EP0811700B1 - Tiefziehbare und schweissbare Aluminiumlegierung vom Typ AlMgSi - Google Patents
Tiefziehbare und schweissbare Aluminiumlegierung vom Typ AlMgSi Download PDFInfo
- Publication number
- EP0811700B1 EP0811700B1 EP97810320A EP97810320A EP0811700B1 EP 0811700 B1 EP0811700 B1 EP 0811700B1 EP 97810320 A EP97810320 A EP 97810320A EP 97810320 A EP97810320 A EP 97810320A EP 0811700 B1 EP0811700 B1 EP 0811700B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- max
- weight
- annealing
- weldable
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
-
- 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 a deep-drawn and weldable AlMgSi type aluminum alloy in the form of strips or sheets for the production of inner skin parts of a body, especially an automobile body.
- As part of the invention is also a method for producing the Alloy and an inner skin part produced by deep drawing.
- AlMgSi alloy is known from JP-A-05 112840, which are used to manufacture automotive body panels by press forming and that under paint baking conditions can be cured.
- the alloy also contains Aluminum 0.4 to 1.5% Mg, 0.24 to 1.5% Si, 0.12 to 1.5% Cu, 0.005 to 0.15% Ti and max. 0.25% Fe.
- the alloy is also intended to create the possibility the overall component consisting of outer and inner skin parts of body parts in the interior material recycle (production scrap and end-of-life vehicles), taking minor contaminants from other automotive materials aluminum-based, steel, copper wires, etc. should be.
- the contents (% by weight) of the alloy elements Mg and Si through the corner points A * B * C * D * with the coordinates Si mg A * 0.80 0.40 B * 0.80 0.55 C * 0.95 0.55 D * 0.95 0.40 are limited and the alloy in addition Cu 0.15-0.45 Mn 0.05-0.20 Fe 0.05 to 0.55 Zn 0.05-0.50 optionally still 0.05-0.20 as well as further alloy elements individually max. 0.10, total max. 0.30 and aluminum as the rest.
- the copper content of the alloy according to the invention is preferably between 0.2 and 0.4% by weight.
- zinc By adding 0.05 to 0.4% by weight, in particular 0.1 up to 0.3% by weight zinc can further increase the strength combined with a slight improvement in formability can be achieved.
- a vanadium content of 0.05 to 0.2% by weight leads to a further improvement in the forming behavior.
- the average grain size in the sheet should not exceed 80 ⁇ m and is preferably less than 60 microns.
- the alloy according to the invention is carried out in the usual way Continuous or strip casting, hot and cold rolling into one Sheet or strip processed.
- Continuous or strip casting hot and cold rolling into one Sheet or strip processed.
- the solution annealing in one Continuous belt furnace in a temperature range of 520 ° C up to 580 ° C or up to the solidus temperature of the alloy is carried out.
- Optimal mechanical strength values and properties can be achieved if the alloy is preferably at the latest 60 min after the solution annealing of a so-called stabilization annealing of a maximum of 24h in a temperature range from 50 ° C to 150 ° C.
- the alloy can be rolled to final thickness, solution annealed and then a temperature range of 160 ° C to 220 ° C can be thermoset. It is advantageous also a maximum of 25% deformation after solution annealing and before final annealing in the temperature range mentioned.
- the alloy according to the invention is particularly suitable for the production of deep-drawn inner skin parts of a body, especially an automobile body.
- Ac-120 is the preferred material for outer skin parts.
- the contents (% by weight) of the alloy elements Mg and Si through the corner points A'B'C'D 'with the coordinates Si mg A ' 0.50 0.35 B ' 0.50 0.50 C ' 0.75 0.50 D ' 0.75 0.35 limited, a preferred area by the corner points A "B” C “D” with the coordinates Si mg A " 0.55 0.35 B “ 0.55 0.45 C " 0.7 0.45 D " 0.7 0.35 is limited.
- a B C (not according to the invention) Si 0.85 0.94 0.69 mg 0.40 0.40 0.37 Cu 0.40 0.25 0.38 Mn 0.08 0.08 0.06 Fe 0.25 0.25 0.23 with aluminum as the remainder and a standard body sheet alloy AA6016 (Ac-120) used as a comparison alloy for outer skin applications were processed in the usual way by continuous casting, hot and cold rolling to a sheet with a thickness of 1.3 mm.
- the mechanical strength values and properties of the alloy according to the invention and the comparison alloy determined on sheet metal samples are compared below.
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Continuous Casting (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
- Aushärtbarkeit wie Ac-120
- Problemlos punktschweissbar bzw. laserschweissbar mit Ac-120
- Festigkeit gleich oder besser als Ac-120
- Umformbarkeit (Streck- und Tiefziehen) gleich oder besser als Ac-120
- Korrosionsbeständigkeit vergleichbar mit Ac-120.
Si | Mg | |
A* | 0,80 | 0,40 |
B* | 0,80 | 0,55 |
C* | 0,95 | 0,55 |
D* | 0,95 | 0,40 |
Cu | 0,15-0,45 |
Mn | 0,05-0,20 |
Fe | 0,05-0,55 |
Zn | 0,05-0,50 |
wahlweise noch | 0,05 - 0,20 |
Si | Mg | |
A' | 0,50 | 0,35 |
B' | 0,50 | 0,50 |
C' | 0,75 | 0,50 |
D' | 0,75 | 0,35 |
Si | Mg | |
A" | 0,55 | 0,35 |
B" | 0,55 | 0,45 |
C" | 0,7 | 0,45 |
D" | 0,7 | 0,35 |
A | B | C (nicht erfindungsgemäss) | |
Si | 0,85 | 0,94 | 0,69 |
Mg | 0,40 | 0,40 | 0,37 |
Cu | 0,40 | 0,25 | 0,38 |
Mn | 0,08 | 0,08 | 0,06 |
Fe | 0,25 | 0,25 | 0,23 |
Rm (MPa) | Rp0,2 (MPa) | Rp0,2/Rm | A10 (%) | n5% | r | |
A | 235 | 125 | 0,54 | 22,5 | 0,28 | 0,68 |
B | 242 | 134 | 0,55 | 25,8 | 0,27 | 0,68 |
C | 212 | 106 | 0,50 | 26,5 | 0,30 | 0,65 |
Ac-120 | 222 | 114 | 0,51 | 28,0 | 0,27 | 0,55 |
- Die Aushärtbarkeit der Legierungen A und B ist vergleichbar mit derjenigen von Ac-120. Ein geringer Si-Ueberschuss von Ac-120 wird kompensiert durch den Cu-Gehalt der Legierungen A und B.
- Der verhältnismässig geringe Kupfergehalt der Legierungen A und B erlaubt ein problemloses Verschweissen mit Ac-120.
- Die Festigkeit der Legierung A und B ist infolge des erhöhten Mg- bzw. Cu-Gehaltes gegenüber Ac-120 erhöht.
- Bezüglich der Umformoperationen Streckziehen und Tiefziehen zeigen die Legierungen A und B ein gegenüber Ac-120 gleiches oder sogar besseres Verhalten.
- Die Korrosionsbeständigkeit der Legierungen A und B ist mit derjenigen von Ac-120 vergleichbar. Ein erhöhter Cu-Gehalt der erfindungsgemässen Legierung wird kompensiert durch einen geringeren Si-Ueberschuss.
- Si
- Ac-120 mit ca. 1,1% Si ist in grossem Umfang auffangbar, da alle anderen relevanten Aluminium-Knetwerkstoffe geringere Si-Gehalte aufweisen.
- Mg
- Der Mg-Gehalt ist gegenüber demjenigen von Ac-120 erhöht, d.h. es sind auch Zusätze von AlMg-Werkstoffen auffangbar.
- Cu
- Der geringe Cu-Gehalt von Ac-120 erlaubt problemlos das Auffangen kleinerer Cu-Verunreinigungen wie z.B. Kupferdrähte.
- Fe
- Der beschränkte Fe-Gehalt von Ac-120 ermöglicht auch problemlos das Auffangen kleinerer Verunreinigungen aus Stahl.
Claims (9)
- Tiefziehbare und schweissbare Aluminumlegierung vom Typ AlMgSi in der Form von Bändern oder Blechen zur Herstellung von Innenhautteilen einer Karosserie, insbesondere einer Automobilkarosserie, wobei
die Gehalte (Gew.%) der Legierungselemente Mg und Si durch die Eckpunkte A*B*C*D* mit den KoordinatenSi Mg A* 0,80 0,40 B* 0,80 0,55 C* 0,95 0,55 D* 0,95 0,40 Cu 0,15-0,45 Mn 0,05-0,20 Fe 0,25-0,55 Zn 0,05-0,50 wahlweise noch V 0,05-0,2 - Legierung nach Anspruch 1, dadurch gekennzeichnet, dass sie 0,2 bis 0,4 Gew.% Cu enthält.
- Legierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie 0,05 bis 0,4 Gew.%, insbesondere 0,1 bis 0,3 Gew. % Zn enthält.
- Legierung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die mittlere Korngrösse max. 80 µm, vorzugsweise max. 60 µm beträgt.
- Verfahren zur Herstellung einer Legierung nach einem der Ansprüche 1 bis 4 durch Strang- oder Bandgiessen, Warm- und Kaltwalzen, wobei eine Lösungsglühung in einem Banddurchlaufofen in einem Temperaturbereich von 520°C bis 580°C bzw. bis zur Solidustemperatur der Legierung durchgeführt wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die Legierung nach der Lösungsglühung, vorzugsweise spätestens 60 min nach der Lösungsglühung, einer Stabilisierungsglühung von maximal 24h in einem Temperaturbereich von 50°C bis 150°C unterzogen wird.
- Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Legierung nach der Lösungsglühung um max. 25% umgeformt und anschliessend in einem Temperaturbereich von 160°C bis 220°C ausgehärtet wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Endglühung als Lackeinbrennung durchgeführt wird.
- Innenhautteile einer Karosserie, insbesondere einer Automobilkarosserie, durch Tiefziehen hergestellt aus einer Legierung nach einem der Ansprüche 1 bis 4.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01401/96A CH690916A5 (de) | 1996-06-04 | 1996-06-04 | Tiefziehbare und schweissbare Aluminiumlegierung vom Typ AlMgSi. |
CH140196 | 1996-06-04 | ||
CH1401/96 | 1996-06-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0811700A1 EP0811700A1 (de) | 1997-12-10 |
EP0811700B1 true EP0811700B1 (de) | 2002-06-12 |
Family
ID=4209568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97810320A Expired - Lifetime EP0811700B1 (de) | 1996-06-04 | 1997-05-26 | Tiefziehbare und schweissbare Aluminiumlegierung vom Typ AlMgSi |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0811700B1 (de) |
AT (1) | ATE219158T1 (de) |
CH (1) | CH690916A5 (de) |
DE (1) | DE59707470D1 (de) |
ES (1) | ES2177920T3 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0992598A4 (de) * | 1998-04-08 | 2002-10-30 | Furukawa Electric Co Ltd | Verfahren zur herstellung einer aluminiumlegierung zum planieren von materialien und verwendung bei automobilen |
CH693673A5 (de) * | 1999-03-03 | 2003-12-15 | Alcan Tech & Man Ag | Verwendung einer Aluminiumlegierung vom Typ AlMgSi zur Herstellung von Strukturbauteilen. |
FR2835533B1 (fr) * | 2002-02-05 | 2004-10-08 | Pechiney Rhenalu | TOLE EN ALLIAGE Al-Si-Mg POUR PEAU DE CARROSSERIE AUTOMOBILE |
US20050000609A1 (en) * | 2002-12-23 | 2005-01-06 | Butler John F. | Crash resistant aluminum alloy sheet products and method of making same |
EP1533394A1 (de) * | 2003-11-20 | 2005-05-25 | Alcan Technology & Management Ltd. | Automobilkarosseriebauteil |
EP2156945A1 (de) | 2008-08-13 | 2010-02-24 | Novelis Inc. | Plattiertes Kraftfahrzeug-Blechprodukt |
CN104532080A (zh) * | 2014-12-31 | 2015-04-22 | 东莞市东兴铝业有限公司 | 一种汽车排气管用铝合金材料及其制备方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3135633A (en) * | 1959-09-08 | 1964-06-02 | Duralumin | Heat treatment process improving the mechanical properties of aluminiummagnesium-silicon alloys |
US4082578A (en) * | 1976-08-05 | 1978-04-04 | Aluminum Company Of America | Aluminum structural members for vehicles |
CH624147A5 (de) * | 1976-12-24 | 1981-07-15 | Alusuisse | |
DE3243371A1 (de) * | 1982-09-13 | 1984-03-15 | Schweizerische Aluminium AG, 3965 Chippis | Aluminiumlegierung |
US4808247A (en) * | 1986-02-21 | 1989-02-28 | Sky Aluminium Co., Ltd. | Production process for aluminum-alloy rolled sheet |
FR2601040B1 (fr) * | 1986-07-07 | 1988-09-02 | Cegedur | Alliage d'aluminium chaudronnable et soudable et son procede de fabrication |
JPH0674480B2 (ja) * | 1987-09-03 | 1994-09-21 | 本田技研工業株式会社 | 溶接性、耐糸錆性、成形性及び焼付硬化性に優れた成形用及び溶接用A▲l▼合金板及びその製造法 |
JPH05112840A (ja) * | 1991-10-18 | 1993-05-07 | Nkk Corp | プレス成形性に優れた焼付硬化性Al−Mg−Si系合金板及びその製造方法 |
CH685707A5 (de) * | 1991-12-16 | 1995-09-15 | Alusuisse Lonza Services Ag | Karosserieblech. |
JP2626958B2 (ja) * | 1993-03-16 | 1997-07-02 | スカイアルミニウム株式会社 | 成形性および焼付硬化性に優れたアルミニウム合金板の製造方法 |
DE69520007T3 (de) * | 1994-09-06 | 2008-04-30 | Novelis, Inc., Toronto | Wärmebehandlungsverfahren für blech aus aluminium-legierung |
CH688379A5 (de) * | 1994-11-29 | 1997-08-29 | Alusuisse Lonza Services Ag | Tiefziehbare und schweissbare Aluminiumlegierung vom Typ AlMgSi |
-
1996
- 1996-06-04 CH CH01401/96A patent/CH690916A5/de not_active IP Right Cessation
-
1997
- 1997-05-26 AT AT97810320T patent/ATE219158T1/de not_active IP Right Cessation
- 1997-05-26 DE DE59707470T patent/DE59707470D1/de not_active Expired - Fee Related
- 1997-05-26 ES ES97810320T patent/ES2177920T3/es not_active Expired - Lifetime
- 1997-05-26 EP EP97810320A patent/EP0811700B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59707470D1 (de) | 2002-07-18 |
ATE219158T1 (de) | 2002-06-15 |
ES2177920T3 (es) | 2002-12-16 |
EP0811700A1 (de) | 1997-12-10 |
CH690916A5 (de) | 2001-02-28 |
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