CN104937120B - It is capable of the aluminium magnesium alloy belt material of high shape and intergranular corrosion resistance - Google Patents
It is capable of the aluminium magnesium alloy belt material of high shape and intergranular corrosion resistance Download PDFInfo
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- CN104937120B CN104937120B CN201380044183.0A CN201380044183A CN104937120B CN 104937120 B CN104937120 B CN 104937120B CN 201380044183 A CN201380044183 A CN 201380044183A CN 104937120 B CN104937120 B CN 104937120B
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
- C22C21/04—Modified aluminium-silicon alloys
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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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- 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
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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
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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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Abstract
The present invention relates to a kind of cold rolling aluminum alloy strip being made up of AlMg aluminium alloys and its production method.Also propose the corresponding component made of the aluminum alloy strip, present invention aims at design a kind of individual layer aluminum alloy strip, it has enough resistance to intergranular corrosion and has extraordinary formability, so as to manufacture the large area drawing part of sufficient intensity, such as motor vehicle automobile door inner panel, the purpose realizes that the aluminium alloy has following alloying component by the aluminum alloy strip being made up of AlMg aluminium alloys：The weight % of weight % Tong of weight % Tie of Gui≤0.2≤0.35≤0.15, the weight % of 0.2 weight % ≦ Meng≤0.35, the weight % of weight % Tai of weight % Xin of weight % Ge of 4.1 weight % ≦ Mei≤4.5≤0.1≤0.25≤0.1, individually most 0.05 weight %, sum total do not surpass 0.15 weight % for residual Al and inevitable impurity, aluminum alloy strip has recrystallization texture, the average crystal grain size of structure is 15 μm to 30 μm, and preferably 15 μm to 25 μm, the final soft annealing of aluminum alloy strip is completed in continuous furnace.
Description
Technical field
The present invention relates to a kind of aluminium alloy strips of cold rolling being made up of AlMg aluminium alloys and it is a kind of for its production
Method.In addition also proposed by this aluminium alloy strips and made of corresponding part.
Background technology
Magnalium (AlMg) alloy of AA 5xxx types is used in ship, automobile, Yi Jifei in the form of piece or sheet material or band
The construction of welding or connected structure in machine manufacture.This kind of alloy is characterised by high intensity, and with content of magnesium increase this
Intensity can also strengthen.With the content of magnesium more than 3%, the magnalium especially with the AA 5xxx types of the content of magnesium more than 4% closes
Gold, in the case where bearing elevated temperature conditions, the trend of intercrystalline corrosion can increase.In the case where temperature is 70-200 DEG C, β-
Al5Mg3 phases will separate out along crystal boundary, this is mutually referred to as into β particles, and this is mutually in feelings existing for corrosive medium
Can optionally it be separated out under condition.Which results in, as long as with respect to the presence of Korrosionsmedium, such as exist in the form of moisture
Water, just can not especially be used in heated region with extraordinary Intensity attribute and extraordinary formability
The aluminium alloy of AA5182 types (Al 4.5%Mg 0.4%Mn).This more particularly to the part of automobile, it usually needs at this
It is subject to ability cathode electrophoresis dipping lacquer coating (KTL) outside base part and is then baked in baking process, and just because of passing through this
Individual baking process may cause the sensitiveness of the intercrystalline corrosion on common aluminium alloy strips.Further, it is necessary in order in automobile
Use in field and in view of the subsequent live load of the molding procedure in the production of part and part.
The liability of intercrystalline corrosion would generally be examined in the standard testing (NAMLT experiments) according to ASTM G67, wherein,
It is subject to nitric acid to test sample, and measures the caused mass loss due to intercrystalline corrosion.According to ASTM G67, intolerant to intergranular
The mass loss of the material of corrosion is more than 15mg/cm2。
For the sheet material of automotive field, such as inner plate of car door is, it is necessary to there is extraordinary formability.With regard to this, these demand bases
This is determined by the rigidity of all parts, and the intensity of material functions only as secondary effect.These parts have been usually subjected to multiple
The forming process in stage, such as it is the inner plate of car door of the window frame with one.
Therefore, in addition to the corrosivity of AlMg aluminium alloys, its plasticity also the application to this material possibility tool
Have a great impact.For example, material known at present result in, it is impossible to carry out drawing into the side wall of automobile from single sheet material
Plate, this not only causes reconfiguring for side wall, also causes the additional process for the manufacture of automobile sidewall sections to become certainty
Need.
Tiefungspr ü fung nach Erichsen (Sven-Gan Eriksson cupping examinations can be passed through for example in tension test
Test) (DIN EN ISO 20482) measure shaping behavior, wherein, drift can be pressed on sheet material, so as to result in cold forming.
During cold forming, until the load reduction caused by crack produces occurs, power and the displacement of drift can be measured.With
32mm punch diameter and 35.4mm mode diameter, cited SZ32 stretchings measurement for reducing by means of rubbing in the application
Wipe the Teflon membranes of power and implement.By so-called plane strain (Plane-Strain) drawing experiments, using according to DIN
EN ISO 12004 Nakajima geometries, the test of other Deep-drawing properties is completed with 100mm punch diameter.For
This, makes to have the sample of particular geometries to be subjected to deep drawing test until there is crack, depth when crack occurs will act as
The index of the plasticity of material and use.
Known a kind of aluminium alloy strips for being used to can ends be made from JP 2011-052290 A, this band is although tool
There is the thickness of very little, can but undertake load as much as possible.With regard to this, this band has recrystallization texture.
A kind of in addition, known automobile chassis part, this bottom made of aluminium composite material from the A1 of EP 2 302 087
Disc portion has the aluminium alloy layer as outer layer.It is have based on used alloying component, the characteristics of this aluminium composite material
There is the excellent intensity level in the case of high corrosion resistance and its low weight.
By the high AA5xxx aluminium alloys of content of magnesium and made of composite solution there is etch-proof external aluminium to close
Layer gold, still, this solution have the defects of such, i.e. and its production process cost is high, and in aluminium composite material and its
The bonding station of its part engagement, such as at trimming, drill hole and indentation, there, still have the corrosion risk increased.
The content of the invention
Present invention is accordingly directed to a kind of aluminum of individual layer.Based on this, it is an object of the present invention to provide a kind of individual layer
Aluminium alloy strips, this aluminium alloy strips have enough resistance to intergranular corrosion, and also have good formability, so as to
It is enough that large area drawing part as such as car door inner board with sufficient intensity is thus made.In addition, it should also propose
A kind of method, profit can produce the aluminium alloy strips of individual layer in this way.Finally it should also propose by the aluminium according to the present invention
Part made by alloy strip steel rolled stock.
According to first of present invention teaching, above-mentioned purpose by a kind of cold rolling, the aluminium that is made up of AlMg aluminium alloys closes
Gold ribbon material reaches, wherein, this aluminium alloy has following alloying component：
The weight % of silicon≤0.2,
The weight % of iron≤0.35,
The weight % of copper≤0.15,
The weight % of 0.2 weight %≤manganese≤0.35,
The weight % of 4.1 weight %≤magnesium≤4.5,
The weight % of chromium≤0.1,
The weight % of zinc≤0.25,
The weight % of titanium≤0.1
Residual Al and a variety of inevitable impurity, the content of these impurity are individually no more than 0.05 weight %, its
Sum total is no more than 0.15 weight %, wherein, aluminium alloy strips have a recrystallization texture, the average crystal grain size of structure be 15 μm extremely
Between 30 μm, between preferably value is 15 μm to 25 μm, and the final softening of aluminium alloy strips is completed in continuous furnace
Annealing.
It has proven convenient that in the specification of the aluminium alloy of AA5182 types, the alloy section of special, narrow restriction be present, this
On the one hand individual section is provided with enough resistance to intergranular corrosion, on the other hand can with respect to specific restrictive condition, such as
In the case of average grain size and the mode of final soft annealing, while also there is excellent formability.It is especially average
Grain size and required aluminium alloy strips aluminium alloy alloying component combination, can realize, reach a kind of deformation
Degree, this deformation extent realize the production of large area, drawing aluminium strip part in the case of sufficient intensity.Especially
Prove, the continuous furnace for substituting the coil annealing generally implemented in batch-type furnace and using more significantly improves formability.
According to the first design of aluminium alloy strips, aluminium alloy extraly has below to al alloy component content
One or more in limitation：
The weight % of 0.03 weight % silicon≤0.10,
Copper≤0.1%, preferably 0.04%≤copper≤0.08%,
The weight % of chromium≤0.05,
The weight % of zinc≤0.05,
The weight % of 0.01 weight %≤titanium≤0.05.
Just aluminium alloy strips more preferable resistance to intergranular corrosion have been constrained to for what the content of copper was up to 0.1 weight %.
In the case where copper content is 0.04 weight % to 0.08 weight %, it is possible to achieve increased contribution of the copper for intensity, but
Nevertheless, without drastically reducing its corrosion resistance.Than giving silicon, chromium, zinc and the titanium of value higher amount to cause aluminium alloy
The formability of variation.Iron and manganese composition of existing 0.03 to the 0.1 weight % silicon composition in the content with providing in the alloy
Combination under can especially cause it is relative be evenly distributed, compact quaternary α-Al (Fe, Mn) Si phase particles, this particle meeting
Increase the intensity of aluminium alloy, without causing negative impact to other attributes as morphotropism or corrosion resistance.
, can be for example with Ti-Borid-Draht oder-Stangen (two generally during the continuously casting of aluminium alloy
The line or bar of titanium boride) form, added using titanium as grain refiner.Therefore aluminium alloy has in another embodiment
There is at least 0.01 weight % titanium composition.
Another improvement of decay resistance and formability to aluminium alloy strips can be achieved in that, i.e. close aluminium
Amount of money other places has the one or more of the limitation to alloy component content below：
The weight % of chromium≤0.02,
The weight % of zinc≤0.02
It can confirm, chromium significantly have impact on aluminium alloy with the content of its impurity critical value less than 0.05 weight %
The formability of band, and therefore only allow it to be included in the aluminium of the aluminium alloy strips according to the present invention with content as few as possible
In alloy.The content of zinc is set below 0.05 weight % impurity critical value, so that it will not destroy aluminium alloy strips
Overall corrosion resistance.
In addition, also demonstrate, the iron content in the content value allowed according to the aluminium alloy of AA5182 types and silicon and manganese
Composition combines, and as described above, has the influence to formability.Iron is combined with silicon and manganese, to the heat endurance of aluminium alloy strips
Contribute, so as to which the iron content for enabling aluminum alloy to band advantageously according to next design is 0.1 weight % to 0.25
Weight %, or be 0.10 weight % to 0.20 weight %.
According to another design of aluminium alloy strips, for manganese content and equally, manganese content is preferably limited
In 0.20 weight % between 0.30 weight %, in order to reach the optimal formability of aluminium alloy strips.
According to the another embodiment of aluminium alloy strips, can be come with 4.2 weight % to 4.4 weight % content of magnesium real
A kind of existing particularly preferred half-way house for providing high intensity, excellent resistance to intergranular corrosion and the forming property of optimization.
In order to ensure necessary intensity in application, according to a kind of lower embodiment, enabling aluminum alloy to band has
0.5mm to 4mm thickness.The thickness is preferably set to be 1mm between 2.5mm, because most of application necks of aluminium alloy strips
Domain is all in this section.
Finally, the application in automotive field according to the aluminium alloy strips of the present invention is especially thus achieved, i.e. aluminium
Alloy strip steel rolled stock has at least 110MPa yield limit R in the state of softnessp0.2And at least 255MPa tension is strong
Spend Rm.It has proven convenient that the aluminium alloy strips with corresponding yield limit and tensile strength are particularly suitable in automotive field
Using.
According to second of present invention teaching, by a kind of method for producing aluminium alloy strips, corresponding to above-described embodiment,
And so reach previously described purpose, i.e. this method is included following methods step：
A kind of rolling ingot bar of-casting, preferably casts in DC continuously casting processes；
- with the time of at least 0.5 hour, rolling ingot bar is homogenized at 480 DEG C to 550 DEG C；
- at a temperature of 280 DEG C to 500 DEG C to roll ingot bar hot rolling；
- with 40% to 70% or 50% to 60% rolling rate, aluminium alloy strips are cold-rolled to final thickness；
- under the conditions of 300 DEG C -500 DEG C, soft annealing is carried out to the aluminium alloy strips that rolling is completed in continuous furnace.
It has proven convenient that using the parameter provided, with reference to the al alloy component being previously mentioned, can produce with 15 μm to 30 μm
Average crystal grain size aluminium alloy strips, this band has enough resistance to intergranular corrosion, there is provided enough intensity and
Additionally there are good transform properties, so as to produce large area, drawing sheet material part.Roll the homogeneous of ingot bar
The purpose of change is, the equilibrium of the equilibrium of the structure in hot rolling ingot bar to be rolled and alloying component distribution.Arrived at 280 DEG C
Hot rolling at a temperature of 500 DEG C realizes, thoroughly recrystallizing in course of hot rolling, wherein, it is straight generally to implement hot rolling
It is 2.8mm-8mm to thickness.Subsequent cold rolling step is any limitation as with 40% to 70% or 50% to 60% rolling rate,
So as in both cases, thoroughly recrystallizing for aluminium alloy strips during soft annealing all account for.Aluminum alloy strip
The rolling rate of material is bigger, and its average crystal grain size will be smaller, wherein, it has proven convenient that in the case of the rolling rate higher than 70%,
Too small average crystal grain size such case can occur during subsequent soft annealing.Rolling rate less than 40%, will
Make average crystal grain size excessive in soft annealing, so that resistance to intergranular corrosion can strengthen, but formability can but be reduced.Roll
The soft annealing processing of manufactured aluminium alloy strips is carried out in continuous furnace, and this continuous furnace generally has 1-10 DEG C/sec
Firing rate, and therefore with the batch-type furnace that is heated to whole coiled material conversely, because its quickly heating and to aluminum alloy strip
The subsequent structure attribute of material has obvious influence.Especially it is ensured that compared with box furnace annealing, this is selected,
Soft annealing can realize the processability of the optimization of band in continuous furnace.
Alternately, aluminium alloy strips can be manufactured using intermediate annealing according to the another embodiment of this method.
According to the option of this replaceability, alternately implement following methods step after hot-rolled process：
- hot rolled aluminium alloy strips are carried out with cold rolling processing until it reaches interior thickness, so determine in this
Between thickness, i.e. final thickness is reached with 40% to 70% or 50% to 60% subsequent cold rolling degree,
- intermediate annealing is carried out to aluminium alloy strips at a temperature of 300 DEG C to 500 DEG C,
- aluminium alloy strips progress cold rolling processing is reached finally with 40% to 70% or 50% to 60% rolling rate
Thickness,
- at a temperature of 300 DEG C to 500 DEG C, the aluminium alloy strips completed in continuous furnace to rolling carry out softening and moved back
Fire.
The intermediate annealing of aluminium alloy strips can be completed in batch-type furnace or in continuous furnace.It can not be determined
Influence to formability.Importantly, what kind of rolling rate reached in the case where being cold-rolled to final thickness, and whether
The soft annealing processing of band is carried out in continuous furnace.Independent of the mode of intermediate annealing, and thus combine alloying component and come really
Determine processability and decay resistance.
In order to avoid configuration state is further change under the conditions of curling after soft annealing, according to the another kind of this method
Design, aluminium alloy strips are cooled to the temperature of the temperature, be preferably up to 70 DEG C of 100 DEG C of highest after soft annealing,
And then rolled.
As it was noted above, according to another design of this method, carried out in batch furnace or in continuous furnace
Intermediate annealing.
If aluminium alloy strips to be cold-rolled to 0.5mm-4mm final thickness, preferably 1mm-2.5mm final thickness,
This is the metal sheet that typical application field, especially auto manufacturing field provide very good forming ability, can be incited somebody to action
This metal sheet large area drawing, while providing the high intensity along with enough resistance to intergranular corrosion.
Soft annealing is preferably implemented in continuous furnace, with 350 DEG C -550 DEG C of metal temperature, preferably 400 DEG C -
450 DEG C of metal temperature, with the time of -5 minutes 10 seconds, preferably completed with the time of -1 minute 20 seconds.Reach therefrom
The band of cold rolling abundant and thoroughly recrystallize, and also reached in a manner of the process reliability and economy of height
Respective attributes in terms of extraordinary formability and average grain size.
Finally, purpose described above has been reached by a kind of automobile component, this part is by the aluminium according to the present invention
Alloy strip steel rolled stock is formed.These parts are characterised by, as described above, can by these part large area drawing, and
The part that for example such large area can be provided is used for automobile construction.Further, since the Intensity attribute provided, these parts are also
With required stiffness properties and corrosion resistance, these attributes are all necessary in automobile construction.
Such as can so contemplate, by this part according to a kind of other designs be designed to a kind of car body component or
Body parts, this part have also related to heat resistance except high intensity demand.Preferably, by the aluminum alloy strip according to the present invention
Material manufactures " Body-in-White-Teile " (white body component), such as board member or Rear cover inner part in door.
Brief description of the drawings
Hereinafter, the present invention is further described according to embodiment and with reference to accompanying drawing.Wherein：
Fig. 1 shows a kind of schematic flow diagram of the embodiment of the manufacture method of aluminium alloy strips,
Fig. 2 a show the Plane-Strain-Tiefungsmessung (plane strains according to DIN EN ISO 12004
Drawing measure) sample geometry top view,
Fig. 2 b show the Plane-Strain-Tiefungsmessung (plane strains according to DIN EN ISO 12004
Drawing measure) experimental rig schematic cross-section,
Fig. 3 is shown in Erichsen Tiefungsversuch (the Sven-Gan Eriksson cups according to DIN EN ISO 20482
Prominent experiment) in the experimental rig for being used for the measurement of SZ32 cuppings sectional view,
Fig. 4 shows a kind of exemplary embodiments of large area, drawing the sheet material product according to the present invention.
Embodiment
Fig. 1 shows the flow of the embodiment for manufacturing aluminum strip.Flow chart shown in Fig. 1 in a schematic manner,
Show each method and step in the manufacturing process according to the aluminium alloy strips of this method.
Among step 1, a kind of rolling ingot bar is cast by the AlMg aluminium alloys with following alloying component, such as in DC
Cast in continuously casting process：
The weight % of silicon≤0.2,
The weight % of iron≤0.35,
The weight % of copper≤0.15,
The weight % of 0.2 weight %≤manganese≤0.35,
The weight % of 4.1 weight %≤magnesium≤4.5,
The weight % of chromium≤0.1,
The weight % of zinc≤0.25,
The weight % of titanium≤0.1
Residual Al and a variety of inevitable impurity, the content of these impurity are individually no more than 0.05 weight %, its
Sum total is no more than 0.15 weight %.
Next, homogenize process is carried out to rolling ingot bar in method and step 2, can be with the side in one or more stages
Formula implements this processing procedure.During homogenize process, 480 to 550 DEG C of ingot bar of rolling was at least kept at 0.5 hour
Temperature.Then in method and step 3, by these rolling ingot bar hot rolling treatments, wherein, generally reach 280 DEG C to 500 DEG C of temperature
Degree.The final thickness of hot-rolled band is, for example, 2.8 to 8mm.The final thickness of hot-rolled band can so be selected, i.e. so that
Only implement cold rolling step 4 after hot rolling, and wherein, with 40% to 70%, preferably 50% to 60% rolling rate by hot-rolled band
Thickness be reduced to its final thickness.
Then, the aluminium alloy strips for making cold rolling be final thickness are subjected to soft annealing processing.According to the present invention, in continous way
Soft annealing processing is carried out in stove.In table 1 in shown embodiment, the second way with intermediate annealing is implemented.
With regard to this, cold rolling 4a processing is carried out to the hot-rolled band after hot rolling according to method and step 3, this cold rolling is by aluminium alloy strips cold rolling
To interior thickness, this interior thickness is determined in this way, i.e. roll final cold rolling for final thickness and required
Rate is 40% to 70% or 50% to 60%.During ensuing intermediate annealing, band is preferably enabled aluminum alloy to thoroughly
Recrystallize.In embodiment, intermediate annealing with 400 DEG C to 450 DEG C in continuous furnace or with 330 DEG C to 380 DEG C box
Carried out in stove.
Intermediate annealing step is shown with method and step 4b in Fig. 1., will in the method and step 4c according to Fig. 1
The last cold rolling of aluminium alloy strips of intermediate annealing is final thickness, the rolling rate in wherein method and step 4c for 40% to 70% it
Between, between preferably 50% to 60%.Then, the state that band is again converted to softness is enabled aluminum alloy to by soft annealing, its
In, soft annealing is implemented in continuous furnace with 400 DEG C to 450 DEG C according to the present invention.The annealing in comparative example in form 4
Processing is carried out with 330 DEG C to 380 DEG C in batch-type furnace (KO).In different experiments, in addition to different aluminium alloys, also set
The different rolling rates after intermediate annealing are put.The value of the rolling rate after intermediate annealing is similarly given in form 1 and 4.
In addition, also measure the average crystal grain size of the aluminium alloy strips of soft annealing.With regard to this, according to Barker (Bark) method anodization
Handled vertical section, and then it measured under the microscope according to ASTM E1382, and by average crystal grain diameter come
Average crystal grain size is determined.
Its mechanical properties value, especially yield limit R are determined to corresponding manufactured aluminium alloy stripsp0.2, tensile strength Rm,
Uniform elongation AgWith elongation percentage A80mm, such as form 2, shown in 5.Except the aluminium according to measured by EN 10002-1 or ISO 6892
Beyond the mechanical properties value of alloy strip steel rolled stock, also by μm in units of give average crystal grain size according to ASTM E1382.In addition,
Resistance to intergranular corrosion is measured according to ASTM G67, and is that (initial point 0 is small under the original state of not extra heat treatment
When).In order to simulate the use on automobile, before erosion test aluminium alloy strips have been carried out with different heat treatment.The
The storage of 20 minutes that one heat treatment contains aluminum strip at a temperature of 185 DEG C, in order to record KTL, (ability cathode electrophoresis dipping lacquer applies
Layer) circulation.
In another measurement series, 200 hours or 500 at a temperature of aluminium alloy strips are additionally stored in into 80 DEG C
Hour and then it is born erosion test.Because the forming processes of aluminium alloy strips or sheet material may extraly influence it
Corrosion resistance, aluminium alloy strips are drawn 15% in another experiment, at elevated temperatures, it is heat-treated or heat is stored up
Deposit, it is born the test of the intercrystalline corrosion according to ASTM G67 afterwards, its mass loss can be measured among this test.
The alloying component of four kinds of different aluminium alloys altogether is given in form 1, these compositions are included in AA5182 classes
In the composition specification of the aluminium alloy of type.Illustrate presently used material with reference to alloy, and by itself and variant 1,2, and 3 carried out
Contrast.In addition, in table 1 the mode also on final annealing, final rolling rate and it is measured by μm in units of
Explanation in terms of average crystal grain size (crystal grain diameter).With regard to this, unique difference of variant 1 and 2 is final rolling rate, and this is final
Rolling rate causes the formation of other grain sizes.Therefore, exclude beyond almost consistent alloying component, variant 2 and variant 1
Essential distinction is that under conditions of same continuous furnace the former has 57% final rolling rate.Its result is, with variant 1
In 33 μm compare, variant 2 has 18 μm of average crystal grain size.Band in form 1 is 400 DEG C to 450 in continuous furnace
Kept for 20 seconds to 1 minute, be then cooled to and to be rolled less than 100 DEG C at a temperature of DEG C.As illustrated by form 2
, the sample taken is measured according to corresponding DIN EN iso standards.
Significantly to be found out according to form 2, variant 1 does not reach 110MPa positively in terms of yield limit, but right
- represent-that there is the value less than 110MPa in angular measurement with D marks.On the contrary, in the vertical of rolling direction L and rolling direction
Direction Q measurement but shows that variant 1 has actually reached 110MPa yield limit Rp0.2.With reference to alloy and the He of variant 2
3 are all considerably higher than the lower limit of this yield limit.Variant 2 is all certain in all draw directions according to an embodiment of the invention
Ground has reached at least 110MPa yield limit.Clearly as can be seen that the content of magnesium with the weight % of highest 4.95
Variant 3 reached highest yield limit and tensile strength.Further, it is also possible to find out, different rolling between variant 1 and 2
Rate not only significantly affects grain size, but also tensile strength is brought up to significantly greater than 110MPa value.
Especially, according to the alloy variant 2 of the present invention with having lower anisotropy compared with alloy, this is lower at it
In-plane anisotropy value Δ r among embodied.With regard to this, in-plane anisotropy Δ r is defined as 1/2* (rL+rQ-2rD), its
Middle rL, rQAnd rDBe longitudinally, laterally with diagonally opposed r values.With regard to this from 1/4* (rL+rQ+2rD) in the average r values that draw
It is not different substantially with reference material.
Shown in form 3, be related to the measured value in terms of resistance to intergranular corrosion.There is illustrated according to the present invention
Variant 2 compared with the measured value with reference to alloy, especially in terms of for a long time load, in extended state and unstretched condition
Under, all there is the value that can compare therewith.With regard to this, variant 2 and reference alloy are almost consistent.Variant 3 is although bending with maximum
The limit and tensile strength are taken, is but shown among erosion test, its too high content of magnesium result in especially for a long time
Excessive mass loss in test, for a long time test are gone back in addition to the short time was in the temperature cycle of 20 minutes of 185 DEG C
Extraly contain the load of the long-time of 200 hours at 80 DEG C.
It is related to the measured value of the formability in form 3, shows, especially punch test of the variant 2 in SZ32
Central and in Plane-Strain (plane strain) drawing experiments extensibilities better than refer to alloy.With with reference to aluminium alloy
Band is compared, and is shown according to the forming property of the obvious improvement of the made aluminium alloy strips of variant 2, even if reducing content of magnesium
In the case of, it can reach with referring to yield limit and tensile strength of the alloy with sample value, without causing resistance to intergranular corrosion side
The massive losses in face.This is especially confirmed in the mass loss measurement completed in being tested according to ASTM G67 NAML.
Using variant 2 can clearly in Tiefungsversuch nach Erichsen (Erichsen test) and
7% and 10% Deep-drawing property is measured in Plane-Strain-Tiefungsversuch (plane strain drawing experiments) respectively
Improvement, this improvement show according to the present invention aluminium alloy strips extra shaping possibility.In order to produce drawing,
The panel component of large area, such as the door inner panel of automobile, shaping possibility that can be extra to this are used.
Below, " Tiefung SZ32 " (the SZ cuppings for being carried out according to DIN EN ISO 20482 are illustrated briefly
Measurement) experiment, and the Plane-Strain- for being carried out according to DIN EN ISO 12004 with Nakajima geometries
Tiefungsversuch (plane strain drawing experiments) experimental rig.
The geometry of testpieces 1 is shown in fig. 2 a.The examination that will properly be cut in this wise from the sheet metal of circle
Test part 1 to cut, i.e. it is 20mm that its web 4, which has 100mm width and the radius 2 of cut away section,.With 100mm size 3
Indicate punch diameter.Fig. 2 b show the testpieces 1 being stretched between two pressing devices 5,6.Testpieces 1, which is placed on, to be connect
In receipts portion 8, and it is pressed on by pressing device 5,6 on support, utilizes the drift with the hemispherical tip that radius is 100mm
7, by testpieces with direction of arrow drawing.Pressing device is extraly in entrance of the side towards support 8 with 5 or 10mm half
Footpath.The power used in tension test is implemented in measurement in deformation process, and the load rapid drawdown for illustrating cracking initiation can promote pair
The measurement of respective punch depth.
According to " SZ32 AEG-process " (the Tiefung SZ32) of Sven-Gan Eriksson (Erichsen) there is similar device to set
Put, but the testpieces but properly cut without use.Pressing device 10 and acceptance division 11 only are maintained at by testpieces 9 with regard to this
Between, and pulling force is applied to it with drift 12, until the load that can similarly measure pulling force declines.Then, similarly
Measure the relevant position of drift.The opening of shown mould is 35.4mm, a diameter of 32mm of punch in figure 3, i.e. drift half
Footpath is 16mm.Teflon membranes are extraly used in order to reduce the frictional force in SZ32 drawing experiments.
Other embodiments and comparative example are established in form 4 and 5, and it is rotten for mechanical property aspect and resistance to intergranular
Measured in terms of corrosion.It can be seen that using continuous furnace and combine especially selected 15 μm of -30 μ of grain size
M- is preferably 15 μm -25 μm-combination can bring good compromise effect between resistance to intergranular corrosion and mechanical test value.Cause
This, such as 3,4,7 and 11 there is enough resistance to intergranular corrosion according to an embodiment of the invention, and also have in automotive field
Use necessary to mechanical test value Rp0.2And Rm, so that its is adapted for the part of drawing to large area highly desirablely
Production.
Exemplified a kind of corresponding " Body-in-White-Teil " (white car in the form of inner plate of car door in Fig. 4
Body part), it can produce this part from the metallic plate of single drawing by using according to the aluminium alloy strips of the present invention.
With regard to this, the thickness of band is preferably 1.0-2.5mm.In addition it is also possible to contemplate other automobile components with metal shell structure, example
Such as Rear cover inner, hood and structural partsof automobiles, these parts all have very high to formability and intercrystalline corrosion aspect
Demand.
Table 1
Table 2
Table 3
Table 4
Table 5
Claims (19)
1. a kind of aluminium alloy strips for the cold rolling being made up of AlMg aluminium alloys, it is characterised in that the aluminium alloy has following conjunction
Golden composition:
The weight % of Gui≤0.2,
The weight % of Tie≤0.35,
The weight % of Tong≤0.15,
The weight % of 0.2 weight % ≦ Meng≤0.35,
The weight % of 4.1 weight % ≦ Mei≤4.5,
The weight % of Ge≤0.1,
The weight % of Xin≤0.25,
The weight % of Tai≤0.1,
Residual Al and a variety of inevitable impurity, the content of the impurity are individually no more than 0.05 weight %, and it is summed up
No more than 0.15 weight %, wherein, the aluminium alloy strips have recrystallization texture, and the average crystal grain size of the structure is 15
μm between 25 μm, and the final soft annealing to the aluminium alloy strips is completed in continuous furnace.
2. aluminium alloy strips according to claim 1, it is characterised in that the aluminium alloy extraly has one or more
Alloying component content as defined below：
The weight % of 0.03 weight % ≦ Gui≤0.10,
Tong≤0.1%,
The weight % of Ge≤0.05,
The weight % of Xin≤0.05,
The weight % of 0.01 weight % ≦ Tai≤0.05.
3. aluminium alloy strips according to claim 1 or 2, it is characterised in that the aluminium alloy extraly have it is a kind of or
A variety of alloying components as defined below:
The weight % of Ge≤0.02,
The weight % of Xin≤0.02.
4. aluminium alloy strips according to claim 1, it is characterised in that iron content is 0.10 weight % to 0.25 weight
Measure %.
5. aluminium alloy strips according to claim 4, it is characterised in that, iron content is 0.10 weight % to 0.2 weight %.
6. aluminium alloy strips according to claim 1, it is characterised in that manganese content is 0.20 weight % to 0.30 weight
Measure %.
7. aluminium alloy strips according to claim 1, it is characterised in that content of magnesium is 4.2 weight % to 4.4 weight %.
8. aluminium alloy strips according to claim 1, it is characterised in that the aluminium alloy strips have 0.5mm to 4mm's
Thickness.
9. aluminium alloy strips according to claim 1, it is characterised in that the aluminium alloy strips have under soft condition
At least 110MPa yield limit Rp0.2And at least 255MPa tensile strength Rm。
10. a kind of method for producing aluminium alloy strips as claimed in any of claims 1 to 9, methods described
Include following methods step：
- casting rolling ingot bar；
- with the time of at least 0.5 hour, the rolling ingot bar is homogenized at 480 DEG C to 550 DEG C；
- roll ingot bar hot rolling to described at a temperature of 280 DEG C to 500 DEG C；
- with 40% to 70% rolling rate, the aluminium alloy strips are cold-rolled to final thickness；
- at 300 DEG C to 500 DEG C, soft annealing is carried out to the aluminium alloy strips that rolling is completed in continuous oven.
11. according to the method for claim 10, it is characterised in that after the hot-rolled step, alternately carry out with
Lower method and step:
- hot rolled aluminium alloy strips are carried out with cold rolling processing until it reaches interior thickness, so determine it is described in
Between thickness, i.e. final thickness is reached with 40% to 70% final cold rolling rate,
- intermediate annealing is carried out to the aluminium alloy strips at a temperature of 300 DEG C to 500 DEG C,
- with 40% to 70% rolling rate to the aluminium alloy strips carry out cold rolling processing reach the final thickness,
- at a temperature of 300 DEG C to 500 DEG C, the aluminium alloy strips completed in continuous furnace to rolling carry out softening and moved back
Fire.
12. the method according to claim 10 or 11, it is characterised in that the rolling rate is 50% to 60%.
13. according to the method for claim 11, it is characterised in that the final cold rolling rate is 50% to 60%.
14. the method according to claim 10 or 11, it is characterised in that close the aluminium after the soft annealing step
Gold ribbon material is cooled to the temperature of 100 DEG C of highest and rolled.
15. according to the method for claim 11, it is characterised in that the intermediate annealing process is in batch furnace or continous way
Carried out in stove.
16. the method according to claim 10 or 11, it is characterised in that the aluminium alloy strips are cold-rolled to 0.5mm extremely
4mm final thickness.
17. the method according to claim 10 or 11, it is characterised in that soft annealing processing in continuous furnace with
350 DEG C to 550 DEG C of metal temperature is carried out 10 seconds to 5 minutes.
A kind of 18. automotive part being made up of aluminium alloy strips as claimed in any of claims 1 to 9.
19. part according to claim 18, it is characterised in that the part is matched somebody with somebody for the car body component or vehicle body of automobile
Part.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12181356.2 | 2012-08-22 | ||
| EP12181356 | 2012-08-22 | ||
| EPPCT/EP2013/064736 | 2013-07-11 | ||
| EP2013064736 | 2013-07-11 | ||
| PCT/EP2013/067487 WO2014029856A1 (en) | 2012-08-22 | 2013-08-22 | Highly malleable and igc-resistant almg strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104937120A CN104937120A (en) | 2015-09-23 |
| CN104937120B true CN104937120B (en) | 2017-11-17 |
Family
ID=49084999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380044183.0A Expired - Fee Related CN104937120B (en) | 2012-08-22 | 2013-08-22 | It is capable of the aluminium magnesium alloy belt material of high shape and intergranular corrosion resistance |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20150159250A1 (en) |
| EP (1) | EP2888383B1 (en) |
| JP (1) | JP5923665B2 (en) |
| KR (1) | KR101709289B1 (en) |
| CN (1) | CN104937120B (en) |
| CA (1) | CA2882614C (en) |
| ES (1) | ES2569945T3 (en) |
| RU (1) | RU2608931C2 (en) |
| WO (1) | WO2014029856A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20160186301A1 (en) * | 2013-08-21 | 2016-06-30 | Drexel University | Annealing Process |
| PL3303649T3 (en) * | 2015-06-05 | 2024-01-29 | Novelis, Inc. | An automotive body part comprising an aluminium alloy and a method for producing the automotive body part |
| KR101911037B1 (en) * | 2015-06-25 | 2018-10-23 | 하이드로 알루미늄 롤드 프로덕츠 게엠베하 | ALMG-strip capable of high strength and easy molding and its manufacturing method |
| EP3589771B9 (en) * | 2017-02-28 | 2024-07-03 | Tata Steel IJmuiden B.V. | Method for producing a steel strip with an aluminium alloy coating layer |
| WO2020182506A1 (en) | 2019-03-08 | 2020-09-17 | Aleris Aluminum Duffel Bvba | Method of manufacturing a 5xxx-series sheet product |
| CN113186413A (en) * | 2021-04-29 | 2021-07-30 | 郑州明泰实业有限公司 | Preparation method of 5083-O-state battery case side plate for new energy automobile |
| JP2024534911A (en) | 2021-09-03 | 2024-09-26 | スペイラ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Aluminum alloy strip optimized for forming and method for manufacturing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6086690A (en) * | 1997-03-07 | 2000-07-11 | Alcan International Limited | Process of producing aluminum sheet articles |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151013A (en) | 1975-10-22 | 1979-04-24 | Reynolds Metals Company | Aluminum-magnesium alloys sheet exhibiting improved properties for forming and method aspects of producing such sheet |
| JP2671121B2 (en) | 1986-03-10 | 1997-10-29 | スカイアルミニウム 株式会社 | Rolled aluminum alloy sheet for forming, which has excellent elongation, bendability, and overhanging property, and method for producing the same |
| JPH0668146B2 (en) | 1986-09-09 | 1994-08-31 | スカイアルミニウム株式会社 | Method for manufacturing rolled aluminum alloy plate |
| EP0681034A1 (en) | 1994-05-06 | 1995-11-08 | The Furukawa Electric Co., Ltd. | A method of manufacturing an aluminum alloy sheet for body panel and the alloy sheet manufactured thereby |
| FR2740144B1 (en) * | 1995-10-18 | 1997-11-21 | Pechiney Rhenalu | ALMG ALLOY FOR WELDED CONSTRUCTS WITH IMPROVED MECHANICAL CHARACTERISTICS |
| NL1003453C2 (en) | 1996-06-28 | 1998-01-07 | Hoogovens Aluminium Nv | AA5000 type aluminum sheet and a method for its manufacture. |
| DE10231437B4 (en) * | 2001-08-10 | 2019-08-22 | Corus Aluminium N.V. | Process for producing an aluminum wrought alloy product |
| RU2230131C1 (en) * | 2002-09-20 | 2004-06-10 | Региональный общественный фонд содействия защите интеллектуальной собственности | Alloy of the system of aluminum-magnesium-manganese and items made out of the alloy |
| DE50307952D1 (en) * | 2003-04-08 | 2007-09-27 | Hydro Aluminium Deutschland | Flat, rolled semi-finished aluminum alloy |
| JP4534573B2 (en) * | 2004-04-23 | 2010-09-01 | 日本軽金属株式会社 | Al-Mg alloy plate excellent in high-temperature high-speed formability and manufacturing method thereof |
| RU2280705C2 (en) * | 2004-09-15 | 2006-07-27 | Открытое акционерное общество "Каменск-Уральский металлургический завод" | Aluminum-based alloy and articles made from this alloy |
| EP1852251A1 (en) * | 2006-05-02 | 2007-11-07 | Aleris Aluminum Duffel BVBA | Aluminium composite sheet material |
| JP2008202134A (en) * | 2007-02-22 | 2008-09-04 | Kobe Steel Ltd | Aluminum alloy hot rolled sheet having excellent press formability |
| JP5432642B2 (en) * | 2009-09-03 | 2014-03-05 | 株式会社Ｕａｃｊ | Aluminum alloy plate for can end and manufacturing method thereof. |
| ES2392131T3 (en) * | 2009-09-15 | 2012-12-04 | Hydro Aluminium Rolled Products Gmbh | AL composite material translation mechanism part |
-
2013
- 2013-08-22 WO PCT/EP2013/067487 patent/WO2014029856A1/en active Application Filing
- 2013-08-22 ES ES13756053.8T patent/ES2569945T3/en active Active
- 2013-08-22 CN CN201380044183.0A patent/CN104937120B/en not_active Expired - Fee Related
- 2013-08-22 CA CA2882614A patent/CA2882614C/en not_active Expired - Fee Related
- 2013-08-22 JP JP2015527926A patent/JP5923665B2/en active Active
- 2013-08-22 EP EP13756053.8A patent/EP2888383B1/en not_active Revoked
- 2013-08-22 KR KR1020157007194A patent/KR101709289B1/en active IP Right Grant
- 2013-08-22 RU RU2015110021A patent/RU2608931C2/en not_active IP Right Cessation
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2015
- 2015-02-18 US US14/624,793 patent/US20150159250A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6086690A (en) * | 1997-03-07 | 2000-07-11 | Alcan International Limited | Process of producing aluminum sheet articles |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150159250A1 (en) | 2015-06-11 |
| EP2888383A1 (en) | 2015-07-01 |
| JP2015532679A (en) | 2015-11-12 |
| CN104937120A (en) | 2015-09-23 |
| CA2882614A1 (en) | 2014-02-27 |
| CA2882614C (en) | 2018-01-02 |
| KR101709289B1 (en) | 2017-02-22 |
| JP5923665B2 (en) | 2016-05-24 |
| RU2608931C2 (en) | 2017-01-26 |
| WO2014029856A1 (en) | 2014-02-27 |
| KR20150076151A (en) | 2015-07-06 |
| RU2015110021A (en) | 2016-10-20 |
| EP2888383B1 (en) | 2016-03-30 |
| ES2569945T3 (en) | 2016-05-13 |
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