CN102732760A - Aluminum alloy plate for automobile bodies - Google Patents
Aluminum alloy plate for automobile bodies Download PDFInfo
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- CN102732760A CN102732760A CN2012102504263A CN201210250426A CN102732760A CN 102732760 A CN102732760 A CN 102732760A CN 2012102504263 A CN2012102504263 A CN 2012102504263A CN 201210250426 A CN201210250426 A CN 201210250426A CN 102732760 A CN102732760 A CN 102732760A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 65
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229910052725 zinc Inorganic materials 0.000 claims abstract 2
- 238000012545 processing Methods 0.000 abstract description 14
- 239000003973 paint Substances 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 46
- 239000000463 material Substances 0.000 description 41
- 229910045601 alloy Inorganic materials 0.000 description 26
- 239000000956 alloy Substances 0.000 description 26
- 239000003921 oil Substances 0.000 description 21
- 238000004088 simulation Methods 0.000 description 19
- 229910000737 Duralumin Inorganic materials 0.000 description 17
- 238000000034 method Methods 0.000 description 17
- 239000011777 magnesium Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- 238000000137 annealing Methods 0.000 description 11
- 238000005097 cold rolling Methods 0.000 description 11
- 238000005098 hot rolling Methods 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 239000004411 aluminium Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
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- 229910000831 Steel Inorganic materials 0.000 description 5
- MKPXGEVFQSIKGE-UHFFFAOYSA-N [Mg].[Si] Chemical compound [Mg].[Si] MKPXGEVFQSIKGE-UHFFFAOYSA-N 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
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- 238000007669 thermal treatment Methods 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
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- 238000011105 stabilization Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001100 6111 aluminium alloy Inorganic materials 0.000 description 1
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000001996 bearing alloy Substances 0.000 description 1
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Abstract
本发明属于铝合金板材技术领域，具体提供了一种车身用铝合金板材。所述铝合金的成分及其质量百分比含量为：Si 0.5~0.8wt.%，Mg 0.6~1.2wt.%，Cu 0.6~1.1wt.%，Mn 0.15~0.3wt.%，其余为Al和微量杂质，所述微量杂质的组成为：Fe<0.3wt.%，Zn<0.2wt.%，Ti<0.1wt.%，Cr<0.2wt.%；且Mg和Si的质量比在1~2之间；将上述铝合金固溶淬火处理后在20分钟内进行热处理，热处理温度为100℃~150℃，热处理时间10分钟~2小时。上述车身用铝合金板材在烤漆后具有更高的强度且热暴露下性能稳定，同时在烤漆前仍然具有较好的加工成形性能。The invention belongs to the technical field of aluminum alloy plates, and specifically provides an aluminum alloy plate for a vehicle body. The composition and mass percentage content of the aluminum alloy are: Si 0.5~0.8wt.%, Mg 0.6~1.2wt.%, Cu 0.6~1.1wt.%, Mn 0.15~0.3wt.%, and the rest are Al and trace Impurities, the composition of the trace impurities is: Fe<0.3wt.%, Zn<0.2wt.%, Ti<0.1wt.%, Cr<0.2wt.%; and the mass ratio of Mg and Si is between 1~2 Between; heat treatment is carried out within 20 minutes after the above-mentioned aluminum alloy is solution quenched, the heat treatment temperature is 100° C. to 150° C., and the heat treatment time is 10 minutes to 2 hours. The above-mentioned aluminum alloy plate for the vehicle body has higher strength after baking paint and stable performance under heat exposure, and at the same time still has good processing and forming performance before baking paint.
Description
Technical field
The invention belongs to the aluminum alloy plate materials field, relate to a kind of new automobile vehicle body and use aluminum alloy plate materials with good press formability and baking and hardening performance.
Technical background
Because lightweight is the keying action aspect energy-conservation and the reduction of discharging at transport facility, light material has obtained application widely at automotive field in recent years.Compare with traditional steel, duraluminum density is low, corrosion stability is good and be easy to recovery, so the application of duraluminum on automobile increases year by year.At present, the duraluminum that to be used for stamping forming body of a motor car aluminum alloy plate materials mainly be three trades mark: AA6016, AA6022 and AA6111.These alloys mainly in aluminium, add magnesium elements and element silicon forms.Also added copper in the AA6111 alloy to increase the intensity of alloy.Another important characteristic is that the magnesium elements of these alloys and the content of element silicon compare all less than 1, even less than 0.5.The patent of invention that for example domestic publication number is CN 102031431A " automobile panel is with 6000 series high-performance aluminium alloy plate and method of manufacture thereof "; Granted patent number is the patent of invention " improve 6 * * * heat treating method of line aluminium alloy thin plate formability and baking and hardening performance " of ZL200910043311.5; In the patent of invention relevant with vehicle body plate thermal treatment such as the patent No. WO 00/70115 that granted patent number " is improved the thermal pretreatment technology of 6111 aluminium alloy automobile plate plasticities and baking hardenability " for the patent of invention of ZL 200610046027.X and 2000 announce and the patent No. WO 2005/071127 of announcement in 2005, silicon content is all much larger than magnesium element content in the duraluminum of practical implementation.Above design of alloy is relevant with the manufacturing processed of car body of aluminum alloy.General duraluminum factory through casting, homogenizing, hot rolling, annealing and cold rolling after be prepared into light sheet, clot is transported to automobile factory after thermal pretreatment (T4P) then.These sheet materials are transferred to through impact briquetting and after spraying paint in automobile factory and are carried out the baking vanish processing in the baking oven.Above production process require aluminum alloy thin sheet material to be easy to punching press and in the baking vanish process intensity be increased dramatically to obtain good anti-depression performance.Generally speaking the baking vanish temperature between the 160-190 degree and the time in 30 minutes.Therefore this duraluminum that just requires to select for use can be strengthened in the baking vanish process fast, and silicone content superfluous 6 * * * line aluminium alloy just in time has these characteristics.As a kind of typical precipitation strength duraluminum, 6 of silicone content superfluous (magnesium silicone content than less than 1) * * * line aluminium alloy has and separates out kinetics faster, and " forerunner is mutually can to form the GP district and β of monocline at short notice in a large number.Again such alloy is carried out stabilization treatment after solid solution and the quench treatment, the intensity that room temperature is placed above alloy of two weeks increases slightly and still can strengthen fast in the baking vanish process.Through the aluminium alloy plate that different thermal treatment process is made, the good and bad difference of performance is very big.
The development of automobile industry is now had higher requirement with aluminum alloy plate materials to vehicle body, especially compares aluminum alloy plate materials with steel of new generation and has more inferior position.At first the client requires body of a motor car to have higher intensity to the attention of crashworthiness, and the aluminium that uses at present intensity after handling through baking vanish is lower than 250Mpa or lower mostly.The high silicon content 6 that secondly at present uses * * * though line aluminium alloy has and separates out kinetics faster, and the silicone content height also is prone to cause these alloys heat in use to expose down that (particularly scatterer, water tank and vapor pipe place) inner strengthening phase is easy to alligatoring and intensity reduces.The alloy of high silicon content also is easy to separate out larger-size silicon grain in the crystal boundary place under heat exposes in addition, causes the decline of corrosion resisting property and fracture toughness property, and these factors can cause military service safety and life factor to reduce.Comprehensive above the analysis, develop a kind of have equally fast the baking vanish enhanced performance but behind the baking vanish intensity higher, anti-depression performance is better, and more stable novel aluminum alloy is extremely important under heat exposes.We not only can obtain a kind of new car body of aluminum alloy and choose with sheet material steam supply depot like this, also will strengthen the competitive power of lightweight aluminum alloy plate materials and traditional steel, promote the widespread use of duraluminum on body of a motor car.And more show advantage in the higher area of envrionment temperature (like the Middle East) with the automobile that this novel material is made.
Summary of the invention
To the problems referred to above, the present invention provides a kind of vehicle body to use aluminum alloy plate materials, uses the sheet material of such duraluminum preparation having stable performance under higher intensity and the heat exposure behind the baking vanish, before baking vanish, still has simultaneously to shape performance preferably.
For realizing the purpose of foregoing invention, the present invention adopts following technical scheme:
A kind of vehicle body is used aluminum alloy plate materials, and the composition of said duraluminum and mass percentage content thereof are: Si0.5 ~ 0.8wt.%, Mg0.6 ~ 1.2wt.%; Cu0.6 ~ 1.1wt.%, Mn0.15 ~ 0.3wt.%, all the other are Al and trace impurity; Consisting of of said trace impurity: Fe < 0.3wt.%; Zn < 0.2wt.%, Ti < 0.1wt.%, Cr < 0.2wt.%; And the mass ratio of Mg and Si is between 1 ~ 2;
The back is handled in above-mentioned duraluminum solution hardening in 20 minutes, heat-treat, thermal treatment temp is 100 ℃ ~ 150 ℃, heat treatment time 10 minutes ~ 2 hours.
The total percentage composition of the quality of Mg, Si and Cu preferably is lower than 2.5wt.% in the said duraluminum.
Si and Cu are preferably greater than 0.8 with respect to the mass ratio of Mg [(Si+0.5 * Cu)/Mg] in the said duraluminum.
Said thermal treatment temp is preferably 120 ℃ ~ 150 ℃, and heat treatment time is preferably 5 minutes ~ and 30 minutes.
Do further explanation and explanation in the face of the present invention down:
Above-mentioned solution hardening Treatment Technology scheme is meant that alloy is heated to 560 ℃ of constant temperature and keeps 10min-60min, and preferred 30min transfers to cooling fast in the water after making surplus fully be dissolved in the sosoloid mutually, to obtain supersaturated solid solution.(the solution hardening treatment process is very common prior art, and the 6xxx line aluminium alloy is all the same).
Magnesium, silicon and three kinds of elements of copper are vehicle body plates with 6 * * * main alloy element that line aluminium alloy adds, the aging hardening behavior of such alloy just with these elements gathering partially and separate out relevant in heat treatment process.For not copper bearing alloy, magnesium/silicone content does not have the quick age-hardening characteristic than high alloy, therefore can not strengthen with body of a motor car aluminium sheet material as baking vanish.Intensity increases after adding the copper baking vanish, but in heat treatment process be easy to the same with element silicon of copper gather at crystal boundary partially, causes the decline of press formability and resistance to corrosion.Contriver's systematic study copper influence that magnesium and element silicon are separated out in ag(e)ing process, designed above alloying constituent.In above alloy component range, the alloying element of interpolation is mainly separated out at intracrystalline, and crystal boundary gathers tendency partially significantly to be reduced.Above-mentioned in addition alloy exposes down in the medium-term and long-term heat of body of a motor car sheet material use and can form a large amount of lath-shaped Q, and " phase, this phase alligatoring speed is slower, makes alloy softening rate reduction in the process under arms, ILS.
The more important thing is above-mentioned alloy through certain stabilization treatment, still have tangible baking vanish strengthening effect more than two months in the room temperature placement.At present, the stabilization treatment of aluminum alloy for vehicle body plate mainly is divided into two types: one type is after quenching, to carry out low temperature long time treatment (temperature 60-80 ℃ time 5-20 hour) immediately, is called preageing and handles or T4P; Another kind of is after quenching, not handle immediately; But the short period of time of behind room temperature seasoning certain hour, carrying out comparatively high temps again handle (the nature residence time from several minutes to two week and then handle 1 minute to 20 minute at 180-300 ℃), be called regression treatment or T4R.It is to obtain the very little and at room temperature stable GP district forming core point of size that T4P handles key, and these forming core points can growth fast in the baking vanish process.T4R be make quenching room and solute atoms form in the Natural Aging Process group bunch after handling between high temperature, short time again dissolving get into aluminum substrate, the tissue of this moment reduces with respect to the supersaturated solid solution vacancy concentration after quenching, and is therefore more stable.These two kinds of methods cut both ways; Inventor's systematic study in the aluminum alloy plate materials of invention precipitated phase proposed to be fit to the heat treating method (of the present invention heat treating method) of above-mentioned body of a motor car at the stability and the quick growth effect of each temperature with aluminum alloy plate materials.Can improve the hold-time of above-mentioned body of a motor car with duraluminum formability and baking hardening characteristic and baking hardening characteristic.
Compared with prior art, advantage of the present invention is:
1, through optimizing the alloying constituent proportioning; The present invention can control alloying element gathering partially at crystal boundary effectively; Simultaneously can separate out the strengthening phase that is not easy to alligatoring under the hot environment under arms; So both improve the formability of duraluminum and the intensity behind the baking vanish, guaranteed the stable and solidity to corrosion of performance in its use again.
2, heat treating method of the present invention can carry out in existing body of a motor car sheet material preageing equipment, need not increase new heat treatment equipment; But between the different heat treatment residence time long, meet practice in factory and be convenient to actually operating, and the wide temperature window is arranged, be easy to guarantee constant product quality, can save the energy and facility investment.
3, vehicle body provided by the invention is used aluminum alloy plate materials, formability and baking hardening characteristic good, and also this timber intensity is higher behind the baking vanish, and heat exposes stability and excellent corrosion resistance.Tearing tendency when the present invention can improve automobile factory's vehicle body punching press improves working accuracy and surface quality.The baking and hardening performance hold-time of more crucial is aluminum alloy plate materials provided by the invention can arrive the several months long, and behind the baking vanish sheet alloy to expose down the intensity hold-time in heat longer, military service safety and life-span raising.
4, aluminum alloy plate materials provided by the invention can strengthen the synthesized competitiveness of aluminum alloy plate materials with respect to steel, promotes aluminum alloy plate materials to substitute steel plate and alleviates car body weight, is beneficial to save energy and pollutes with reducing.Because the present invention adopts magnesium silicon mass ratio more than or equal to 1 alloy, with existing magnesium silicon mass ratio less than 1 sheet alloy relatively, over-all properties is more excellent, makes selling point distinct more, helps opening up produce market.
Description of drawings
Fig. 1 is embodiment 2 samples stress-strain(ed) curves before and after the simulation baking vanish when 2 weeks;
Fig. 2 is embodiment 2 samples stress-strain(ed) curves before and after the simulation baking vanish when 1 week;
Fig. 3 is embodiment 6 samples stress-strain(ed) curves before and after the simulation baking vanish when 2 weeks;
Fig. 4 is embodiment 6 samples were simulated the baking vanish front and back in the time of 1 month a stress-strain(ed) curve;
Fig. 5 is comparative example's 2 samples stress-strain(ed) curves before and after the simulation baking vanish when 2 weeks;
Fig. 6 is comparative example's 2 samples were simulated the baking vanish front and back in the time of 1 month a stress-strain(ed) curve.
Embodiment
Below in conjunction with case study on implementation the inventive method is further explained the line data explanation of going forward side by side, but the present invention is not limited to these embodiment.Room temperature according to the invention is generally between 0 ℃-30 ℃ all can.
The embodiment specimen in use is divided into A and B, and the chemical ingredients of A (magnesium silicon mass ratio is 1) is: Mg 0.75wt.%, and Si 0.75wt.%, Cu 0.8wt.%, Mn 0.15wt.%, Cr 0.15wt.%, Ti 0.12wt.%, Fe0.20wt.%, all the other are aluminium; The chemical ingredients of B (magnesium silicon mass ratio is 2) is: Mg1.0wt.%, and Si0.5wt.%, Cu0.8wt.%, Mn0.15wt.%, Cr0.15wt.%, Ti0.12wt.%, Fe0.20wt.%, all the other are aluminium.The chemical ingredients of comparative example C (magnesium silicon mass ratio is 0.5, and the traditional vehicle body is used duraluminum) is: Mg0.5wt.%, and Si1.0wt.%, Cu0.8wt.%, Mn0.15wt.%, Cr0.15wt.%, Ti0.12wt.%, Fe0.20wt.%, all the other are aluminium.The alloy rigidity test is carried out on HXD-1000T type Vickers testing machine, and experiment load is 4.9N, and the time length is 10s.Tension test employing standard is: GB228-87.Erichsen number is determined on the GBW-60Z type cupping machine that Jinan company of Huaxing produces and carries out, and adopts the GB/T4156-2007 standard, is used to estimate punching performance.(if in fact add the processing strain, intensity usually can high 8-10HV (about 30Mpa) behind the baking vanish in not simulation processing strain before the simulation baking vanish.
Designed following examples based on above consideration:
The comparative example 1
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the C aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 120 ℃ * 0.5h immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
The comparative example 2
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the C aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 150 ℃ * 10min immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
Embodiment 1
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the A aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 120 ℃ * 0.5h immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
Embodiment 2
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the A aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 120 ℃ * 1h immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
Embodiment 3
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the A aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 150 ℃ * 20min immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
Embodiment 4
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the A aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 150 ℃ * 30min immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the B aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 120 ℃ * 0.5h immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
Embodiment 6
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the B aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 120 ℃ * 1h immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
Embodiment 7
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the B aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 150 ℃ * 20min immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
Embodiment 8
After the processing of 550 ℃ * 24h homogenizing, crop mills face to the B aluminium alloy cast ingot in the recirculated air resistance furnace, through hot rolling, intermittent annealing and the thick thin plate of last cold rolling one-tenth 1mm.Thin plate carries out 560 ℃ * 30min solution treatment shrend in the air cycle resistance furnace after, in oil bath furnace, carry out 150 ℃ * 30min immediately and handle, get aluminum alloy plate materials; At room temperature park 1 day, 2 weeks, 1 month more respectively and carry out hardness test and tension test after 2 months.The simulation baking vanish carries out in oil bath furnace, and system is 180 ℃ * 30min, carries out hardness test and tension test behind the baking vanish.
Embodiment 9
Thermal cycling stability for test implementation example alloy A and B relative proportion C alloy; We respectively the sample behind Comparative Examples 1, embodiment 1 and the embodiment 5 simulation baking vanish temperature be in 180 ℃ the oil bath furnace time of carrying out be 1 week, two weeks, three weeks and thermal treatment all around, and the microhardness of these samples is tested.
Table 1-3 is the micro-hardness testing value that each embodiment simulates the baking vanish front and back, and above embodiment all repeats more than 3 times, so microhardness values is the MVs of a large amount of experiments.
Hardness value after table 1 embodiment 1-4 supply of material state is handled with the simulation baking vanish
Hardness value after table 2 embodiment 5-8 supply of material state is handled with the simulation baking vanish
The Erichsen number (mm) of table 3 comparative example 1 and embodiment 1 and 5 samples supply of material state
Table 4 is got the measuring result that typical case is carried out tension test
Hardness value after 9 six kinds of sample thermal cyclings of table 5 embodiment
Compare the comparative example, the result of table 1-table 5 shows that the basic mechanical performance index and the conventional alloys of body of a motor car aluminium sheet provided by the invention are suitable, but performance is more stable during room temperature storage, and the baking vanish property retention time is longer.Magnesium silicon provided by the invention is easy to punching press than high aluminum alloy plate materials before baking vanish, intensity is also bigger behind the baking vanish.Through simulating hot exposure test, we find the hardness value of sheet alloy of the present invention after for a long time far above comparative example (conventional alloys), prove that sheet alloy provided by the invention has higher military service safety performance and longer work-ing life.
Can find out obviously that by table 1-5 and accompanying drawing 1-6 duraluminum of the present invention and heat treating method can prepare the body of a motor car aluminum alloy plate materials of high comprehensive performance; This sheet material formability and baking hardening characteristic good; And intensity is higher behind the baking vanish, and heat exposes stability and excellent corrosion resistance.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014449A (en) * | 2012-12-03 | 2013-04-03 | 滁州迪蒙德模具制造有限公司 | Processing technology for high-strength aluminium alloy foaming mould casting |
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| JP2020509171A (en) * | 2016-12-16 | 2020-03-26 | ノベリス・インコーポレイテッドＮｏｖｅｌｉｓ Ｉｎｃ． | High strength and high formability aluminum alloy resistant to natural age hardening and method for producing the same |
| CN112522551A (en) * | 2020-11-04 | 2021-03-19 | 佛山科学技术学院 | Ag microalloying aluminum alloy with rapid aging response and preparation method and application thereof |
| US10995397B2 (en) | 2016-12-16 | 2021-05-04 | Novelis Inc. | Aluminum alloys and methods of making the same |
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| CN114892051A (en) * | 2022-05-27 | 2022-08-12 | 大为材料(包头)有限公司 | Aluminum alloy automobile transmission shaft tube and manufacturing method thereof |
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| CN103014449A (en) * | 2012-12-03 | 2013-04-03 | 滁州迪蒙德模具制造有限公司 | Processing technology for high-strength aluminium alloy foaming mould casting |
| CN103060632A (en) * | 2012-12-18 | 2013-04-24 | 莫纳什大学 | Aluminum alloy for automotive body and heat treatment method |
| CN103290278A (en) * | 2013-06-07 | 2013-09-11 | 湖南大学 | High-energy-absorptivity aluminum alloy for automobile bodies |
| CN103290278B (en) * | 2013-06-07 | 2015-09-16 | 湖南大学 | The high energy absorption capacity aluminium alloy of a kind of body of a motor car |
| CN103924134A (en) * | 2014-03-20 | 2014-07-16 | 安徽耀强精轮机械有限公司 | Improvement formula and heat treatment process of aluminum alloy material |
| CN103993208B (en) * | 2014-05-29 | 2015-12-30 | 合肥工业大学 | A kind of Al-Mg-Si-Cu-Mn-Er alloy material and preparation method thereof |
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| EP4455356A3 (en) * | 2014-10-28 | 2024-11-27 | Novelis, Inc. | Aluminum alloy products and a method of preparation |
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| US11193192B2 (en) | 2014-10-28 | 2021-12-07 | Novelis Inc. | Aluminum alloy products and a method of preparation |
| CN110964954A (en) * | 2014-10-28 | 2020-04-07 | 诺维尔里斯公司 | Aluminum alloy product and preparation method |
| EP3699309A1 (en) * | 2014-10-28 | 2020-08-26 | Novelis Inc. | Aluminum alloy products and a method of preparation |
| CN105689564A (en) * | 2014-12-11 | 2016-06-22 | 通用汽车环球科技运作有限责任公司 | Metal sheet and method for its manufacture |
| CN105177377A (en) * | 2015-08-26 | 2015-12-23 | 肖练 | Protective door with interlayer |
| CN107338377A (en) * | 2016-08-02 | 2017-11-10 | 王映朴 | The processing method of aluminium alloys for auto body plate |
| US10995397B2 (en) | 2016-12-16 | 2021-05-04 | Novelis Inc. | Aluminum alloys and methods of making the same |
| JP2020509171A (en) * | 2016-12-16 | 2020-03-26 | ノベリス・インコーポレイテッドＮｏｖｅｌｉｓ Ｉｎｃ． | High strength and high formability aluminum alloy resistant to natural age hardening and method for producing the same |
| JP7025428B2 (en) | 2016-12-16 | 2022-02-24 | ノベリス・インコーポレイテッド | High-strength and high-formability aluminum alloy resistant to natural aging hardening and its manufacturing method |
| US11530473B2 (en) | 2016-12-16 | 2022-12-20 | Novelis Inc. | High strength and highly formable aluminum alloys resistant to natural age hardening and methods of making the same |
| CN109136685B (en) * | 2018-11-14 | 2019-09-13 | 广东和胜工业铝材股份有限公司 | A kind of aluminum alloy and its preparation method and application |
| CN109136685A (en) * | 2018-11-14 | 2019-01-04 | 广东和胜工业铝材股份有限公司 | Aluminum alloy and preparation method and application thereof |
| CN112522551A (en) * | 2020-11-04 | 2021-03-19 | 佛山科学技术学院 | Ag microalloying aluminum alloy with rapid aging response and preparation method and application thereof |
| CN113981281A (en) * | 2021-10-15 | 2022-01-28 | 华峰铝业有限公司 | High-strength rapid aging aluminum alloy and preparation method thereof |
| CN114892051A (en) * | 2022-05-27 | 2022-08-12 | 大为材料(包头)有限公司 | Aluminum alloy automobile transmission shaft tube and manufacturing method thereof |
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