EP3497256A2 - ALUMINIUMLEGIERUNG UND ALUMINIUMLEGIERUNGSBAND FÜR DEN FUßGÄNGERAUFPRALLSCHUTZ - Google Patents
ALUMINIUMLEGIERUNG UND ALUMINIUMLEGIERUNGSBAND FÜR DEN FUßGÄNGERAUFPRALLSCHUTZInfo
- Publication number
- EP3497256A2 EP3497256A2 EP17751111.0A EP17751111A EP3497256A2 EP 3497256 A2 EP3497256 A2 EP 3497256A2 EP 17751111 A EP17751111 A EP 17751111A EP 3497256 A2 EP3497256 A2 EP 3497256A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- aluminum alloy
- weight
- content
- strip
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 155
- 238000000034 method Methods 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 32
- 239000000956 alloy Substances 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 27
- 238000000137 annealing Methods 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 17
- 230000032683 aging Effects 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 11
- 238000010791 quenching Methods 0.000 claims description 9
- 230000000171 quenching effect Effects 0.000 claims description 9
- 238000005097 cold rolling Methods 0.000 claims description 7
- 238000005098 hot rolling Methods 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 abstract description 12
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 239000000470 constituent Substances 0.000 abstract description 2
- 238000005275 alloying Methods 0.000 abstract 1
- 238000001723 curing Methods 0.000 description 34
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 27
- 229910052710 silicon Inorganic materials 0.000 description 27
- 239000010703 silicon Substances 0.000 description 25
- 239000011777 magnesium Substances 0.000 description 24
- 239000011572 manganese Substances 0.000 description 19
- 229910052749 magnesium Inorganic materials 0.000 description 18
- 239000000243 solution Substances 0.000 description 15
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 14
- 239000010949 copper Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000010936 titanium Substances 0.000 description 14
- 229910052748 manganese Inorganic materials 0.000 description 13
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 11
- 229910052719 titanium Inorganic materials 0.000 description 11
- 229910018643 Mn—Si Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 230000007774 longterm Effects 0.000 description 6
- 238000004064 recycling Methods 0.000 description 6
- 238000007670 refining Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000000265 homogenisation Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 150000002680 magnesium Chemical class 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910019752 Mg2Si Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011856 silicon-based particle Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- C22F1/043—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
-
- 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
- C22F1/05—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
Definitions
- the invention relates to an aluminum alloy for vehicle applications, an aluminum alloy strip made of an aluminum alloy and a body panel of a motor vehicle made of the aluminum alloy strip according to the invention.
- Aluminum alloys of the type AAöxxx are due to their advantageous
- a sheet for pedestrian impact protection must have sufficient energy absorption capacity and convert the impact energy into deformation energy in a targeted manner, so that it must have moderate yield strengths.
- Pedestrian impact protection relevant sheet metal does not change or only insignificantly over time.
- AA6xxx aluminum alloys which reduce hardening properties through specific manufacturing processes
- AA6xxx aluminum alloys with very low Mg and / or Si contents can also be used to achieve this goal.
- the production process, and in particular the control of the solution annealing conditions is very complicated and costly.
- Homogenization can influence, for example, the quality of the sheets produced.
- the present invention has the object to provide an aluminum alloy for vehicle applications, which can be processed by conventional process steps into a band, so that the produced band shows only a slight tendency to cure from the state T4 at a moderate level of strength and a deployment in the field of
- Pedestrian Impact Protection is possible.
- a corresponding Aluminum alloy strip and a body panel for a motor vehicle are proposed.
- Aluminum alloy strip comprising an aluminum alloy for
- Alloy components in weight percent comprises:
- Curing shows, so that the increase in yield strength R p o, 2 compared to the known AAöxxx aluminum alloys is lower.
- R p o, 2 the increase in yield strength
- aluminum alloy strip according to the invention has a significantly lower tendency to harden than aluminum alloy strips of comparative alloys.
- Aluminum alloy tape the silicon and magnesium portions of the aluminum alloy are usually responsible.
- the manganese content from 0.15 wt.% To 0.40 wt.%, Preferably 0.2 wt.% To 0.4 wt.% Or 0.20 wt.% To 0 , 30 wt .-% in connection with the iron content of 0.15 wt .-% to 0.25 wt .-% excess silicon bound by formation of Al-Fe-Mn-Si phases, so less silicon for curing by Elimination of silicon-containing particles is available. As a result, the curing of the
- Aluminum alloy of the aluminum alloy strip according to the invention can be reduced.
- to reduce the curing of the silicon content can be limited to a maximum of 0.50 wt .-%. Copper is usually added for reasons of increasing the strength of the aluminum alloy. Due to the
- Copper can also be the
- aluminum alloy strip according to the invention is therefore virtually copper-free and has a maximum of 0.06 wt .-% copper. Since copper is often an undesirable contamination during recycling, this is not only the
- Corrosion resistance of the aluminum alloy strip according to the invention improves, but also the recycling of the invention
- the chromium content is limited to a maximum of 0.03 wt .-% and the titanium content to 0.005 wt .-% to 0.10 wt .-%. Titanium improves grain refining when casting the aluminum alloy strip and is therefore at least 0.005 wt% in the aluminum alloy containing the
- Aluminum alloy ribbon according to the invention comprises. Titanium is usually included in grain refining at up to 0.10% by weight. The use of a maximum of 0.03 wt .-% titanium allows, with good grain refining the titanium content
- Aluminum alloy comprising the aluminum alloy strip according to the invention are present, which are characterized in particular by a low long-term curing at a heat load.
- the invention Aluminum alloy strip is therefore eminently suitable for use in sheet metal due to its lower curing in the automotive industry, which is used by its defined energy absorption capacity for pedestrian impact protection.
- the aluminum alloy strip according to a first
- Copper content is reduced to below 0.05 wt .-%, preferably at most 0.01 wt .-%. According to a further embodiment of the invention
- the aluminum alloy has a silicon content of 0.40 wt .-% to 0.48 wt .-% on. This specific reduction of the upper limit of the silicon content makes it possible to further reduce the hardening of the aluminum alloy by reducing the silicon atoms available for the precipitation.
- Aluminum alloy strip the aluminum alloy has a magnesium content of 0.35 wt .-% to 0.40 wt .-% on. This magnesium content makes it possible for the aluminum alloy to remain light while the curing properties remain the same has increased tensile strengths and improved forming properties due to the higher Mg contents.
- the aluminum alloy strip this has in the state T4 a yield strength R p0 , 2 of 55 MPa to 70 MPa and a tensile strength R m of 130 MPa to 160 MPa measured transversely to the rolling direction.
- the preferred combination of yield strength and tensile strength values of this aspect of the aluminum alloy ribbon allows for a preferred use in the manufacture of body panels suitable for pedestrian impact protection. Due to the moderate increase in strength or due to the reduced curing corresponding panels continue to have good properties even after prolonged use, even with permanent heat stress
- Aluminum alloy strip has this in state T6x a yield strength R p o, 2 of less than lOOMPa measured transversely to the rolling direction.
- state T6x a particularly practical heat treatment is referred to in the present patent application. This involves solution annealing at 530 ° C for 5 minutes followed by quenching to room temperature, cold aging for 7 days at room temperature, heating to 205 ° C for 30 minutes, and a
- the plate for 500 hours Heated to 80 ° C.
- the heat load usually promotes the curing of the
- the aluminum alloy ribbon of the present invention despite the increased thermal stress, exhibits significantly reduced cure and can provide yield strengths R p0 , 2 of less than 100 MPa.
- Aluminum alloy strip of an aluminum alloy comprising the steps of casting a rolling ingot or casting a casting strip, homogenizing the rolling ingot, hot rolling the rolling ingot or the
- the inventive method comprises conventional process steps and at the same time ensures a sufficient level of tensile strength with reduced curing, especially in a long-lasting heat load, for example as in a hood of a motor vehicle due to the narrow specified aluminum alloy.
- Pedestrian impact protection can be produced inexpensively and with high quality.
- the homogenization of the rolling ingot is preferably carried out at temperatures of 450 ° C to 580 ° C, preferably 500 ° C to 570 ° C for more than 1 hour.
- the hot rolling is preferably carried out at temperatures of 280 ° C to 550 ° C. It is also conceivable hot strip production with quenching of the aluminum alloy strip at the end of hot rolling, the hot strip temperature is reduced with the last hot roll pass to a maximum of 230 ° C and the tape is then wound up.
- Hot strip is subjected to cold rolling, in which, depending on the initial thickness of the hot strip and the final thickness of the strip to be achieved, cold rolling is carried out with or without intermediate annealing.
- cold rolling is carried out with or without intermediate annealing.
- Intermediate annealing can be carried out at temperatures of 280 ° C to 430 ° C in the chamber furnace for at least 30 minutes or in a continuous furnace. This is followed by solution heat treatment in a continuous furnace followed by quenching, for example to room temperature followed by cold aging for about 3 to 7 days, so that sheets and strips can be provided stably in state T4 for further processing.
- State T4 represents the preferred one
- aluminum strip according to the invention can be produced inexpensively due to the conventional production and yet provides a reduced curing available.
- the temperature of the aluminum strip during solution heat treatment is preferably at least 480 ° C., preferably at least 500 ° C. for at least 20 s.
- the tape according to the invention is insensitive to variations or change in temperature and duration during solution annealing, so that one equipped with a constant solution state
- Aluminum alloy tape can be provided.
- the stated object is achieved by a body panel part of a motor vehicle made of an aluminum alloy strip according to the invention.
- the body panel can be made available particularly cost-effective, because of the
- the body panel shows due to the lower tendency to cure only a small increase in yield strength R p0 , 2 in continuous use.
- a corresponding aluminum alloy strip allows a uniform
- the body panel is provided for the pedestrian impact protection plate, preferably a part of a fender, a part of a hood or a vehicle roof, a roof frame or a tailgate.
- the pedestrian impact protection plate preferably a part of a fender, a part of a hood or a vehicle roof, a roof frame or a tailgate.
- provided body panels must permanently moderate yield strengths R p o, 2, in order to absorb the impact energy in case of impact by deformation and to dampen the impact.
- Curing properties of the aluminum alloy according to the invention are advantageous here, since over the service life of the body panel part of the increase in yield strength R p0 , 2 remains moderate. In addition, a sufficient
- Aluminum alloy has the following alloy constituents in percent by weight: 0.40% by weight ⁇ Si ⁇ 0.55% by weight,
- Aluminum alloys lower fails.
- aluminum alloy according to the invention shows a much lower tendency for curing than
- Aluminum alloy is usually responsible for the silicon and magnesium content of the aluminum alloy. The closely coordinated,
- contents of silicon and magnesium according to the invention here 0.40% by weight to 0.55% by weight for silicon and 0.33% by weight to 0.40% by weight for magnesium,
- the content of manganese is from 0.2% by weight to 0.4% by weight, from 0.25% by weight to 0.4% by weight or from 0.20% by weight to 0, 30 wt .-% in connection with the iron content of 0.15 wt .-% to 0.25 wt .-% excess silicon bonded by formation of Al-Fe-Mn-Si phases, so less silicon for curing by precipitation of silicon-containing particles is available.
- the curing of the aluminum alloy according to the invention can be reduced in contrast to the previously known aluminum alloys.
- to reduce the curing of the silicon content can be limited to a maximum of 0.50 wt .-%. Copper is usually added for reasons of increasing the strength of the aluminum alloy. Due to the
- Copper can also be the
- the aluminum alloy according to the invention is therefore virtually copper-free and has a maximum of 0.06 wt .-% copper. Since copper is also often an undesirable contamination in recycling, this not only improves the corrosion resistance of the aluminum alloy, but also facilitates the recycling of the aluminum alloy.
- the chromium content is limited to a maximum of 0.03 wt .-% and the titanium content to 0.005 wt .-% to 0.10 wt .-%. Titanium improves grain refining when casting aluminum alloy and is therefore contained at least 0.005 wt .-% in the aluminum alloy. Titanium is usually included in grain refining at up to 0.10% by weight. The use of a maximum of 0.03 wt .-% titanium makes it possible to minimize the titanium content with good grain refining. It has been found that in the narrow range of alloy composition, special curing properties of the
- Aluminum alloy present which in particular by a low
- aluminum alloy according to the invention is therefore outstandingly suitable to be used because of the lower curing in the automotive industry for sheets, which are used by their defined energy absorption capacity for pedestrian impact protection.
- the aluminum alloy according to a first embodiment has a manganese content of 0.25 wt .-% to 0.35 wt .-%.
- Manganese content is achieved by further reducing the hardening of the aluminum alloy, since even more manganese is available to bind excess silicon through the formation of Al-Fe-Mn-Si phases. At the same time, the further limitation of manganese counteracts an increase in T4 strength.
- the corrosion behavior of the aluminum alloy according to the invention can be improved according to a further embodiment in that the copper content is reduced to below 0.05 wt .-%, preferably at most 0.01 wt .-%.
- the aluminum alloy has a silicon content of 0.40 wt .-% to 0.48 wt .-%. This specific reduction of the upper limit of the silicon content makes it possible to further reduce the hardening of the aluminum alloy by reducing the silicon atoms available for the precipitation.
- the aluminum alloy has a magnesium content of 0.35 wt .-% to 0.40 wt .-%. Through this magnesium content is achieved that the
- FIG. 3 shows a schematic perspective view of a motor vehicle with relevant body parts for pedestrian impact protection.
- 1 shows, in a very schematic representation, the method sequence with regard to an exemplary embodiment of a production method for the invention
- step 1 first a rolling ingot with an inventive
- a casting strip can also be cast directly from the aluminum alloy according to the invention in accordance with step 3.
- step 4 the rolling ingot or the casting belt is hot rolled.
- Hot rolling takes place at a temperature of 280 ° C to 550 ° C. Subsequently, the hot strip is wound up. However, the hot strip can also, for example, with a deterrent within the last two hot rolling passes on a
- a hot strip produced in this way can also be subjected to solution heat treatment, quenching and subsequent cold aging according to step 5, in order to provide a hot strip consisting of the aluminum alloy according to the invention in state T4.
- the hot strips can have thicknesses of about 2 mm to 12 mm. According to step 5, the hot strips are changed to state T4 to maximum
- state T4 may be achieved by solution heat treatment at 530 ° C for 5 minutes, quenching to room temperature, and subsequent cold aging at room temperature for 7 days. It has been shown that the aluminum alloy strip according to the invention, due to the relatively low Mg and Si contents relatively insensitive to the Eisensglühparametern, especially the solution annealing temperature is, as long as the
- Temperature is at least 480 ° C, preferably at least 500 ° C.
- the hot strip may first be subjected to cold rolling 6 followed by an intermediate annealing 7, the intermediate annealing 7 preferably taking place on the coil in a temperature range of 300 ° C. to 450 ° C. for at least 30 minutes in a chamber furnace.
- the insects can also in one
- the final cold rolling to final thickness according to step 8 is carried out, if an intermediate annealing is necessary. Otherwise, even after the cold rolling 6, the strip may be supplied with solution heat treatment, quenching to room temperature and cold aging according to step 9.
- the aluminum alloy strips produced in the condition T4 have final thicknesses of typically 0.8 mm to 2.5 mm and are used in the body construction of
- step 1 rolling ingots were cast in a continuous casting process according to step 1, which were then homogenized according to step 2 for 2 hours at temperatures of 550 ° C.
- the homogenized ingots were then hot rolled according to step 4 at temperatures of 280 ° C to 550 ° C to a hot strip thickness of 8 mm and then cooled to room temperature.
- the resulting hot strips were cold rolled according to steps 6, 7 and 8 with an intermediate annealing at an intermediate thickness of 3.5 mm to final thicknesses of 1.0 to 1.5 mm.
- the intermediate annealing was carried out at a maximum temperature of 350 ° C for one hour in a chamber furnace.
- alloy A has too little
- the alloy F contains 0.59 wt .-% too much silicon.
- the aluminum alloy ribbons produced were first placed in the T4 condition by solution annealing at 530 ° C for 5 minutes followed by 5 hours
- the embodiment according to the invention of the aluminum alloy D lies with the comparative alloys B and C in the preferred strength range in the state T4 of a yield strength R p o, 2 of about 55 MPa to 70 MPa at tensile strengths R m of 130 MPa to 160 MPa measured across the rolling direction.
- the comparative alloy E falls slightly behind the alloys B, C and D with respect to the tensile strengths R m and the yield strength R p o, 2 back.
- Embodiment and the comparative examples in state T4 are shown in Table 2.
- the excessively high measured values for the yield strength and the tensile strength of Comparative Example F are attributed to the increased Si content and the significantly reduced manganese content in comparison to the exemplary embodiment according to the invention.
- the overall too low level with respect to the yield strength or tensile strength of Comparative Example A is attributed to the reduced magnesium content of 0.25% by weight.
- Embodiment of the present invention for the heat treatment state T6 shown Heat treatment T6 after solution annealing, quenching and cold aging simulates the effect of painting and stoving of the paint by heating to 205 ° C for 30 minutes.
- Table 3 shows that the embodiment according to the invention does not show the slightest increase in these values with respect to the absolute and relative increase in yield strength and tensile strength, in particular compared to the comparative example of alloy C, the increases in tensile strength R m and
- Embodiment D if a heat treatment is reflected, which reflects a long-term heat load of a component.
- the long-term behavior was determined by the heat treatment state T6x.
- the state T6x is achieved starting from the state T6, as already described above, by
- Heat aging at 80 ° C for 500 hours simulates the practical use of the aluminum alloy sheets in the application, for example in the motor vehicle, when heat load. Since heat enhances the curing effects in AA6xxx alloys, the values for the yield strength generally increase relatively strongly.
- Embodiment D a significantly reduced increase in yield strength after aging for 500 hours at 80 ° C. Not only the absolute increase of
- the inventive embodiment of the aluminum alloy D is also in these, the application-oriented processing of the sheets in the field of vehicle construction simulating heat treatments also with the lowest values in terms of absolute or relative increase of the yield strength R p o, 2 in the state T6 with 2% cold deformation or % Cold deformation measured.
- Curing behavior of the aluminum alloy according to the invention can be read on the basis of the embodiment D compared to the other variants in particular from the comparison in the state T6x.
- Body panel parts of a motor vehicle which are intended for pedestrian impact protection, schematically shows Fig. 3 in a perspective view.
- Body panels which must be designed for pedestrian impact protection. They must therefore have a specific energy absorption behavior, which is still present especially during prolonged heat load. If parts of these provided for the pedestrian impact protection plates made of an aluminum alloy according to the invention, the long-term curing of the sheets can be reduced even in heat-stressed areas. As can be seen from the exemplary embodiment of the alloy D according to the invention, it is advantageous to produce corresponding bodywork parts of a motor vehicle from an aluminum alloy according to the invention, since these have a particularly advantageous curing behavior with moderate yielding limits and
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16184151 | 2016-08-15 | ||
PCT/EP2017/070676 WO2018033537A2 (de) | 2016-08-15 | 2017-08-15 | ALUMINIUMLEGIERUNG UND ALUMINIUMLEGIERUNGSBAND FÜR DEN FUßGÄNGERAUFPRALLSCHUTZ |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3497256A2 true EP3497256A2 (de) | 2019-06-19 |
EP3497256B1 EP3497256B1 (de) | 2020-07-01 |
Family
ID=56684548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17751111.0A Active EP3497256B1 (de) | 2016-08-15 | 2017-08-15 | Aluminiumlegierung und aluminiumlegierungsband für den fussgängeraufprallschutz |
Country Status (4)
Country | Link |
---|---|
US (1) | US20190194779A1 (de) |
EP (1) | EP3497256B1 (de) |
JP (1) | JP6721782B2 (de) |
WO (1) | WO2018033537A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3666915A1 (de) * | 2018-12-11 | 2020-06-17 | Constellium Neuf Brisach | Verfahren zur herstellung von aluminium magnesium silicium legierungen mit guter oberflächequalität |
CN109457147B (zh) * | 2018-12-28 | 2020-10-20 | 辽宁忠旺集团有限公司 | 一种铝制打包带及其生产工艺 |
FR3122187B1 (fr) | 2021-04-21 | 2024-02-16 | Constellium Neuf Brisach | Tôles d’aluminium 5xxx dotée d’une aptitude à la mise en forme élevée |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3243371A1 (de) * | 1982-09-13 | 1984-03-15 | Schweizerische Aluminium AG, 3965 Chippis | Aluminiumlegierung |
CA2231870C (en) | 1995-09-19 | 2005-02-22 | Alcan International Limited | Precipitation-hardened aluminum alloys for automotive structural applications |
EP0936278B2 (de) * | 1998-02-17 | 2010-07-07 | Aleris Aluminum Bonn GmbH | Verfahren zur Herstellung eines ALMGSI-Legierungsprodukts |
JP3802695B2 (ja) * | 1998-11-12 | 2006-07-26 | 株式会社神戸製鋼所 | プレス成形性およびヘム加工性に優れたアルミニウム合金板 |
CH693673A5 (de) * | 1999-03-03 | 2003-12-15 | Alcan Tech & Man Ag | Verwendung einer Aluminiumlegierung vom Typ AlMgSi zur Herstellung von Strukturbauteilen. |
US6780259B2 (en) | 2001-05-03 | 2004-08-24 | Alcan International Limited | Process for making aluminum alloy sheet having excellent bendability |
JP4379149B2 (ja) * | 2003-04-15 | 2009-12-09 | 日本軽金属株式会社 | プレス成形性および連続抵抗スポット溶接性に優れたアルミニウム合金板およびその製造方法 |
NO20034731D0 (no) | 2003-10-22 | 2003-10-22 | Norsk Hydro As | Aluminiumslegering |
EP1533394A1 (de) | 2003-11-20 | 2005-05-25 | Alcan Technology & Management Ltd. | Automobilkarosseriebauteil |
EP1987170A1 (de) * | 2006-02-17 | 2008-11-05 | Norsk Hydro ASA | Aluminiumlegierung mit verbesserten staucheigenschaften |
JP2008045192A (ja) * | 2006-08-21 | 2008-02-28 | Kobe Steel Ltd | 成形時のリジングマーク性に優れたアルミニウム合金板 |
ES2426226T3 (es) * | 2009-06-30 | 2013-10-22 | Hydro Aluminium Deutschland Gmbh | Banda de AlMgSi para aplicaciones con altos requisitos de conformación |
JP6190307B2 (ja) * | 2014-03-31 | 2017-08-30 | 株式会社神戸製鋼所 | 成形性と焼付け塗装硬化性とに優れたアルミニウム合金板 |
-
2017
- 2017-08-15 JP JP2019508248A patent/JP6721782B2/ja active Active
- 2017-08-15 WO PCT/EP2017/070676 patent/WO2018033537A2/de unknown
- 2017-08-15 EP EP17751111.0A patent/EP3497256B1/de active Active
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2019
- 2019-02-14 US US16/276,231 patent/US20190194779A1/en active Pending
Also Published As
Publication number | Publication date |
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US20190194779A1 (en) | 2019-06-27 |
JP6721782B2 (ja) | 2020-07-15 |
JP2019529693A (ja) | 2019-10-17 |
WO2018033537A3 (de) | 2018-04-19 |
WO2018033537A2 (de) | 2018-02-22 |
EP3497256B1 (de) | 2020-07-01 |
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