CN106636807A - Al-Mg-Si series anti-collision alloy sectional material and manufacturing process thereof - Google Patents
Al-Mg-Si series anti-collision alloy sectional material and manufacturing process thereof Download PDFInfo
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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
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- 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
- C22F1/043—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 silicon as the next major constituent
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- 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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- 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
- C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
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Abstract
The invention provides an Al-Mg-Si series anti-collision alloy sectional material and a manufacturing process thereof and relates to the field of new materials. The Al-Mg-Si series anti-collision alloy sectional material is prepared from the following alloy element components in percentage by weight: 0.5 percent to 0.7 percent of Si, less than or equal to 0.15 percent of Fe, 0.15 percent to 0.25 percent of Mn, less than or equal to 0.1 percent of Cu, 0.6 percent to 0.75 percent of Mg, 0.1 percent to 0.2 percent of Cr, less than or equal to 0.1 percent of Zn, 0.1 percent to 0.2 percent of V and the balance of Al; the Al-Mg-Si series anti-collision alloy sectional material provided by the invention has relatively high strength and also has good plasticity and toughness, so that the Al-Mg-Si series anti-collision alloy sectional material has a good anti-collision performance and is used for manufacturing a vehicle body of a high-speed train. The manufacturing process of the Al-Mg-Si series anti-collision alloy sectional material comprises the procedures of smelting, refining, casting, homogenizing, extruding and the like; the method is simple and is suitable for industrial production.
Description
Technical field
The present invention relates to a kind of field of new, and more particularly to a kind of Al-Mg-Si systems crashworthiness alloy profile and its making
Technique.
Background technology
Traditional Al-Mg-Si system alloy has moderate strength, and welding performance is excellent, and plasticity is higher, and cold-workability is good, forging
Make performance good, surface non-scale during forge hot, surface quality is good after forging, and allowance is little, and material corrosion resistance is good, stress-free corrosion
The advantages of tearing tendency, the fields such as track traffic, automobile, machine-building, building and decoration are widely used in.
As Chinese high ferro technology is developed rapidly, a kind of crash-resistant aluminum alloy materials are needed, this is because when train is sent out
During raw collision, the anticollision performance of train section bar is related to the property and life security of people：The good section bar system of anticollision performance
When colliding, train only deforms the train made, and can reduce personnel casualty probability, the row of the section bar manufacture of anticollision performance difference
When colliding, train not only deforms car, there is also crackle, or even fracture is disintegrated, meeting high risks row occupant's
Safety.
Crash-resistant aluminum alloy materials do not require nothing more than it and have high intensity, but also need good plasticity and toughness.
It is by increasing Si contents, or to be improved using heat-treating methods to traditional Al-Mg-Si system alloy that general industry is produced
Its strength character, it is desirable to increase its anticollision performance, but can so cause the plasticity and toughness of alloy to reduce, and alloy is in compression
When serious crackle occurs, it is difficult to meet crash-resistant requirement.
Therefore, there is presently no can meet the crash-resistant aluminum alloy materials of above-mentioned requirements.
The content of the invention
It is an object of the invention to provide a kind of Al-Mg-Si systems crashworthiness alloy profile, its intensity is higher, while having good
Plasticity well and toughness, thus with good anticollision performance, for manufacturing high-speed train body.
Another object of the present invention is to a kind of manufacture craft of Al-Mg-Si systems crashworthiness alloy profile is provided, method letter
It is single, it is adapted to industrialized production.
The present invention solves its technical problem and employs the following technical solutions to realize.
A kind of Al-Mg-Si systems crashworthiness alloy profile of present invention proposition, percentage, it is mainly by following alloy
Elemental composition is constituted：
Si：0.5%-0.7%；Fe：≤ 0.15%；Mn：0.15%-0.25%；Cu：≤ 0.1%；Mg：0.6%-
0.75%；Cr：0.1%-0.2%；Zn：≤ 0.1%；V：0.1%-0.2%；Balance of Al.
Further, in present pre-ferred embodiments, the tensile strength of Al-Mg-Si systems crashworthiness alloy profile is 190-
210MPa；Yield strength is 100-120MPa；Elongation percentage is 25%-35%.
A kind of manufacture craft of Al-Mg-Si systems crashworthiness alloy profile, it is comprised the following steps：
Raw material is carried out into melting, refining, liquid aluminium alloy is obtained, sample analysis control the alloying element of liquid aluminium alloy
Composition is：Si：0.5%-0.7%；Fe：≤ 0.15%；Mn：0.15%-0.25%；Cu：≤ 0.1%；Mg：0.6%-
0.75%；Cr：0.1%-0.2%；Zn：≤ 0.1%；V：0.1%-0.2%；Balance of Al；
Using water-cooled semi-continuous casting or chilling casting method, liquid aluminium alloy is cast as into ingot casting；
Ingot casting is carried out into Homogenization Treatments, blank is obtained；
Blank is extruded.
Further, in present pre-ferred embodiments, according to alloy element component choose raw material, raw material include it is required in
Between alloy, electrolysis aluminium ingot and solid reclaim aluminium.
Further, in present pre-ferred embodiments, the temperature of melting is 750-770 DEG C.
Further, in present pre-ferred embodiments, the method for refining is：
Furnace refining is carried out using refining agent is blowed and sprayed in the aluminium liquid that argon gas is formed toward melting, refining agent consumption is 0.12-
0.18kg/t, furnace refining time >=10min；
Standing of skimming 40-60min；
External refining is carried out using online degasification mode, argon flow amount is 4-6L/h, input pressure 5- during external refining
10bar, obtains refining solution；
Refining liquation is filtered using twin-stage ceramic filter.
Further, in present pre-ferred embodiments, the temperature of refining is 720-750 DEG C.
Further, in present pre-ferred embodiments, cooling velocity when water-cooled semi-continuous casting or chilling cast is
50-120℃/s。
Further, in present pre-ferred embodiments, the method for Homogenization Treatments is：500-515 DEG C is heated to, insulation
6-7 hours, then heat to 560-570 DEG C, are incubated 11-12 hours.
The Al-Mg-Si systems crashworthiness alloy profile of the embodiment of the present invention and its beneficial effect of manufacture craft are：It is of the invention real
Applying the alloy element component percentage of the Al-Mg-Si systems crashworthiness alloy profile of example includes：Si：0.5%-0.7%；
Fe：≤ 0.15%；Mn：0.15%-0.25%；Cu：≤ 0.1%；Mg：0.6%-0.75%；Cr：0.1%-0.2%；Zn：≤
0.1%；V：0.1%-0.2%；Balance of Al, the Al-Mg-Si systems crashworthiness alloy profile intensity is higher, while with good
Plasticity and toughness, thus with good anticollision performance, for manufacturing high-speed train body.The Al-Mg-Si systems crashworthiness alloy
The manufacture craft of section bar is：Raw material is carried out into melting, refining, the accurate liquid aluminium alloy of alloy element component is obtained, using water
Cold semi-continuous casting or chilling casting method, by liquid aluminium alloy ingot casting is cast as；Ingot casting is carried out into Homogenization Treatments, base is obtained
Material；Blank is extruded, the method is simple, be adapted to industrialized production.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below will be in the embodiment of the present invention
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, being can pass through the conventional product that commercially available purchase is obtained
Product.
The Al-Mg-Si systems crashworthiness alloy profile and its manufacture craft of the embodiment of the present invention are specifically described below.
The embodiment of the present invention provides a kind of Al-Mg-Si systems crashworthiness alloy profile, percentage, its mainly by with
Lower alloy element component composition：
Si：0.5%-0.7%；Fe：≤ 0.15%；Mn：0.15%-0.25%；Cu：≤ 0.1%；Mg：0.6%-
0.75%；Cr：0.1%-0.2%；Zn：≤ 0.1%；V：0.1%-0.2%；Balance of Al.
Compared with traditional 6008Al-Mg-Si systems alloying component, the alloy element component present invention of the embodiment of the present invention is carried
The lower limit and the upper limit of high Mg, reduces the upper limit of Si, and Fe is controlled below 0.15%, reduces 57% or so, and is greatly reduced
Cu and Zn.The addition that the embodiment of the present invention passes through optimization main alloying element Mg, Si, and control the addition of other trace elements
Amount, realizes thering is good anticollision performance, is mainly reflected in the following aspects：
(1) addition of main alloying element Mg, Si, and Mg/Si ratios are controlled, to improve the toughness of alloy profile；
(2) Mn, Cr element is added in right amount, to improve recrystallization temperature, suppress grain coarsening, improve the tough of alloy profile
Property；
(3) amount of Impurity Fe is reduced, the brittlement phase in alloy profile is reduced, its toughness is improved；
(4) add V element, refined cast structure to improve recrystallization temperature, change ag(e)ing behavio(u)r, improve alloy profile
Obdurability.
The tensile strength of embodiment of the present invention Al-Mg-Si system crashworthiness alloy profile is 190-210MPa；Yield strength is
100-120MPa；Elongation percentage is 25%-35%.
The embodiment of the present invention also provides a kind of manufacture craft of Al-Mg-Si systems crashworthiness alloy profile, and it includes following step
Suddenly：
S1 meltings：Raw material is carried out into melting, refining, liquid aluminium alloy is obtained, sample analysis control the conjunction of liquid aluminium alloy
Gold element composition is by weight percent：Si：0.5%-0.7%；Fe：≤ 0.15%；Mn：0.15%-0.25%；Cu：≤
0.1%；Mg：0.6%-0.75%；Cr：0.1%-0.2%；Zn：≤ 0.1%；V：0.1%-0.2%；Balance of Al.
Choose raw material is carried out according to alloy element component, and raw material includes required intermediate alloy, is electrolysed aluminium ingot and solid
Body reclaims aluminium, wherein, with the presence of Al-Cr intermediate alloys form, V is with the presence of Al-V intermediate alloys form for Cr.In the middle of Al-V
The fusing point of alloy is high, is to ensure its abundant dissolving in the melt, and smelting temperature needs are higher, and the temperature of melting is 750-770
℃；The temperature of refining is 720-750 DEG C.
The concrete grammar of refining is：
S101 furnace refinings：Furnace refining, refining agent are carried out using refining agent is blowed and sprayed in the aluminium liquid that argon gas is formed toward melting
Consumption is 0.12-0.18kg/t, the furnace refining time >=10min；
S102 skims standing：Time of repose is controlled for 40-60min；
S103 external refinings：External refining is carried out using online degasification mode, argon flow amount is 4-6L/h during external refining,
Input pressure 5-10bar, obtains refining solution；
S104 ceramic filters：Refining liquation is filtered using twin-stage ceramic filter, and clicks and enters Ti, B silk, obtain liquid aluminium conjunction
Gold.
S2 casts：Using water-cooled semi-continuous casting or chilling casting method, cooling velocity is 50-120 DEG C/s, by liquid aluminium
Alloy is cast as ingot casting；
S3 is homogenized：Ingot casting is carried out into Homogenization Treatments, it is preferred to use two-step homogenization, obtain blank；
Two-step homogenization process concrete grammar be：500-515 DEG C is heated to, 6-7 hours are incubated, 560- is then heated to
570 DEG C, it is incubated 11-12 hours.
S3 is extruded：Blank is extruded, 500 DEG C of mould heating-up temperature, 450 DEG C of recipient temperature, if temperature is too low, needed
The extruding force wanted is too big, if temperature is too high, it is difficult to ensure dimensional accuracy.The concrete grammar of extruding is：By blank holding temperature point
Area：510 DEG C, 500 DEG C, 490 DEG C, using gradient-heated, to ensure that constant temperature is extruded, because material shaping difficulty is very big, therefore squeeze
Pressure speed cannot quickly, and extrusion speed is 2-3m/min, and extrusion ratio is 21.4, obtains Al-Mg-Si systems crashworthiness alloy profile.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of Al-Mg-Si systems crashworthiness alloy profile, by mass percentage, its alloy element component
For：Si：0.5%；Fe：0.1%；Mn：0.25%；Cu：0.05%；Mg：0.6%；Cr：0.2%；Zn：0.05%；V：0.2%；
Balance of Al.
The Al-Mg-Si systems crashworthiness alloy profile is obtained using following production method：
The intermediate alloys such as Al-Cr intermediate alloys, Al-V intermediate alloys, and electrolysis are chosen according to above-mentioned alloy element component
Aluminium ingot, solid reclaim aluminium as raw material, and in 750-760 DEG C aluminium liquid is smelted into.
Under conditions of 720-725 DEG C, first refining agent is blowed and sprayed toward aluminium liquid using argon gas carries out furnace refining, and refining agent is used
Measure as 0.18kg/t, furnace refining time 12min；Stand 40min；Again external refining is carried out using online degasification mode, outside stove
Argon flow amount is 4L/h, input pressure 8bar during refining, obtains refining solution；Refining is filtered using twin-stage ceramic filter molten
Liquid, and Ti, B silk is clicked and entered, obtain liquid aluminium alloy.
Using water-cooled semi-continuous casting or chilling casting method, cooling velocity is 60 DEG C/s, and liquid aluminium alloy is cast as
Ingot casting.
During homogenization, 510 DEG C are heated to, are incubated 6 hours, then heat to 565 DEG C, be incubated 12 hours, obtain blank.
Blank is extruded, the temperature of extruding is 510 DEG C, and blank adopts gradient-heated, and extrusion speed is 3m/min, is squeezed
Pressure ratio is 21.4, obtains Al-Mg-Si systems crashworthiness alloy profile.
Embodiment 2
The present embodiment provides a kind of Al-Mg-Si systems crashworthiness alloy profile, by mass percentage, its alloy element component
For：Si：0.6%；Fe：0.05%；Mn：0.2%；Cu：0.05%；Mg：0.7%；Cr：0.15%；Zn：0.05%；V：
0.15%；Balance of Al.
The Al-Mg-Si systems crashworthiness alloy profile is obtained using following production method：
The intermediate alloys such as Al-Cr intermediate alloys, Al-V intermediate alloys, and electrolysis are chosen according to above-mentioned alloy element component
Aluminium ingot, solid reclaim aluminium as raw material, and in 760-770 DEG C aluminium liquid is smelted into.
Under conditions of 730-735 DEG C, first refining agent is blowed and sprayed toward aluminium liquid using argon gas carries out furnace refining, and refining agent is used
Measure as 0.16kg/t, furnace refining time 15min；Stand 50min；Again external refining is carried out using online degasification mode, outside stove
Argon flow amount is 5L/h, input pressure 8bar during refining, obtains refining solution；Refining is filtered using twin-stage ceramic filter molten
Liquid, and Ti, B silk is clicked and entered, obtain liquid aluminium alloy.
Using water-cooled semi-continuous casting or chilling casting method, cooling velocity is 100 DEG C/s, and liquid aluminium alloy is cast as
Ingot casting.
During homogenization, 510 DEG C are heated to, are incubated 6 hours, then heat to 565 DEG C, be incubated 12 hours, obtain blank.
Blank is extruded, the temperature of extruding is 510 DEG C, and blank adopts gradient-heated, and extrusion speed is 3m/min, is squeezed
Pressure ratio is 21.4, obtains Al-Mg-Si systems crashworthiness alloy profile.
Embodiment 3
The present embodiment provides a kind of Al-Mg-Si systems crashworthiness alloy profile, by mass percentage, its alloy element component
For：Si：0.7%；Fe：0.05%；Mn：0.15%；Cu：0.05%；Mg：0.75%；Cr：0.1%；Zn：0.05%；V：
0.1%；Balance of Al.
The Al-Mg-Si systems crashworthiness alloy profile is obtained using following production method：
The intermediate alloys such as Al-Cr intermediate alloys, Al-V intermediate alloys, and electrolysis are chosen according to above-mentioned alloy element component
Aluminium ingot, solid reclaim aluminium as raw material, and in 750-770 DEG C aluminium liquid is smelted into.
Under conditions of 745-750 DEG C, first refining agent is blowed and sprayed toward aluminium liquid using argon gas carries out furnace refining, and refining agent is used
Measure as 0.18kg/t, furnace refining time 16min；Stand 60min；Again external refining is carried out using online degasification mode, outside stove
Argon flow amount is 6L/h, input pressure 10bar during refining, obtains refining solution；Refining is filtered using twin-stage ceramic filter molten
Liquid, and Ti, B silk is clicked and entered, obtain liquid aluminium alloy.
Using water-cooled semi-continuous casting or chilling casting method, cooling velocity is 110-115 DEG C/s, and liquid aluminium alloy is cast
Cause ingot casting.
During homogenization, 510 DEG C are heated to, are incubated 6 hours, then heat to 565 DEG C, be incubated 12 hours, obtain blank.
Blank is extruded, the temperature of extruding is 510 DEG C, and blank adopts gradient-heated, and extrusion speed is 3m/min, is squeezed
Pressure ratio is 21.4, obtains Al-Mg-Si systems crashworthiness alloy profile.
Comparative example 1
This comparative example provides a kind of Al-Mg-Si system alloy section bar, and by mass percentage, its alloy element component is：
Si：0.6%；Fe：0.30%；Mn：0.2%；Cu：0.1%；Mg：0.48%；Cr：0.1%；Zn：0.15%；V：0.05%；It is remaining
Measure as Al.The manufacture craft of the Al-Mg-Si system alloy section bar is identical with the manufacture craft in embodiment 2.
Comparative example 2
This comparative example provides a kind of Al-Mg-Si system alloy section bar, and by mass percentage, its alloy element component is：
Si：0.75%；Fe：0.30%；Mn：0.28%；Cu：0.18%；Mg：0.58%；Cr：0.2%；Zn：0.15%；V：
0.15%；Balance of Al.The manufacture craft of the Al-Mg-Si system alloy section bar is identical with the manufacture craft in embodiment 1.
Properties of product are detected：
First, mechanics properties testing
The Al-Mg-Si systems crashworthiness alloy profile in embodiment 1-3, and the Al-Mg-Si in comparative example 1-2 are measured respectively
It is the mechanical property of alloy profile, it is as a result as shown in the table.
The mechanical property of each alloy profile of table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | |
| Tensile strength/MPa | 190 | 200 | 210 | 210 | 190 |
| Yield strength/MPa | 100 | 110 | 120 | 120 | 100 |
| Elongation percentage/% | 31 | 32 | 35 | 23 | 21 |
As can be seen from the above table, according to the embodiment of the present invention manufacture craft obtained in Al-Mg-Si systems crashworthiness alloy profile
Tensile strength be 190-210MPa；Yield strength is 100-120MPa；Elongation percentage is 30% or so；And according to common process system
The tensile strength of the Al-Mg-Si system alloy section bar for obtaining is 190-210MPa；Yield strength is 100-120MPa；Elongation percentage is
20% or so.
2nd, static compression test
With the material mechanical performance experimental systems of INSTRON 1346 the Al-Mg-Si systems crashworthiness in embodiment 1-3 is closed respectively
Metal type material, and the traditional Al-Mg-Si system alloy section bar in comparative example 1-2 carries out static compression test, loading speed is 1mm/
S, experimental situation is room temperature.
Result of the test is：Al-Mg-Si systems crashworthiness alloy profile in embodiment 1-3 is in the edge compression side after static compress
To producing longitudinal folding deformation, without obvious crackle, and the Al-Mg-Si system alloy section bar in comparative example 1-2 is after static compress,
Not only longitudinal folding deformation is produced along compression direction, and have serious crackle.
3rd, metallographic structure is observed
The Al-Mg-Si systems crashworthiness alloy profile watched respectively in embodiment 1-3 with metallographic microscope, and comparative example 1-2
In sample of traditional Al-Mg-Si system alloy section bar after static compression test.
Observation finds：Sample tissue of the Al-Mg-Si systems crashworthiness alloy profile in embodiment 1-3 after static compress be in
Now significantly extrude, and sample tissue of the Al-Mg-Si system alloy section bar in comparative example 1-2 after static compress occurs substantially
Recrystallization, coarse grains.
In sum, the intensity of the Al-Mg-Si systems crashworthiness alloy profile of the embodiment of the present invention is higher, while having good
Plasticity and toughness, thus with good anticollision performance, for manufacturing high-speed train body.The Al-Mg-Si systems crashworthiness is closed
The manufacture craft of metal type material, method is simple, is adapted to industrialized production.
Embodiments described above is a part of embodiment of the invention, rather than the embodiment of whole.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected enforcement of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of Al-Mg-Si systems crashworthiness alloy profile, it is characterised in that percentage, it is mainly by following alloy unit
Element is into being grouped into：
Si：0.5%-0.7%；Fe：≤ 0.15%；Mn：0.15%-0.25%；Cu：≤ 0.1%；Mg：0.6%-0.75%；
Cr：0.1%-0.2%；Zn：≤ 0.1%；V：0.1%-0.2%；Balance of Al.
2. Al-Mg-Si systems crashworthiness alloy profile according to claim 1, it is characterised in that Al-Mg-Si systems crashworthiness
The tensile strength of alloy profile is 190-210MPa；Yield strength is 100-120MPa；Elongation percentage is 25%-35%.
3. a kind of manufacture craft of Al-Mg-Si systems crashworthiness alloy profile as claimed in claim 1, it is characterised in that it includes
Following steps：
Raw material is carried out into melting, refining, liquid aluminium alloy is obtained, sample analysis control the alloying element of the liquid aluminium alloy
Composition is：Si：0.5%-0.7%；Fe：≤ 0.15%；Mn：0.15%-0.25%；Cu：≤ 0.1%；Mg：0.6%-
0.75%；Cr：0.1%-0.2%；Zn：≤ 0.1%；V：0.1%-0.2%；Balance of Al；
Using water-cooled semi-continuous casting or chilling casting method, the liquid aluminium alloy is cast as into ingot casting；
The ingot casting is carried out into Homogenization Treatments, blank is obtained；
The blank is extruded.
4. the manufacture craft of Al-Mg-Si systems crashworthiness alloy profile according to claim 3, it is characterised in that according to described
Alloy element component chooses the raw material, and the raw material includes that required intermediate alloy, electrolysis aluminium ingot and solid reclaim aluminium.
5. the manufacture craft of Al-Mg-Si systems crashworthiness alloy profile according to claim 3, it is characterised in that the melting
Temperature be 750-770 DEG C.
6. the manufacture craft of Al-Mg-Si systems crashworthiness alloy profile according to claim 3, it is characterised in that the refining
Method be：
Furnace refining is carried out using refining agent is blowed and sprayed in the aluminium liquid that argon gas is formed toward melting, the refining agent consumption is 0.12-
0.18kg/t, the furnace refining time >=10min；
Standing of skimming 40-60min；
External refining is carried out using online degasification mode, during external refining argon flow amount be 4-6L/h, input pressure 5-10bar,
Obtain refining solution；
The refining liquation is filtered using twin-stage ceramic filter.
7. the manufacture craft of Al-Mg-Si systems crashworthiness alloy profile according to claim 3, it is characterised in that the refining
Temperature be 720-750 DEG C.
8. the manufacture craft of Al-Mg-Si systems crashworthiness alloy profile according to claim 3, it is characterised in that the water-cooled
Cooling velocity when semi-continuous casting or chilling cast is 50-120 DEG C/s.
9. the manufacture craft of Al-Mg-Si systems crashworthiness alloy profile according to claim 3, it is characterised in that described uniform
Changing the method for processing is：500-515 DEG C is heated to, 6-7 hours are incubated, 560-570 DEG C is then heated to, 11-12 hours are incubated.
10. the manufacture craft of Al-Mg-Si systems crashworthiness alloy profile according to claim 3, it is characterised in that described to squeeze
The method of pressure is：The blank is adopted into gradient-heated, extrusion speed is 2-3m/min, and extrusion ratio is 21.4.
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| CN112626385A (en) * | 2020-11-04 | 2021-04-09 | 佛山科学技术学院 | High-plasticity quick-aging-response aluminum alloy and preparation method and application thereof |
| CN113564433A (en) * | 2021-08-10 | 2021-10-29 | 江苏亚太航空科技有限公司 | Corrosion-resistant 6082 aluminum alloy material and casting process thereof |
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| CN113564433A (en) * | 2021-08-10 | 2021-10-29 | 江苏亚太航空科技有限公司 | Corrosion-resistant 6082 aluminum alloy material and casting process thereof |
| CN113564433B (en) * | 2021-08-10 | 2022-06-03 | 江苏亚太航空科技有限公司 | Corrosion-resistant 6082 aluminum alloy material and casting process thereof |
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