EP0911420B1 - Aluminium casting alloy - Google Patents

Aluminium casting alloy Download PDF

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Publication number
EP0911420B1
EP0911420B1 EP98810210A EP98810210A EP0911420B1 EP 0911420 B1 EP0911420 B1 EP 0911420B1 EP 98810210 A EP98810210 A EP 98810210A EP 98810210 A EP98810210 A EP 98810210A EP 0911420 B1 EP0911420 B1 EP 0911420B1
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Prior art keywords
alloy
max
aluminium casting
casting
aluminium
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EP98810210A
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German (de)
French (fr)
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EP0911420A1 (en
Inventor
Hubert Koch
Horst Schramm
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Aluminium Rheinfelden GmbH
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Aluminium Rheinfelden GmbH
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Priority claimed from EP97810756A external-priority patent/EP0908527A1/en
Application filed by Aluminium Rheinfelden GmbH filed Critical Aluminium Rheinfelden GmbH
Priority to EP98810210A priority Critical patent/EP0911420B1/en
Priority to US09/163,822 priority patent/US6309481B1/en
Priority to BR9803822-2A priority patent/BR9803822A/en
Priority to CA002249762A priority patent/CA2249762A1/en
Publication of EP0911420A1 publication Critical patent/EP0911420A1/en
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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

Definitions

  • the invention relates to an aluminum casting alloy, in particular an aluminum die casting alloy.
  • Die casting technology has developed so far today that it is possible to cast pieces to manufacture with high quality requirements.
  • the quality of a die casting depends not only on the machine setting and the chosen method, but also to a large extent on the chemical composition and structure the cast alloy used. These two latter parameters are known to influence the pourability, the feeding behavior (G. Schindelbauer, J. Czikel “Mold filling capacity and volume deficit of common aluminum die casting alloys” Foundry Research 42, 1990, pp. 88/89), the mechanical Properties and - particularly important in die casting - the service life the casting tools (L.A. Norström, B. Klarenfjord, M. Svenson "General Aspects on Wash-out Mechanism in Aluminum Diecasting Dies ", 17th International NADCA Diecasting Congress 1993, Cleveland OH).
  • AIMg alloys are also known which are distinguished by a high ductility. Such an alloy is disclosed, for example, in US-A-5 573 606. However, these alloys have the disadvantage of high mold wear and cause molding problems, which significantly reduces productivity.
  • WO-A-9625528 are die-cast alloys made of aluminum known with the essential alloying elements magnesium, manganese and silicon.
  • the present invention is therefore based on the object of providing a die-casting alloy with a high elongation at break with an even acceptable yield strength, which has good castability and sticks as little as possible in the mold.
  • the following minimum values must be achieved in the as-cast state: Elongation (A5): 14% yield strength (Rp 0.2): 100 MPa
  • the alloy should also be easy to weld, a high corrosion resistance and in particular show no susceptibility to stress corrosion cracking.
  • the one used to make the alloy The degree of purity of the aluminum corresponds to a smelting aluminum quality Al 99.8 H.
  • This alloy has a well molded ⁇ phase in the as-cast state.
  • the eutectic mainly consisting of Mg 2 Si and Al 6 Mn phases, is very fine and therefore leads to a highly ductile fracture behavior.
  • the manganese content prevents sticking in the mold and ensures good mold release.
  • the magnesium content in connection with manganese gives the casting a high level of design stability, so that very little or no distortion can be expected even when demolding
  • this alloy can also be used for Use thixocasting or thixo forging.
  • the ⁇ phase forms when it melts again immediately, so that excellent thixotropic properties are available.
  • the iron content is kept as deep as possible in the alloy.
  • the alloy composition according to the invention despite low Iron content does not tend to stick in the mold Contrary to popular belief that with high iron contents, sticking in the mold is prevented in any case has been found in the alloy type proposed according to the invention, that when the iron content is increased to more than 0.4% by weight again an increase in the tendency to stick is observed.
  • the following content ranges are preferred for the individual alloy elements: magnesium 2.5 to 3.3% by weight, in particular 2.6 to 3.3% by weight Silizum 0.20 to 0.30% by weight manganese 0.40 to 1.2% by weight, in particular 0.50 to 1.0% by weight iron Max. 0.30% by weight, in particular max. 0.15% by weight
  • the alloy therefore contains 0.10 to 0.60 % By weight, in particular 0.30 to 0.60% by weight of cobalt and / or 0.05 to 0.80% by weight, in particular 0.10 to 0.50% by weight of cerium.
  • An optimal effect is achieved if the sum of the cobalt, cerium and manganese contents in the alloy at least Is 0.80% by weight and the alloy contains at least 0.50% by weight of manganese.
  • the aluminum casting alloy according to the invention is particularly suitable for this Thixocasting or thixo forging.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Forging (AREA)
  • Continuous Casting (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

Die Erfindung betrifft eine Aluminium-Gusslegierung, insbesondere eine Aluminium-Druckgusslegierung.The invention relates to an aluminum casting alloy, in particular an aluminum die casting alloy.

Die Druckgusstechnik hat sich heute soweit entwickelt, dass es möglich ist, Gussstükke mit hohen Qualitätsansprüchen herzustellen. Die Qualität eines Druckgussstückes hängt aber nicht nur von der Maschineneinstellung und dem gewählten Verfahren ab, sondern in hohem Masse auch von der chemischen Zusammensetzung und der Gefügestruktur der verwendeten Gusslegierung. Diese beiden letztgenannten Parameter beeinflussen bekanntermassen die Giessbarkeit, das Speisungsverhalten (G. Schindelbauer, J. Czikel "Formfüllungsvermögen und Volumendefizit gebräuchlicher Aluminiumdruckgusslegierungen" Giessereiforschung 42, 1990, S. 88/89), die mechanischen Eigenschaften und -- im Druckguss ganz besonders wichtig -- die Lebensdauer der Giesswerkzeuge (L.A. Norström, B. Klarenfjord, M. Svenson "General Aspects on Wash-out Mechanism in Aluminium Diecasting Dies", 17. International NADCA Diecastingcongress 1993, Cleveland OH).Die casting technology has developed so far today that it is possible to cast pieces to manufacture with high quality requirements. The quality of a die casting depends not only on the machine setting and the chosen method, but also to a large extent on the chemical composition and structure the cast alloy used. These two latter parameters are known to influence the pourability, the feeding behavior (G. Schindelbauer, J. Czikel "Mold filling capacity and volume deficit of common aluminum die casting alloys" Foundry Research 42, 1990, pp. 88/89), the mechanical Properties and - particularly important in die casting - the service life the casting tools (L.A. Norström, B. Klarenfjord, M. Svenson "General Aspects on Wash-out Mechanism in Aluminum Diecasting Dies ", 17th International NADCA Diecasting Congress 1993, Cleveland OH).

In der Vergangenheit wurde der Entwicklung von speziell für den Druckguss anspruchsvoller Gussstücke geeigneten Legierungen wenig Aufmerksamkeit geschenkt. Die meisten Anstrengungen wurden auf die Weiterentwicklung der Verfahrenstechnik des Druckgussprozesses verwendet. Gerade von Konstrukteuren der Automobilindustrie wird aber immer mehr gefordert, schweissbare Bauteile mit hoher Duktilität im Druckguss zu realisieren, da bei hohen Stückzahlen der Druckguss die kostengünstigste Produktionsmethode darstellt.In the past, the development of especially for die casting became more demanding Little attention was paid to castings of suitable alloys. Most efforts have been made on the further development of process engineering of the die casting process. Especially by designers in the automotive industry But there is an increasing demand for weldable components with high ductility in the To realize die casting, because with large quantities the die casting is the cheapest Represents production method.

Durch die Weiterentwicklung der Druckgusstechnik ist es heute möglich, schweissbare und wärmebehandelbare Gussstücke von hoher Qualität herzustellen. Dies hat den Anwendungsbereich für Druckgussteile auf sicherheitsrelevante Komponenten erweitert. Für derartige Komponenten werden heute üblicherweise AlSiMg-Legierungen eingesetzt, da diese eine gute Giessbarkeit bei geringem Formenverschleiss aufweisen. Damit die geforderten mechanischen Eigenschaften, insbesondere eine hohe Bruchdehnung, erreicht werden können, müssen die Gussteile einer Wärmebehandlung unterzogen werden. Diese Wärmebehandlung ist zur Einformung der Gussphasen und damit zur Erzielung eines zähen Bruchverhaltens notwendig. Eine Wärmebehandlung bedeutet in der Regel eine Lösungsglühung bei Temperaturen knapp unterhalb der Solidustemperatur mit nachfolgendem Abschrecken in Wasser oder einem anderen Medium auf Temperaturen <100°C. Der so behandelte Werkstoff weist nun eine geringe Dehngrenze und Zugfestigkeit auf. Um diese Eigenschaften auf den gewünschten Wert zu heben, wird anschliessend eine Warmauslagerung durchgeführt. Diese kann auch prozessbedingt erfolgen, z.B. durch eine thermische Beaufschlagung beim Lackieren oder durch das Entspannungsglühen einer ganzen Bauteilgruppe.Due to the further development of die casting technology, it is now possible to weld and manufacture heat-treatable castings of high quality. This has the Application area for die-cast parts extended to safety-relevant components. AlSiMg alloys are usually used for such components today used because they have good castability with little mold wear. So that the required mechanical properties, especially a high one Elongation at break, the castings must be heat treated be subjected. This heat treatment is for molding the casting phases and therefore necessary to achieve tough fracture behavior. A heat treatment usually means solution annealing at temperatures scarce below the solidus temperature with subsequent quenching in water or another medium at temperatures <100 ° C. The material treated in this way now has a low yield strength and tensile strength. To these properties Warming up to the desired value is then followed by hot aging carried out. This can also be done depending on the process, e.g. through a thermal Exposure during painting or through the relaxation annealing of a whole Component group.

Da Druckgussstücke endabmessungsnah gegossen werden, haben sie meist eine komplizierte Geometrie mit dünnen Wandstärken. Während des Lösungsglühens und besonders beim Abschreckprozess muss mit Verzug gerechnet werden, der eine Nacharbeit z.B. durch Richten der Gussstücke oder im schlimmsten Fall Ausschuss nach sich ziehen kann. Die Lösungsglühung verursacht zudem zusätzliche Kosten und die Wirtschaftlichkeit dieser Produktionsmethode könnte wesentlich erhöht werden, wenn Legierungen zur Verfügung stehen würden, die die geforderten Eigenschaften ohne eine Wärmebehandlung erfüllen.Since die castings are cast close to their final dimensions, they usually have one complicated geometry with thin walls. During solution annealing and Especially in the quenching process, delays must be expected Rework e.g. by straightening the castings or, in the worst case, rejects can entail. Solution annealing also causes additional costs and the economy of this method of production could be increased significantly if alloys were available that would have the required properties meet without a heat treatment.

Es sind auch AIMg-Legierungen bekannt, die sich durch eine hohe Duktilität auszeichnen. Eine derartige Legierung ist beispielsweise in der US-A-5 573 606 offenbart. Diese Legierungen haben aber den Nachteil eines hohen Formenverschleisses und bringen Probleme beim Ausformen, was die Produktivität erheblich verringert.AIMg alloys are also known which are distinguished by a high ductility. Such an alloy is disclosed, for example, in US-A-5 573 606. However, these alloys have the disadvantage of high mold wear and cause molding problems, which significantly reduces productivity.

Aus der WO-A-9625528 sind Druckgusslegierungen aus Aluminium mit den wesentlichen Legierungselementen Magnesium, Mangan und Silizium bekannt.WO-A-9625528 are die-cast alloys made of aluminum known with the essential alloying elements magnesium, manganese and silicon.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, eine Druckgusslegierung mit hoher Bruchdehnung bei noch akzeptabler Dehngrenze zu schaffen, die eine gute Giessbarkeit aufweist und in der Form möglichst wenig klebt. Die folgenden Minimalwerte müssen im Gusszustand erreicht werden:
Dehnung (A5): 14%   Dehngrenze (Rp 0.2): 100 MPa The present invention is therefore based on the object of providing a die-casting alloy with a high elongation at break with an even acceptable yield strength, which has good castability and sticks as little as possible in the mold. The following minimum values must be achieved in the as-cast state:
Elongation (A5): 14% yield strength (Rp 0.2): 100 MPa

Die Legierung soll zudem gut schweissbar sein, einen hohen Korrosionswiderstand aufweisen und insbesondere keine Anfälligkeit für Spannungsrisskorrosion zeigen.The alloy should also be easy to weld, a high corrosion resistance and in particular show no susceptibility to stress corrosion cracking.

Zur erfindungsgemässen Lösung führt eine Legierung mit den Merkmalen von Anspruch 1.An alloy with the features of claim 1 leads to the solution according to the invention.

Der zur Herstellung der Legierung verwendete Reinheitsgrad des Aluminiums entspricht einem Hütten-Aluminium der Qualität Al 99.8 H.The one used to make the alloy The degree of purity of the aluminum corresponds to a smelting aluminum quality Al 99.8 H.

Diese Legierung weist im Gusszustand eine gut eingeformte α-Phase auf. Das Eutektikum, überwiegend bestehend aus Mg2Si- und Al6Mn-Phasen, ist sehr fein ausgebildet und führt daher zu einem hochduktilen Bruchverhalten. Durch den Anteil an Mangan wird das Kleben in der Form vermieden und eine gute Entformbarkeit gewährleistet. Der Magnesiumgehalt in Verbindung mit Mangan gibt dem Gussstück eine hohe Gestaltsfestigkeit, so dass auch beim Entformen mit sehr geringem bis gar keinem Verzug zu rechnen istThis alloy has a well molded α phase in the as-cast state. The eutectic, mainly consisting of Mg 2 Si and Al 6 Mn phases, is very fine and therefore leads to a highly ductile fracture behavior. The manganese content prevents sticking in the mold and ensures good mold release. The magnesium content in connection with manganese gives the casting a high level of design stability, so that very little or no distortion can be expected even when demolding

Aufgrund der bereits eingeformten α-Phase lässt sich diese Legierung auch für das Thixocasting bzw. Thixoschmieden einsetzen. Die α-Phase formt sich beim Wiederaufschmelzen sofort ein, so dass hervorragende thixotrope Eigenschaften vorliegen. Due to the already molded α phase, this alloy can also be used for Use thixocasting or thixo forging. The α phase forms when it melts again immediately, so that excellent thixotropic properties are available.

Bei den üblichen Aufheizgeschwindigkeiten wird eine Komgrösse von <100µm erzeugt.At the usual heating speeds, a grain size of <100 µm is generated.

Zur Erzielung einer hohen Duktilität ist von wesentlicher Bedeutung, dass der Eisengehalt in der Legierung möglichst tief gehalten wird. Überraschenderweise hat sich gezeigt, dass die erfindungsgemässe Legierungszusammensetzung trotz geringem Eisengehalt nicht zum Kleben in der Form neigt Entgegen der allgemeinen Ansicht, dass mit hohen Eisengehalten ein Kleben in der Form in jedem Fall verhindert werden kann, hat sich beim erfindungsgemäss vorgeschlagenen Legierungstyp herausgestellt, dass bei Erhöhung des Eisengehalts auf mehr als 0.4 Gew.-% bereits wieder eine Zunahme der Klebeneigung beobachtet wird.To achieve high ductility it is essential that the iron content is kept as deep as possible in the alloy. Surprisingly, has shown that the alloy composition according to the invention despite low Iron content does not tend to stick in the mold Contrary to popular belief that with high iron contents, sticking in the mold is prevented in any case has been found in the alloy type proposed according to the invention, that when the iron content is increased to more than 0.4% by weight again an increase in the tendency to stick is observed.

Für die einzelnen Legierungselemente werden die folgenden Gehaltsbereiche bevorzugt: Magnesium 2.5 bis 3.3 Gew.-%, insbesondere 2.6 bis 3.3 Gew.-% Silizum 0.20 bis 0.30 Gew.-% Mangan 0.40 bis 1.2 Gew.-%, insbesondere 0.50 bis 1.0 Gew.-% Eisen max. 0.30 Gew.-%, insbesondere max. 0.15 Gew.-% The following content ranges are preferred for the individual alloy elements: magnesium 2.5 to 3.3% by weight, in particular 2.6 to 3.3% by weight Silizum 0.20 to 0.30% by weight manganese 0.40 to 1.2% by weight, in particular 0.50 to 1.0% by weight iron Max. 0.30% by weight, in particular max. 0.15% by weight

Durch den Zusatz von Cobalt und/oder Cer wird die Klebeneigung des Gussstücks in der Form drastisch vermindert und das Ausformverhalten wesentlich verbessert, so dass der Gehalt an Mangan herabgesetzt werden kann. Die Legierung enthält daher 0.10 bis 0.60 Gew.-%, insbesondere 0.30 bis 0.60 Gew.% Cobalt und/oder 0.05 bis 0.80 Gew.-%, insbesondere 0.10 bis 0.50 Gew.-% Cer. Eine optimale Wirkung wird dann erreicht, wenn die Summe der Gehalte an Cobalt, Cer und Mangan in der Legierung mindestens 0.80 Gew.-% beträgt und die Legierung mindestens 0.50 Gew.-% Mangan enthält.By adding cobalt and / or cerium, the tendency of the casting to stick in the mold is drastically reduced and the molding behavior is significantly improved so that the manganese content can be reduced. The alloy therefore contains 0.10 to 0.60 % By weight, in particular 0.30 to 0.60% by weight of cobalt and / or 0.05 to 0.80% by weight, in particular 0.10 to 0.50% by weight of cerium. An optimal effect is achieved if the sum of the cobalt, cerium and manganese contents in the alloy at least Is 0.80% by weight and the alloy contains at least 0.50% by weight of manganese.

Die erfindungsgemässe Aluminium-Gusslegierung eignet sich besonders gut für das Thixocasting bzw. Thixoschmieden.The aluminum casting alloy according to the invention is particularly suitable for this Thixocasting or thixo forging.

Obwohl die erfindungsgemässe Aluminium-Gusslegierung insbesondere zur Verarbeitung im Druckguss vorgesehen ist, kann sie selbstverständlich auch mit anderen Verfahren vergossen werden, z.B.

  • Sandguss
  • Schwerkraftkokillenguss
  • Niederdruckguss
  • Thixocasting/Thixoschmieden
  • Squeeze casting
    • Although the aluminum casting alloy according to the invention is intended in particular for processing in die casting, it can of course also be cast using other methods, for example
  • sand casting
  • gravity die
  • Low-pressure casting
  • Thixocasting / Thixoforging
  • Squeeze casting

    • Die grössten Vorteile ergeben sich jedoch bei Giessverfahren, die mit hohen Abkühlungsgeschwindigkeiten ablaufen, wie beispielsweise beim Druckgiessverfahren.The greatest advantages, however, are found in casting processes with high cooling rates run, such as in the die casting process.

    Weitere Vorteile, Merkmale und Einzelheiten der erfindungsgemässen Aluminium-Gusslegierung sowie deren hervorragende Eigenschaften ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele.Further advantages, features and details of the aluminum casting alloy according to the invention as well as their excellent properties result from the following description of preferred embodiments.

    BeispieleExamples

    Aus vier verschiedenen Legierungen wurde auf einer Druckguss-Maschine mit 400 t Schliesskraft jeweils ein Topf mit einer Wanddicke von 3 mm und den Abmessungen 120 x 120 x 60 mm gegossen. Aus den Seitenteilen wurden Probestäbe für Zugversuche herausgearbeitet und an diesen die mechanischen Eigenschaften im Gusszustand gemessen. Die Ergebnisse sind in der nachstehenden Tabelle zusammengefasst. Hierbei bedeuten Rp0.2 die Dehngrenze, Rm die Zugfestigkeit und A5 die Bruchdehnung. Bei den angegebenen Messwerten handelt es sich um Mittelwerte aus 10 Einzelmessungen. Die Legierungen wurden auf der Basis Hütten-Aluminium der Qualität Al 99.8H erschmolzen.Four different alloys were used on a die casting machine weighing 400 t Closing force in each case a pot with a wall thickness of 3 mm and the dimensions Cast 120 x 120 x 60 mm. Test pieces for tensile tests were made from the side parts worked out and on these the mechanical properties in the as-cast state measured. The results are summarized in the table below. Rp0.2 mean the yield strength, Rm the tensile strength and A5 the Elongation at break. The stated measured values are average values 10 single measurements. The alloys were based on the smelter aluminum Quality Al 99.8H melted.

    Die Versuche zeigen, dass mit der erfindungsgemässen Aluminium-Gusslegierung die bezüglich der Dehngrenze und der Bruchdehnung geforderten Minimalwerte im Gusszustand erreicht werden.The tests show that with the aluminum casting alloy according to the invention with regard to the yield strength and the elongation at break required minimum values in the as-cast state can be achieved.

    Die Legierung ist gut schweissbar, zeigt ein ausgezeichnetes Giessverhalten, eine praktisch vemachlässigbare Klebeneigung und lässt sich gut ausformen. Legierung 1 Legierung 2 Legierung 3 Legierung 4 Si [Gew.-%] 0.25 0.25 0.25 0.23 Fe [Gew.-%] 0.25 0.10 0.07 0.10 Mn [Gew.-%] 0.80 0.80 0.77 0.78 Mg [Gew.-%] 2.90 2.40 2.34 2.35 Ce [Gew.-%] - 0.40 0.20 - Co [Gew.-%] 0.30 - - - Rp0.2[N/mm2] 130 107 120 129 Rm [N/mm2] 250 219 205 218 A5 [%] 19.0 20.9 16.3 20.0 The alloy is easy to weld, shows excellent casting behavior, a practically negligible tendency to stick and can be shaped well. Alloy 1 Alloy 2 Alloy 3 Alloy 4 Si [% by weight] 00:25 00:25 00:25 00:23 Fe [% by weight] 00:25 00:10 00:07 00:10 Mn [% by weight] 0.80 0.80 0.77 0.78 Mg [% by weight] 2.90 2:40 2:34 2:35 Ce [% by weight] - 00:40 00:20 - Co [wt%] 00:30 - - - Rp0.2 [N / mm 2 ] 130 107 120 129 Rm [N / mm 2 ] 250 219 205 218 A5 [%] 19.0 20.9 16.3 20.0

    Claims (10)

    1. Aluminium casting alloy consisting of:
      2.0 to 3.5 w.% magnesium
      0.15 to 0.35 w.% silicon
      0.20 to 1.2 w.% manganese
      max. 0.40 w.% iron
      max. 0.10 w.% copper
      max. 0.05 w.% chromium
      max. 0.10 w.% zinc
      max. 0.003 w.% beryllium
      max. 0.20 w.% titanium
      0.10 to 0.60 w.% cobalt and/or
      0.05 to 0.80 w.% cerium
      and aluminium as the remainder with further impurities individually max. 0.02 w.%, total max. 0.2 w.%.
    2. Aluminium casting alloy according to claim 1, characterized in that the alloy contains 2.5 to 3.3 w.%, in particular 2.6 to 3.3 w.%, magnesium.
    3. Aluminium casting alloy according to claim 1 or 2, characterized in that the alloy contains 0.20 to 0.30 w.% silicon.
    4. Aluminium casting alloy according to any of claims 1 to 3, characterized in that the alloy contains 0.40 to 1.2 w.%, in particular 0.50 to 1.0 w.%, manganese.
    5. Aluminium casting alloy according to any of claims 1 to 4, characterized in that the alloy contains max. 0.30 w.%, in particular max. 0.15 w.%, iron.
    6. Aluminium casting alloy according to any of claims 1 to 5, characterized in that the alloy contains 0.30 to 0.60 w.% cobalt.
    7. Aluminium casting alloy according to any of claims 1 to 6, characterized in that the alloy contains 0.10 to 0.50 w.%, cerium.
    8. Aluminium casting alloy according to claim 6 or 7, characterized in that the total content of cobalt, cerium and manganese in the alloy is min. 0.80 w.% and the alloy contains min. 0.50 w.% manganese.
    9. Aluminium casting alloy according to any of claims 1 to 8, characterized in that the alloy, as a diecasting alloy in the casting state, has a yield strength (RpO.2) of min. 100 MPa and an elongation (A5) of min. 14%.
    10. Use of an aluminium alloy according to any of claims 1 to 9 for diecasting, thixocasting or thixoforging.
    EP98810210A 1997-10-08 1998-03-12 Aluminium casting alloy Expired - Lifetime EP0911420B1 (en)

    Priority Applications (4)

    Application Number Priority Date Filing Date Title
    EP98810210A EP0911420B1 (en) 1997-10-08 1998-03-12 Aluminium casting alloy
    US09/163,822 US6309481B1 (en) 1997-10-08 1998-09-30 Aluminum casting alloy
    BR9803822-2A BR9803822A (en) 1997-10-08 1998-10-07 Die-cast aluminum alloy
    CA002249762A CA2249762A1 (en) 1997-10-08 1998-10-07 Aluminium casting alloy

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    EP97810756A EP0908527A1 (en) 1997-10-08 1997-10-08 Aluminium casting alloy
    EP97810756 1997-10-08
    EP98810210A EP0911420B1 (en) 1997-10-08 1998-03-12 Aluminium casting alloy

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    EP0911420A1 EP0911420A1 (en) 1999-04-28
    EP0911420B1 true EP0911420B1 (en) 2002-04-24

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    EP (1) EP0911420B1 (en)
    BR (1) BR9803822A (en)
    CA (1) CA2249762A1 (en)

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    EP1118686B1 (en) * 2000-01-19 2003-09-17 ALUMINIUM RHEINFELDEN GmbH Aluminium cast alloy
    EP1118685A1 (en) 2000-01-19 2001-07-25 ALUMINIUM RHEINFELDEN GmbH Aluminium cast alloy
    DE10116636C2 (en) * 2001-04-04 2003-04-03 Vaw Ver Aluminium Werke Ag Process for the production of AIMn strips or sheets
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    BR9803822A (en) 1999-12-14
    CA2249762A1 (en) 1999-04-08
    US6309481B1 (en) 2001-10-30
    EP0911420A1 (en) 1999-04-28

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