution treatment
Alloy after predeformation is first incubated 5h at 520 DEG C, then in 30 DEG C of quenching-in water 2min, wherein quenching transfer exists
Completed in 10s；
3) Ageing Treatment
Aluminium alloy is put into electric heating constant-temperature blowing drying box Ageing Treatment 16h at 176 DEG C, Gu Ageing Treatment is at solid solution
Reason terminates beginning in rear 1h, then carries out air cooling.
Embodiment 2
A kind of aluminium alloy wrought heat treatment method, comprises the following steps：
1), room temperature pre-treatment
Alloy is compressed to predeformation 35% at ambient temperature, deflection is once completed；
2), solution treatment
Alloy after predeformation is first incubated 2h at 550 DEG C, then in 40 DEG C of quenching-in water 2min, wherein quenching transfer exists
Completed in 10s；
3) Ageing Treatment
Aluminium alloy is put into electric heating constant-temperature blowing drying box Ageing Treatment 8h at 184 DEG C, air cooling is then carried out.Gu timeliness
Processing starts after solution treatment terminates in 1h.
Embodiment 3
Experiment used is Al-Cu-Mn sheet alloys, and its composition and weight/mass percentage composition are：6.227%Cu, 0.005%
Mg, 0.243%Mn, 0.056%Si, 0.179%Zr, 0.142%Fe, 0.02%Mg, 0.009%Zn, 0.039%Ti,
0.087%V, surplus Al.
A kind of aluminium alloy wrought heat treatment method
First 1), room temperature pre-treatment
Alloy is subjected to rolling predeformation at ambient temperature, predeformation amount is followed successively by 20%, and deflection is once completed；
2), solution treatment
Alloy after predeformation is first incubated 3h at 535 DEG C, then in 35 DEG C of quenching-in water 2min, wherein quenching transfer exists
Completed in 10s；
3) Ageing Treatment
Aluminium alloy is put into electric heating constant-temperature blowing drying box Ageing Treatment 12h, air cooling at 180 DEG C, Gu Ageing Treatment exists
Solution treatment terminates beginning in rear 1h.
Alloy obtained by the present invention is subjected to greenhouse stretching in CMT-5205 universal testing machines with 2mm/min draw speed
Experiment, determines its tensile strength, yield strength and elongation percentage, is contrasted with traditional T6 Al-Cu-Mn alloys being heat-treated,
As a result it is as follows：
Table 1 Al-Cu-Mn alloy strengths and elongation percentage after the thermomechanical treatment of the present invention
As shown in Table 1：Compared with traditional T6 Technologies for Heating Processing, by the predeformation of the present invention, solid solution, aging strengthening model
After technique, 7.3% and 35.69% has been respectively increased in Al-Cu-Mn alloy strengths and elongation percentage, reached 450.9MPa and
17.26%, mechanical property is more preferably.
Claims (10)
1. a kind of aluminium alloy wrought heat treatment method, it is characterised in that comprise the following steps：
1), room temperature pre-treatment
Alloy is carried out at ambient temperature roll/compress predeformation；
2), solution treatment
Alloy after predeformation is first incubated 2~5h at 520 DEG C~550 DEG C, then in 35 DEG C of ± 5 DEG C of quenching-in water 2min, its
Middle quenching transfer is completed in 10s；
3) Ageing Treatment
Aluminium alloy is put into electric heating constant-temperature blowing drying box 8~16h of Ageing Treatment at 176~184 DEG C, air cooling is then carried out.
2. aluminium alloy wrought heat treatment method as claimed in claim 1, it is characterised in that step 1) in predeformation amount be
3%~35%, and deflection once completes.
3. aluminium alloy wrought heat treatment method as claimed in claim 2, it is characterised in that step 1) in predeformation amount
20%.
4. aluminium alloy wrought heat treatment method as claimed in claim 1, it is characterised in that step 2) in alloy at 535 DEG C
It is incubated 3h.
5. aluminium alloy wrought heat treatment method as claimed in claim 1, it is characterised in that step 3) in electric heating constant temperature air blast
Ageing Treatment 12h at 180 DEG C in drying box.
6. the aluminium alloy wrought heat treatment method as described in claim any one of 1-5, it is characterised in that Ageing Treatment is in solid solution
Processing terminates beginning in rear 1h.
7. aluminium alloy wrought heat treatment method as claimed in claim 1, it is characterised in that the alloy material used is Al-Cu-
Mn alloys.
8. aluminium alloy wrought heat treatment method as claimed in claim 7, it is characterised in that each group in the Al-Cu-Mn alloys
Point weight/mass percentage composition be：Cu：5.85~6.8%, Mn：0.20%~0.40%, Si：≤ 0.20%, Fe：≤ 0.30% He
Mg：≤ 0.02%, remaining Al.
9. aluminium alloy wrought heat treatment method as claimed in claim 7, it is characterised in that each group in the Al-Cu-Mn alloys
Point weight/mass percentage composition be：Cu：6.227%th, Mg：0.005%th, Mn：0.243%th, Si：0.056%th, Zr：0.179%th, Fe：
0.142%th, Mg：0.02%th, Zn：0.009%th, Ti：0.039% and V：0.087%, surplus Al.
10. aluminium alloy wrought heat treatment method as claimed in claim 1 or 2, it is characterised in that the step 1) in roll
System/compression predeformation is carried out in hydraulic press or roll mill.
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| CN107236917B CN107236917B (en) | 2019-02-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136697A (en) * | 2018-08-28 | 2019-01-04 | 兰州飞行控制有限责任公司 | A kind of high intensity aluminum bronze line aluminium alloy |
Citations (6)
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|---|---|---|---|---|
| US20020121319A1 (en) * | 2000-12-21 | 2002-09-05 | Chakrabarti Dhruba J. | Aluminum alloy products having improved property combinations and method for artificially aging same |
| CN1675389A (en) * | 2002-08-20 | 2005-09-28 | 克里斯铝轧制品有限公司 | Al-cu alloy with high toughness |
| CN100999809A (en) * | 2006-01-09 | 2007-07-18 | 中南大学 | Aluminium base copper alloy tank board heat treating process |
| US20080121317A1 (en) * | 2002-08-20 | 2008-05-29 | Aleris Aluminum Koblenz Gmbh | HIGH DAMAGE TOLERANT Al-Cu ALLOY |
| CN103469129A (en) * | 2013-08-30 | 2013-12-25 | 天津大学 | Aging heat treatment method of 2219 aluminum alloy |
| CN103589978A (en) * | 2013-11-22 | 2014-02-19 | 天津大学 | Method for determining deformation heat treatment conditions for improving 2219 aluminium alloy performance |
-
2017
- 2017-07-04 CN CN201710535255.1A patent/CN107236917B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020121319A1 (en) * | 2000-12-21 | 2002-09-05 | Chakrabarti Dhruba J. | Aluminum alloy products having improved property combinations and method for artificially aging same |
| CN1675389A (en) * | 2002-08-20 | 2005-09-28 | 克里斯铝轧制品有限公司 | Al-cu alloy with high toughness |
| US20080121317A1 (en) * | 2002-08-20 | 2008-05-29 | Aleris Aluminum Koblenz Gmbh | HIGH DAMAGE TOLERANT Al-Cu ALLOY |
| CN100999809A (en) * | 2006-01-09 | 2007-07-18 | 中南大学 | Aluminium base copper alloy tank board heat treating process |
| CN103469129A (en) * | 2013-08-30 | 2013-12-25 | 天津大学 | Aging heat treatment method of 2219 aluminum alloy |
| CN103589978A (en) * | 2013-11-22 | 2014-02-19 | 天津大学 | Method for determining deformation heat treatment conditions for improving 2219 aluminium alloy performance |
Non-Patent Citations (1)
| Title |
|---|
| 《TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109136697A (en) * | 2018-08-28 | 2019-01-04 | 兰州飞行控制有限责任公司 | A kind of high intensity aluminum bronze line aluminium alloy |
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Effective date of registration: 20220104 Address after: 215500 Hualin Road, Xushi Industrial Park, DONGBANG Town, Changshu City, Suzhou City, Jiangsu Province Patentee after: CHANGSHU HENGTAI PRECISION METAL PRODUCTS CO.,LTD. Address before: 213001 No. 1801 Wu Cheng Road, Changzhou, Jiangsu Patentee before: JIANGSU University OF TECHNOLOGY |
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