CN105506413A - 6-series aluminum alloy for vehicle structural part - Google Patents
6-series aluminum alloy for vehicle structural part Download PDFInfo
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- CN105506413A CN105506413A CN201510958201.7A CN201510958201A CN105506413A CN 105506413 A CN105506413 A CN 105506413A CN 201510958201 A CN201510958201 A CN 201510958201A CN 105506413 A CN105506413 A CN 105506413A
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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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- 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 provides a 6-series aluminum alloy for a vehicle structural part. The 6-series aluminum alloy comprises the following components: 0.4-0.8 wt% of Si, A wt% of Fe, A not more than 0.3 and more than 0, 0.15-0.25 wt% of Cu, D wt% of Mn, D not more than 0.15 and more than 0, 0.8-1.2 wt% of Mg, 0.04-0.35 wt% of Cr, E wt% of Zn, E not more than 0.1 and more than 0, G wt% of Ti, G not more than 0.15 and more than 0, 0-0.01 wt% of Pb, 0-0.002 wt% of Na, 0-0.005 wt% of Ga, and the balance of Al. The 6-series aluminum alloy for the vehicle structural part reasonably introduces such elements as Si, Fe, Cu, Mn, Mg, Cr, Zn and Ti, reasonably controls the contents of all the elements, optimizes the components, and is better in mechanical performance.
Description
Technical field
The present invention relates to technical field of alloy, particularly relate to a kind of automobile structure 6 line aluminium alloys.
Background technology
Aluminium alloy take aluminium as the alloy composition of matrix element, and the alloying element mainly comprised has copper, silicon, magnesium, zinc, manganese, also comprises the alloying elements such as nickel, iron, titanium, chromium, lithium.The density of aluminium alloy is low, but strength ratio is higher, close to or exceed high-quality steel, plasticity is good, various section bar can be processed into, have excellent electroconductibility, thermal conductivity and corrosion stability, be a most widely used class nonferrous materials in Aeronautics and Astronautics, automobile, machinofacture, boats and ships and chemical industry, its usage quantity is only second to steel.
Application number be 201110121915.4 Chinese patent disclose a kind of aluminium alloy, silicon, magnesium, copper, chromium, manganese and aluminium are put into smelting furnace and carry out melting, ensure that smelting temperature is no more than 760 DEG C; Stir until load melting about 90% time, want during stirring steadily, to forbid surface scum to be involved in molten metal, every stove does 2 times and stirs with upper furnace body in melting process, in order to fluxing, shortening fusing time, preventing the local area burning of aluminium water; Sampled immediately after stirring by melt, carry out on-the-spot sample analysis, according to analytical results determination feed supplement amount, feeding temperature must not lower than 730 DEG C; Refining is carried out with stove, according to the result of sampling analysis, the magnitude of recruitment of Calculating material, carry out second time sampling analysis, leave standstill 10 ~ 30 minutes, casting, presses the machine-shaping of desired shape specification by the aluminium alloy plate after shaping, the composition of described aluminium alloy is the Mn of Cr, 0.25wt% of Cu, 0.15wt% of Mg, 0.16wt% of Si, 0.75wt% of 0.45wt%, and surplus is Al.
This aluminium alloy that prior art provides has good erosion resistance and weldability, but the mechanical property of this aluminium alloy is poor, limits its widespread use.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of automobile structure 6 line aluminium alloys, automobile structure provided by the invention 6 line aluminium alloys have good mechanical property.
The invention provides a kind of automobile structure 6 line aluminium alloys, composition is:
The Si of 0.4wt% ~ 0.8wt%;
The Fe of Awt%, 0 < A≤0.3;
The Cu of 0.15wt% ~ 0.25wt%;
The Mn of Dwt%, 0 < D≤0.15;
The Mg of 0.8wt% ~ 1.2wt%;
The Cr of 0.04wt% ~ 0.35wt%;
The Zn of Ewt%, 0 < E≤0.1;
The Ti of Gwt%, 0 < G≤0.15;
The Pb of 0 ~ 0.01wt%;
The Na of 0 ~ 0.002wt%;
The Ga of 0 ~ 0.005Ga;
Surplus is Al.
Preferably, the content of described Si in aluminium alloy is 0.4wt% ~ 0.8wt%.
Preferably, the content of described Fe in aluminium alloy is 0.05wt% ~ 0.25wt%.
Preferably, the content of described Cu in aluminium alloy is 0.18wt% ~ 0.22wt%.
Preferably, the content of described Mn in aluminium alloy is 0.01wt% ~ 0.15wt%.
Preferably, the content of described Mg in aluminium alloy is 0.9wt% ~ 1.1wt%.
Preferably, the content of described Cr in aluminium alloy is 0.08wt% ~ 0.3wt%.
Preferably, the content of described Zn in aluminium alloy is 0.02wt% ~ 0.08wt%.
Preferably, the content of described Ti in aluminium alloy is 0.02wt% ~ 0.12wt%.
Preferably, the grain-size of described aluminium alloy is L μm, 0 < L≤50.
Automobile structure provided by the invention 6 line aluminium alloys, by introducing the elements such as Si, Fe, Cu, Mn, Mg, Cr, Zn and Ti, and reasonably control the mass content of each element, the composition of automobile structure with 6 line aluminium alloys is optimized, makes the aluminium alloy obtained have good mechanical property.Experimental result shows, the automobile structure provided by the invention Rp of 6 line aluminium alloys
0.2for 110N/mm
2~ 150N/mm
2, Rm>=205N/mm
2, Ag > 14%, A
50> 18%, F (10%) > 0.59, n (5% ~ Ag-1%) > 0.17.
In addition, make the performance of automobile structure provided by the invention 6 line aluminium alloys comparatively stable by the composition of optimization design aluminium alloy.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of automobile structure 6 line aluminium alloys, composition is:
The Si of 0.4wt% ~ 0.8wt%;
The Fe of Awt%, 0 < A≤0.3;
The Cu of 0.15wt% ~ 0.25wt%;
The Mn of Dwt%, 0 < D≤0.15;
The Mg of 0.8wt% ~ 1.2wt%;
The Cr of 0.04wt% ~ 0.35wt%;
The Zn of Ewt%, 0 < E≤0.1;
The Ti of Gwt%, 0 < G≤0.15;
The Pb of 0 ~ 0.01wt%;
The Na of 0 ~ 0.002wt%;
The Ga of 0 ~ 0.005Ga;
Surplus is Al.
The Si of automobile structure provided by the invention containing 0.4wt% ~ 0.8wt% in 6 line aluminium alloys.In an embodiment of the present invention, the content of Si in described aluminium alloy is 0.5wt% ~ 0.7wt%; In other examples, the content of Si in described aluminium alloy is 0.55wt% ~ 0.65wt%.The Fe of automobile structure provided by the invention containing Awt% in 6 line aluminium alloys, 0 < A≤0.3.In an embodiment of the present invention, the content of Fe in described aluminium alloy is 0.05wt% ~ 0.25wt%; In other examples, the content of Fe in described aluminium alloy is 0.1wt% ~ 0.2wt%.The Cu of automobile structure provided by the invention containing 0.15wt% ~ 0.25wt% in 6 line aluminium alloys.In an embodiment of the present invention, the content of Cu in described aluminium alloy is 0.18wt% ~ 0.22wt%; In other examples, the content of Cu in described aluminium alloy is 0.2wt%.The Mn of automobile structure provided by the invention containing Dwt% in 6 line aluminium alloys.In an embodiment of the present invention, the content of Mn in described aluminium alloy is 0.01wt% ~ 0.15wt%; In other examples, the content of Mn in described aluminium alloy is 0.03wt% ~ 0.12wt%; In a further embodiment, the content of Mn in described aluminium alloy is 0.06wt% ~ 0.08wt%.
The Mg of automobile structure provided by the invention containing 0.8wt% ~ 1.2wt% in 6 line aluminium alloys.In an embodiment of the present invention, the content of Mg in described aluminium alloy is 0.9wt% ~ 1.1wt%; In other examples, the content of Mg in described aluminium alloy is 1wt%.The Cr of automobile structure provided by the invention containing 0.04wt% ~ 0.35wt% in 6 line aluminium alloys.In an embodiment of the present invention, the content of Cr in described aluminium alloy is 0.08wt% ~ 0.3wt%; In other examples, the content of Cr in described aluminium alloy is 0.15wt% ~ 0.25wt%; In a further embodiment, the content of Cr in described aluminium alloy is 0.18wt% ~ 0.22wt%.The Zn of automobile structure provided by the invention containing Ewt% in 6 line aluminium alloys, 0 < E≤0.1.In an embodiment of the present invention, the content of Zn in described aluminium alloy is 0.02wt% ~ 0.08wt%; In other examples, the content of Zn in described aluminium alloy is 0.04wt% ~ 0.06wt%.The Ti of automobile structure provided by the invention containing Gwt% in 6 line aluminium alloys, 0 < G≤0.15.In an embodiment of the present invention, the content of Ti in described aluminium alloy is 0.02wt% ~ 0.12wt%; In other examples, the content of Ti in described aluminium alloy is 0.04wt% ~ 0.1wt%; In a further embodiment, the content of Ti in described aluminium alloy is 0.06wt% ~ 0.08wt%.
The Pb of automobile structure provided by the invention containing 0 ~ 0.01wt% in 6 line aluminium alloys.In an embodiment of the present invention, the content of Pb in described aluminium alloy is 0.002wt% ~ 0.008wt%; In other examples, the content of Pb in described aluminium alloy is 0.004wt% ~ 0.006wt%.The Na of automobile structure provided by the invention containing 0 ~ 0.002wt% in 6 line aluminium alloys.In an embodiment of the present invention, the content of Na in described aluminium alloy is 0.0005wt% ~ 0.0015wt%; In other examples, the content of Na in described aluminium alloy is 0.0008wt% ~ 0.0012wt%.The Ga of automobile structure provided by the invention containing 0 ~ 0.005wt% in 6 line aluminium alloys.In an embodiment of the present invention, the content of Ga in described aluminium alloy is 0.001wt% ~ 0.004wt%; In other examples, the content of Ga in described aluminium alloy is 0.002wt% ~ 0.003wt%.
Automobile structure provided by the invention is the difference of 100wt% and above-mentioned Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti, Pb, Na and Ga element mass content summation with the content of Al in 6 line aluminium alloys.In an embodiment of the present invention, described automobile structure is the difference of 100wt% and above-mentioned Si, Fe, Cu, Mn, Mg, Cr, Zn and Ti element mass content summation with the content of Al in 6 line aluminium alloys.In an embodiment of the present invention, the content of impurities≤0.15wt% of described automobile structure in 6 line aluminium alloys, described impurity is the metal except Si, Fe, Cu, Mn, Mg, Cr, Zn, Ti, Pb, Na, Ga and Al.In an embodiment of the present invention, the described automobile structure content≤0.05wt% of the single impurity in 6 line aluminium alloys.
In an embodiment of the present invention, described automobile structure is L μm by the grain-size of 6 line aluminium alloys, 0 < L≤50; In other examples, described automobile structure is 10 μm ~ 40 μm by the grain-size of 6 line aluminium alloys; In a further embodiment, described automobile structure is 20 μm ~ 30 μm by the grain-size of 6 line aluminium alloys.
Automobile structure provided by the invention 6 line aluminium alloys, by introducing the elements such as Si, Fe, Cu, Mn, Mg, Cr, Zn and Ti, and reasonably control the mass content of each element, the composition of aluminium alloy is optimized, makes the automobile structure obtained have good mechanical property with 6 line aluminium alloys.In addition, make the performance of automobile structure provided by the invention 6 line aluminium alloys comparatively stable by the composition of optimization design aluminium alloy.
Aluminium alloy provided by the invention is particularly useful for being applied on automobile structure.
In an embodiment of the present invention, the described automobile structure preparation method of 6 line aluminium alloys, comprising:
By Si source, Fe source, Cu source, Mn source, Mg source, Cr source, Zn source, Ti source, Pb source, Na source, Ga source and Al source according to target composition carry out founding after proportioning, obtain automobile structure 6 line aluminium alloys, described target component is: the Si of 0.4wt% ~ 0.8wt%; The Fe of Awt%, 0 < A≤0.3; The Cu of 0.15wt% ~ 0.25wt%; The Mn of Dwt%, 0 < D≤0.15; The Mg of 0.8wt% ~ 1.2wt%; The Cr of 0.04wt% ~ 0.35wt%; The Zn of Ewt%, 0 < E≤0.1; The Ti of Gwt%, 0 < G≤0.15; The Pb of 0 ~ 0.01wt%; The Na of 0 ~ 0.002wt%; The Ga of 0 ~ 0.005Ga; Surplus is Al.
In an embodiment of the present invention, by Si source, Fe source, Cu source, Mn source, Mg source, Cr source, Zn source, Ti source, Pb source, Na source, Ga source and Al source according to target composition carry out founding after proportioning, obtain automobile structure 6 line aluminium alloys.The kind of the present invention to described Si source, Fe source, Cu source, Mn source, Mg source, Cr source, Zn source, Ti source, Pb source, Na source, Ga source and Al source does not have special restriction, adopts Si simple substance well known to those skilled in the art, Fe simple substance, Cu simple substance, Mn simple substance, Mg simple substance, Cr simple substance, Zn simple substance, Ti simple substance, Pb simple substance, Na simple substance, Ga simple substance and Al simple substance.The source of the present invention to described Si source, Fe source, Cu source, Mn source, Mg source, Cr source, Zn source, Ti source, Pb source, Na source, Ga source and Al source does not have special restriction, can be bought by market and obtain, as commercially available Pure Silicon Metal, pure iron, fine copper, pure manganese, pure magnesium, pure chromium, pure zinc, pure titanium, pure lead, pure sodium and fine aluminium can be adopted.In the present invention, automobile structure is with when containing Pb, Na, Ga in 6 line aluminium alloys, Pb source, Na source or Ga source can be added in preparation process, also can utilize in above-mentioned Si source, Fe source, Cu source, Mn source, Mg source, Cr source, Zn source, Ti source and Al source with impurity element or preparation process in impurity element Pb, Na or Ga of introducing make the automobile structure for preparing with in 6 line aluminium alloys containing Pb, Na, Ga.
In an embodiment of the present invention, the temperature of described founding is 800 DEG C ~ 1100 DEG C; In other examples, the temperature of described founding is 900 DEG C ~ 1000 DEG C; In a further embodiment, the temperature of described founding is 930 DEG C ~ 970 DEG C.In an embodiment of the present invention, the time of described founding is 20 minutes ~ 60 minutes; In other examples, the time of described founding is 30 minutes ~ 50 minutes; In a further embodiment, the time of described founding is 35 minutes ~ 45 minutes.
In an embodiment of the present invention, after described founding completes, the ingot casting obtained can be carried out successively hot rolling and cold rolling, improve the mechanical property of automobile structure 6 line aluminium alloys prepared further.In an embodiment of the present invention, the temperature of described hot rolling is 200 DEG C ~ 300 DEG C; In other examples, the temperature of described hot rolling is 220 DEG C ~ 280 DEG C; In a further embodiment, the temperature of described hot rolling is 240 DEG C ~ 260 DEG C.In an embodiment of the present invention, the rolling thickness of described hot rolling is 5mm ~ 9mm; In other examples, the rolling thickness of described hot rolling is 6mm ~ 8mm; In a further embodiment, the thickness of described hot rolling is 7.5mm ~ 8.5mm.In an embodiment of the present invention, temperature and rolling thickness by controlling hot rolling can increase follow-up cold rolling deflection.
In an embodiment of the present invention, before carrying out hot rolling, the ingot casting obtained carry out milling can face, make ingot casting form plane to carry out better hot rolling.The method of the present invention to described milling face does not have special restriction, adopts method well known to those skilled in the art, and employing end mill, all millings or the mode that both have concurrently carry out milling faces.
In an embodiment of the present invention, after described hot rolling is complete, can the product after hot rolling be carried out cold rolling.In an embodiment of the present invention, described cold rolling temperature is 20 DEG C ~ 30 DEG C.In an embodiment of the present invention, described cold rolling deflection is 50% ~ 70%; In other examples, described cold rolling deflection is 55% ~ 65%; In a further embodiment, described cold rolling deflection is 58% ~ 62%.
In an embodiment of the present invention, by carrying out hot rolling and cold rolling to the aluminium alloy cast ingot after founding, the automobile structure prepared can be made to have suitable grain fineness number with 6 line aluminium alloys, thus improve the performance of aluminium alloy further.
In an embodiment of the present invention, described cold rolling complete after, the cold-rolled products obtained are carried out solution treatment, improve further the mechanical property of automobile structure 6 line aluminium alloys and strengthen its corrosion resistance nature.In an embodiment of the present invention, the temperature of described solution treatment is 500 DEG C ~ 600 DEG C; In other examples, the time of described solution treatment is 520 DEG C ~ 580 DEG C; In a further embodiment, the time of described solution treatment is 540 DEG C ~ 560 DEG C.In an embodiment of the present invention, the time of described solution treatment is 1 hour ~ 3 hours; In other examples, the time of described solution treatment is 1.5 hours ~ 2.5 hours; In a further embodiment, the time of described solution treatment is 2 hours.In an embodiment of the present invention, the type of cooling in described solution treatment process is water-cooled.
In an embodiment of the present invention, the aluminium alloy after founding is carried out hot rolling, cold rolling and solution treatment successively, by the optimization to preparation process of aluminium alloy, make the automobile structure prepared have better properties with 6 line aluminium alloys.
In an embodiment of the present invention, after described solution treatment terminates, the product after the solution treatment obtained is cut out, obtain automobile structure 6 line aluminium alloys of desired shape.
According to the standard of GB/T3246-2002 " distortion Al and Alalloy goods histological test method ", test the grain-size of automobile structure provided by the invention with 6 line aluminium alloys, detected result is, the automobile structure provided by the invention grain-size < 50 μm of 6 line aluminium alloys.
According to the standard of GB/T228-2010 " metal material stretching test ", test the plastic elongation intensity (Rp of automobile structure provided by the invention 6 line aluminium alloys
0.2), tensile strength (Rm), uniform elongation (Ag) and breaking elongation (A50), detected result is, automobile structure provided by the invention is 110N/mm by the plastic elongation intensity of 6 line aluminium alloys
2~ 150N/mm
2, tensile strength>=205N/mm
2, uniform elongation > 14%, breaking elongation > 18%.
According to the standard of GB/T5027-2007 " mensuration of metal sheet and strip plastic strain ratio (r value) ", test the plastic strain ratio (F (10%)) of automobile structure provided by the invention 6 line aluminium alloys, detected result is, the automobile structure provided by the invention plastic strain ratio > 0.59 of 6 line aluminium alloys.
According to the standard of GB/T5028-2008 " mensuration of metal sheet and strip tension strain hardenability value (n value) ", test the tension strain hardenability value (n (5% ~ Ag-1%)) of automobile structure provided by the invention 6 line aluminium alloys, detected result is, the automobile structure provided by the invention tension strain hardenability value > 0.17 of 6 line aluminium alloys.
Following examples of the present invention are raw materials used is commercial goods.
Embodiment 1
Pure Silicon Metal, pure iron, fine copper, pure manganese, pure magnesium, pure chromium, pure zinc, pure titanium, pure lead, pure sodium, pure gallium and fine aluminium are carried out at 900 DEG C the founding of 40 minutes, obtain ingot casting;
At 240 DEG C, carry out hot rolling after the ingot casting obtained carry out milling face, the rolling thickness in described course of hot rolling is 7mm;
At room temperature carried out by product after hot rolling cold rolling, the deflection in described cold-rolled process is 60%;
Product after cold rolling is carried out at 530 DEG C the solution treatment of 2 hours, the type of cooling in described solution treatment process is water-cooled;
Product after solution treatment is cut out, obtains automobile structure 6 line aluminium alloys.
Detect the composition of automobile structure 6 line aluminium alloys that the embodiment of the present invention 1 prepares, detected result is as shown in table 1, and table 1 is the composition of automobile structure 6 line aluminium alloys that the embodiment of the present invention 1 prepares.
The automobile structure that table 1 embodiment of the present invention 1 the prepares composition of 6 line aluminium alloys
According to the method described in technique scheme, the mechanical property of automobile structure 6 line aluminium alloys that the test embodiment of the present invention 1 prepares and grain-size, test result is as shown in table 2, and table 2 is mechanical property and the grain-size of automobile structure 6 line aluminium alloys that the embodiment of the present invention 1 prepares.
The automobile structure that table 2 embodiment of the present invention 1 the prepares mechanical property of 6 line aluminium alloys and grain-size
Embodiment 2
Pure Silicon Metal, pure iron, fine copper, pure manganese, pure magnesium, pure chromium, pure zinc, pure titanium, pure lead, pure sodium, pure gallium and fine aluminium are carried out at 800 DEG C the founding of 60 minutes, obtain ingot casting;
At 200 DEG C, carry out hot rolling after the ingot casting obtained carry out milling face, the rolling thickness in described course of hot rolling is 9mm;
At room temperature carried out by product after hot rolling cold rolling, the deflection in described cold-rolled process is 50%;
Product after cold rolling is carried out at 500 DEG C the solution treatment of 3 hours, the type of cooling in described solution treatment process is water-cooled;
Product after solution treatment is cut out, obtains automobile structure 6 line aluminium alloys.
Detect the composition of automobile structure 6 line aluminium alloys that the embodiment of the present invention 2 prepares, detected result is as shown in table 3, and table 3 is the composition of automobile structure 6 line aluminium alloys that the embodiment of the present invention 2 prepares.
The automobile structure that table 3 embodiment of the present invention 2 the prepares composition of 6 line aluminium alloys
According to the method described in technique scheme, the mechanical property of automobile structure 6 line aluminium alloys that the test embodiment of the present invention 2 prepares and grain-size, test result is as shown in table 4, and table 4 is mechanical property and the grain-size of automobile structure 6 line aluminium alloys that the embodiment of the present invention 2 prepares.
The automobile structure that table 4 embodiment of the present invention 2 the prepares mechanical property of 6 line aluminium alloys and grain-size
Embodiment 3
Pure Silicon Metal, pure iron, fine copper, pure manganese, pure magnesium, pure chromium, pure zinc, pure titanium, pure lead, pure sodium, pure gallium and fine aluminium are carried out at 1100 DEG C the founding of 20 minutes, obtain ingot casting;
At 300 DEG C, carry out hot rolling after the ingot casting obtained carry out milling face, the rolling thickness in described course of hot rolling is 5mm;
At room temperature carried out by product after hot rolling cold rolling, the deflection in described cold-rolled process is 70%;
Product after cold rolling is carried out at 600 DEG C the solution treatment of 1 hour, the type of cooling in described solution treatment process is water-cooled;
Product after solution treatment is cut out, obtains automobile structure 6 line aluminium alloys.
Detect the composition of automobile structure 6 line aluminium alloys that the embodiment of the present invention 3 prepares, detected result is as shown in table 5, and table 5 is the composition of automobile structure 6 line aluminium alloys that the embodiment of the present invention 3 prepares.
The automobile structure that table 5 embodiment of the present invention 3 the prepares composition of 6 line aluminium alloys
According to the method described in technique scheme, the mechanical property of automobile structure 6 line aluminium alloys that the test embodiment of the present invention 3 prepares and grain-size, test result is as shown in table 6, and table 6 is mechanical property and the grain-size of automobile structure 6 line aluminium alloys that the embodiment of the present invention 3 prepares.
The automobile structure that table 6 embodiment of the present invention 3 the prepares mechanical property of 6 line aluminium alloys and grain-size
As seen from the above embodiment, the invention provides a kind of automobile structure 6 line aluminium alloys, composition is: the Si of 0.4wt% ~ 0.8wt%; The Fe of Awt%, 0 < A≤0.3; The Cu of 0.15wt% ~ 0.25wt%; The Mn of Dwt%, 0 < D≤0.15; The Mg of 0.8wt% ~ 1.2wt%; The Cr of 0.04wt% ~ 0.35wt%; The Zn of Ewt%, 0 < E≤0.1; The Ti of Gwt%, 0 < G≤0.15; The Pb of 0 ~ 0.01wt%; The Na of 0 ~ 0.002wt%; The Ga of 0 ~ 0.005Ga; Surplus is Al.Automobile structure provided by the invention 6 line aluminium alloys, by introducing the elements such as Si, Fe, Cu, Mn, Mg, Cr, Zn and Ti, the content of each element of rational control, is optimized al alloy component, makes the automobile structure obtained have good mechanical property with 6 line aluminium alloys.
Claims (10)
1. automobile structure 6 line aluminium alloys, composition is:
The Si of 0.4wt% ~ 0.8wt%;
The Fe of Awt%, 0 < A≤0.3;
The Cu of 0.15wt% ~ 0.25wt%;
The Mn of Dwt%, 0 < D≤0.15;
The Mg of 0.8wt% ~ 1.2wt%;
The Cr of 0.04wt% ~ 0.35wt%;
The Zn of Ewt%, 0 < E≤0.1;
The Ti of Gwt%, 0 < G≤0.15;
The Pb of 0 ~ 0.01wt%;
The Na of 0 ~ 0.002wt%;
The Ga of 0 ~ 0.005Ga;
Surplus is Al.
2. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the content of described Si in aluminium alloy is 0.4wt% ~ 0.8wt%.
3. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the content of described Fe in aluminium alloy is 0.05wt% ~ 0.25wt%.
4. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the content of described Cu in aluminium alloy is 0.18wt% ~ 0.22wt%.
5. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the content of described Mn in aluminium alloy is 0.01wt% ~ 0.15wt%.
6. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the content of described Mg in aluminium alloy is 0.9wt% ~ 1.1wt%.
7. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the content of described Cr in aluminium alloy is 0.08wt% ~ 0.3wt%.
8. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the content of described Zn in aluminium alloy is 0.02wt% ~ 0.08wt%.
9. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the content of described Ti in aluminium alloy is 0.02wt% ~ 0.12wt%.
10. automobile structure according to claim 16 line aluminium alloys, is characterized in that, the grain-size of described aluminium alloy is L μm, 0 < L≤50.
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Cited By (4)
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| CN106939385A (en) * | 2017-02-27 | 2017-07-11 | 广东兴发铝业有限公司 | A kind of full aluminium trailer aluminium alloy and preparation method thereof |
| CN108866401A (en) * | 2018-07-16 | 2018-11-23 | 东北轻合金有限责任公司 | A kind of manufacturing method of the aluminium alloy strips of automobile decoration |
| CN109207818A (en) * | 2018-10-26 | 2019-01-15 | 中铝西南铝冷连轧板带有限公司 | A kind of car window frame bloom bright wisp 5505 aluminium alloy strips and preparation method thereof |
| EP3938554B1 (en) | 2019-03-13 | 2023-09-06 | Novelis, Inc. | Age-hardenable and highly formable aluminum alloys, monolithic sheet made therof and clad aluminum alloy product comprising it |
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| CN108866401A (en) * | 2018-07-16 | 2018-11-23 | 东北轻合金有限责任公司 | A kind of manufacturing method of the aluminium alloy strips of automobile decoration |
| CN109207818A (en) * | 2018-10-26 | 2019-01-15 | 中铝西南铝冷连轧板带有限公司 | A kind of car window frame bloom bright wisp 5505 aluminium alloy strips and preparation method thereof |
| EP3938554B1 (en) | 2019-03-13 | 2023-09-06 | Novelis, Inc. | Age-hardenable and highly formable aluminum alloys, monolithic sheet made therof and clad aluminum alloy product comprising it |
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