EP1443122A1 - Die cast aluminium alloy - Google Patents

Die cast aluminium alloy Download PDF

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Publication number
EP1443122A1
EP1443122A1 EP04405023A EP04405023A EP1443122A1 EP 1443122 A1 EP1443122 A1 EP 1443122A1 EP 04405023 A EP04405023 A EP 04405023A EP 04405023 A EP04405023 A EP 04405023A EP 1443122 A1 EP1443122 A1 EP 1443122A1
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Prior art keywords
aluminum
aluminum alloy
ppm
alloy according
max
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German (de)
French (fr)
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EP1443122B1 (en
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Hubert Koch
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Aluminium Rheinfelden GmbH
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Aluminium Rheinfelden GmbH
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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
    • 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

Definitions

  • the invention relates to an aluminum alloy for die casting components with high elongation in the as-cast state.
  • Die casting technology has developed so far today that it is possible Manufacture components with high quality standards.
  • the quality of a die cast part depends not only on the machine setting and the selected one Process, but also to a large extent on the chemical composition and the structure of the aluminum alloy used. These last two 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 ", Giessereiforschung 42, 1990, pp. 88/89), the mechanical properties and - particularly important for 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).
  • the die-cast parts usually have to be achieved be subjected to a heat treatment.
  • This heat treatment is for molding the casting phases and thus achieving a tough Breaking behavior necessary.
  • Heat treatment usually means one Solution annealing at temperatures just below the solidus temperature subsequent quenching in water or other medium to temperatures ⁇ 100 ° C.
  • the material treated in this way now has a low proof stress and tensile strength. To get these properties to the one you want Warming is then carried out to increase the value.
  • This can also be process-related, e.g. through a thermal load when painting or by relaxing annealing an entire component group.
  • EP-A-0 687 742 An AlSi alloy with good mechanical properties in the as-cast state is out EP-A-0 687 742. Also are, for example, from EP-A-0 911 420 Alloys of the AIMg type are known which have a very high ductility when cast have, but with complicated shape design to warm or cold cracks tend and are therefore unsuitable. Another disadvantage of ductile die casting alloys is their slow aging in the as-cast state, which is a temporal Change in mechanical properties - including a loss of stretch - can result. This behavior is tolerated in many applications since the property limits are not exceeded or fallen short of, not tolerable in some applications and can only be achieved through targeted heat treatment turned off.
  • the invention has for its object a suitable for die casting To provide aluminum alloy that is very easy to cast, in the as-cast state has a high elongation and does not age after casting. About that In addition, the alloy should be easy to weld and flare, riveted can and have a high corrosion resistance.
  • the object is achieved with an aluminum alloy 8.5 to 10.5% by weight silicon 0.3 to 0.8 wt% manganese Max. 0.06 wt% magnesium Max. 0.15 wt% iron Max. 0.03 wt% copper Max. 0.10 wt% zinc Max.
  • the stretch can be improved even further.
  • the preferred salary is at 0.15 to 0.20% by weight Zr.
  • the relatively large proportion of eutectic silicon is refined by strontium. Compared to granular die-cast alloys with higher impurities the alloy according to the invention also has advantages in terms of fatigue strength.
  • the fracture toughness is due to the very small presence Mixed crystals and the refined eutectic are higher.
  • the strontium content is preferably between 50 and 150 ppm and generally should not be below 50 ppm drop, otherwise the casting behavior can be impaired. Instead of of strontium sodium and / or calcium can be added.
  • the limitation of the magnesium content to preferably max. 0.05% by weight Mg has the effect that the eutectic structure and the alloy are not coarsened has no curing potential, which contributes to high elongation.
  • the proportion of manganese prevents sticking in the mold and one good demoldability guaranteed.
  • the manganese content gives the casting one high dimensional stability at elevated temperature, so that when demolding with very little to no delay is to be expected.
  • the alloy according to the invention can be riveted in the as-cast state.
  • the alloy according to the invention is preferably used as a horizontal continuous casting mass manufactured. It can be used without complex melt cleaning Die casting alloy with low oxide contamination are melted: one important prerequisite for achieving high elongation values in the die-cast part.
  • AlSi alloy When melting, any contamination of the melt, especially through Avoid copper or iron.
  • the cleaning of the permanently refined according to the invention AlSi alloy is preferably carried out by means of a purge gas treatment with inert gases using an impeller.
  • Grain refinement is preferably carried out in the alloy according to the invention.
  • the alloy can be gallium phosphide and / or indium phosphide in an amount corresponding to 1 to 250 ppm, preferably 1 to 30 ppm phosphorus are fed.
  • the alloy can be used for grain refinement also contain titanium and boron, with the addition of titanium and boron over a master alloy with 1 to 2% by weight of Ti and 1 to 2% by weight of B, the rest being aluminum, he follows.
  • the aluminum master alloy preferably contains 1.3 to 1.8% by weight of Ti and 1.3 to 1.8 wt% B and has a Ti / B weight ratio of about 0.8 up to 1.2.
  • the content of the master alloy in the alloy according to the invention is preferably set to 0.05 to 0.5% by weight.
  • the aluminum alloy according to the invention is particularly suitable for production of safety components in the die casting process.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Forging (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Mold Materials And Core Materials (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Body Structure For Vehicles (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Abstract

Aluminum alloy contains (in wt.%) 8.5-10.5 silicon, 0.3-0.8 manganese, maximum 0.06 magnesium, maximum 0.15 iron, maximum 0.03 copper, maximum 0.10 zinc, maximum 0.15 titanium, 0.05-0.5 molybdenum, 30-300 ppm strontium or 5-30 ppm sodium and/or 1-30 ppm calcium for permanent modification, and optionally 0.05-0.3 zirconium, gallium phosphide and/or indium phosphide in a quantity corresponding to 1-250 ppm phosphorous for particle fineness, titanium and boron added via an aluminum pre-alloy with 1-2 titanium and 1-2 boron for particle fineness, and aluminum and unavoidable impurities.

Description

Die Erfindung betrifft eine Aluminiumlegierung zum Druckgiessen von Bauteilen mit hoher Dehnung im Gusszustand.The invention relates to an aluminum alloy for die casting components with high elongation in the as-cast state.

Die Druckgiesstechnik hat sich heute soweit entwickelt, dass es möglich ist, Bauteile mit hohen Qualitätsansprüchen herzustellen. Die Qualität eines Druckgussteils 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 Aluminiumlegierung. 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 -- beim Druckgiessen 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 Manufacture components with high quality standards. The quality of a die cast part depends not only on the machine setting and the selected one Process, but also to a large extent on the chemical composition and the structure of the aluminum alloy used. These last two 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 ", Giessereiforschung 42, 1990, pp. 88/89), the mechanical properties and - particularly important for 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 das Druckgiessen anspruchsvoller Bauteile geeigneten Aluminiumlegierungen einige Aufmerksamkeit geschenkt. Gerade von Konstrukteuren der Automobilindustrie wird immer mehr gefordert, z. B. schweissbare Bauteile mit hoher Duktilität im Druckguss zu realisieren, da bei hohen Stückzahlen das Druckgiessen die kostengünstigste Produktionsmethode darstellt.In the past, the development of specially for die casting aluminum alloy suitable for demanding components given. Especially by designers in the automotive industry increasingly demanded, e.g. B. weldable components with high ductility in To realize die casting, because with large quantities die casting is the most cost-effective Represents production method.

Durch die Weiterentwicklung der Druckgiesstechnik ist es heute möglich, schweissbare Bauteile von hoher Qualität herzustellen. Dies hat den Anwendungsbereich für Druckgussteile auf Komponenten im Chassis erweitert.
Der Duktilität kommt gerade bei kompliziert gestalteten Teilen immer mehr Bedeutung zu.Thanks to the further development of die casting technology, it is now possible to manufacture weldable components of high quality. This has expanded the application area for die-cast parts to components in the chassis.
Ductility is becoming more and more important, especially for parts with complicated designs.

Damit die geforderten mechanischen Eigenschaften, insbesondere eine hohe Bruchdehnung, erreicht werden können, müssen die Druckgussteile üblicherweise 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.So that the required mechanical properties, especially a high one Elongation at break, the die-cast parts usually have to be achieved be subjected to a heat treatment. This heat treatment is for molding the casting phases and thus achieving a tough Breaking behavior necessary. Heat treatment usually means one Solution annealing at temperatures just below the solidus temperature subsequent quenching in water or other medium to temperatures <100 ° C. The material treated in this way now has a low proof stress and tensile strength. To get these properties to the one you want Warming is then carried out to increase the value. This can also be process-related, e.g. through a thermal load when painting or by relaxing annealing an entire component group.

Da Druckgussteile 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 Gussteile 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, welche die geforderten Eigenschaften ohne eine Wärmebehandlung erfüllen.Since die-cast parts 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, a rework e.g. by straightening the castings or at worst Case can result in rejects. Solution annealing also causes additional costs and the economics of this production method could be significantly increased if alloys were available, which meet the required properties without heat treatment.

Eine AlSi-Legierung mit guten mechanischen Werten im Gusszustand ist aus der EP-A-0 687 742 bekannt. Auch sind beispielsweise aus der EP-A-0 911 420 Legierungen vom Typ AIMg bekannt, die im Gusszustand eine sehr hohe Duktilität aufweisen, bei kompliziertem Form-Design aber zu Warm- oder Kaltrissen neigen und deshalb ungeeignet sind. Ein weiterer Nachteil duktiler Druckgusslegierungen ist deren langsame Alterung im Gusszustand, was eine zeitliche Veränderung der mechanischen Eigenschaften -- u.a. ein Verlust an Dehnung -- zur Folge haben kann. Dieses Verhalten wird bei vielen Anwendungen toleriert, da die Eigenschaftsgrenzen nicht über- oder unterschritten werden, ist aber bei einigen Anwendungen nicht tolerierbar und kann nur durch eine gezielte Wärmebehandlung ausgeschaltet werden.An AlSi alloy with good mechanical properties in the as-cast state is out EP-A-0 687 742. Also are, for example, from EP-A-0 911 420 Alloys of the AIMg type are known which have a very high ductility when cast have, but with complicated shape design to warm or cold cracks tend and are therefore unsuitable. Another disadvantage of ductile die casting alloys is their slow aging in the as-cast state, which is a temporal Change in mechanical properties - including a loss of stretch - can result. This behavior is tolerated in many applications since the property limits are not exceeded or fallen short of, not tolerable in some applications and can only be achieved through targeted heat treatment turned off.

Der Erfindung liegt die Aufgabe zugrunde, eine zum Druckgiessen geeignete Aluminiumlegierung bereitzustellen, die sehr gut giessbar ist, im Gusszustand eine hohe Dehnung aufweist und nach dem Giessen nicht mehr altert. Darüber hinaus soll die Legierung gut schweissbar und bördelbar sein, genietet werden können und eine hohe Korrosionsbeständigkeit aufweisen.The invention has for its object a suitable for die casting To provide aluminum alloy that is very easy to cast, in the as-cast state has a high elongation and does not age after casting. About that In addition, the alloy should be easy to weld and flare, riveted can and have a high corrosion resistance.

Erfindungsgemäss wird die Aufgabe gelöst durch eine Aluminiumlegierung mit
8,5 bis 10,5 Gew.-% Silizium
0,3 bis 0,8 Gew.-% Mangan
max. 0.06 Gew.-% Magnesium
max. 0,15 Gew.-% Eisen
max. 0,03 Gew.-% Kupfer
max. 0,10 Gew.-% Zink
max. 0,15 Gew.-% Titan
0,05 bis 0.5 Gew.-% Molybdän
30 bis 300 ppm Strontium oder 5 bis 30 ppm Natrium und/oder 1 bis 30 ppm Calcium zur Dauerveredelung;
wahlweise noch
0,05 bis 0.3 Gew.-% Zirkonium
Galliumphosphid und/oder Indiumphosphid in einer Menge entsprechend 1 bis 250 ppm Phosphor zur Kornfeinung
Titan und Bor, zugegeben über eine Aluminium-Vorlegierung mit 1 bis 2 Gew.-% Ti und 1 bis 2 Gew.-% B, zur Kornfeinung;
und als Rest Aluminium und unvermeidbare Verunreinigungen. According to the invention, the object is achieved with an aluminum alloy
8.5 to 10.5% by weight silicon
0.3 to 0.8 wt% manganese
Max. 0.06 wt% magnesium
Max. 0.15 wt% iron
Max. 0.03 wt% copper
Max. 0.10 wt% zinc
Max. 0.15 wt% titanium
0.05 to 0.5 wt% molybdenum
30 to 300 ppm strontium or 5 to 30 ppm sodium and / or 1 to 30 ppm calcium for permanent upgrading;
optionally still
0.05 to 0.3% by weight of zirconium
Gallium phosphide and / or indium phosphide in an amount corresponding to 1 to 250 ppm phosphorus for grain refinement
Titanium and boron, added via an aluminum master alloy with 1 to 2 wt.% Ti and 1 to 2 wt.% B, for grain refinement;
and the balance aluminum and unavoidable impurities.

Mit der erfindungsgemässen Legierungszusammensetzung lässt sich bei Druckgussteilen im Gusszustand bei guten Werten für die Dehngrenze und die Zugfestigkeit eine hohe Dehnung erzielen, so dass die Legierung insbesondere zur Herstellung von Sicherheitsbauteilen im Automobilbau geeignet ist. Überraschenderweise hat sich gezeigt, dass durch eine Zugabe von Molybdän die Dehnung ohne Einbusse bei den anderen mechanischen Eigenschaften nochmals angehoben werden kann. Die gewünschte Wirkung wird mit einer Zugabe von 0,05 bis 0.5 Gew.-% Mo erreicht, der bevorzugte Gehalt liegt bei 0,08 bis 0,25 Gew.-% Mo.With the alloy composition according to the invention, Die-cast parts in the as-cast state with good values for the yield strength and the Tensile strength achieve high elongation, so the alloy in particular is suitable for the production of safety components in automotive engineering. Surprisingly has been shown that the addition of molybdenum Elongation without loss in the other mechanical properties again can be raised. The desired effect is achieved with an addition of 0.05 to 0.5% by weight of Mo is reached, the preferred content is 0.08 to 0.25% by weight Mo.

Mit einer kombinierten Zugabe von Molybdän und 0,05 bis 0,3 Gew.-% Zr kann die Dehnung sogar noch weiter verbessert werden. Der bevorzugte Gehalt liegt bei 0,15 bis 0,20 Gew.-% Zr.With a combined addition of molybdenum and 0.05 to 0.3 wt% Zr can the stretch can be improved even further. The preferred salary is at 0.15 to 0.20% by weight Zr.

Der relativ grosse Anteil eutektischen Siliziums wird durch Strontium veredelt. Gegenüber körnigen Druckgusslegierungen mit höheren Verunreinigungen besitzt die erfindungsgemässe Legierung auch Vorteile hinsichtlich der Dauerschwingfestigkeit. Die Risszähigkeit ist aufgrund der sehr klein vorliegenden Mischkristalle und des veredelten Eutektikums höher. Der Strontiumgehalt liegt bevorzugt zwischen 50 und 150 ppm und sollte im allgemeinen nicht unter 50 ppm fallen, da sonst das Giessverhalten verschlechtert werden kann. Anstelle von Strontium kann Natrium und/oder Calcium zugegeben werden.The relatively large proportion of eutectic silicon is refined by strontium. Compared to granular die-cast alloys with higher impurities the alloy according to the invention also has advantages in terms of fatigue strength. The fracture toughness is due to the very small presence Mixed crystals and the refined eutectic are higher. The strontium content is preferably between 50 and 150 ppm and generally should not be below 50 ppm drop, otherwise the casting behavior can be impaired. Instead of of strontium sodium and / or calcium can be added.

Die Beschränkung des Magnesiumgehaltes auf vorzugsweise max. 0,05 Gew.-% Mg bewirkt, dass das eutektische Gefüge nicht vergröbert wird und die Legierung kein Aushärtungspotential hat, was zu einer hohen Dehnung beiträgt.The limitation of the magnesium content to preferably max. 0.05% by weight Mg has the effect that the eutectic structure and the alloy are not coarsened has no curing potential, which contributes to high elongation.

Durch den Anteil an Mangan wird das Kleben in der Form vermieden und eine gute Entformbarkeit gewährleistet. Der Mangangehalt gibt dem Gussteil eine hohe Gestaltfestigkeit bei erhöhter Temperatur, so dass beim Entformen mit sehr geringem bis gar keinem Verzug zu rechnen ist. The proportion of manganese prevents sticking in the mold and one good demoldability guaranteed. The manganese content gives the casting one high dimensional stability at elevated temperature, so that when demolding with very little to no delay is to be expected.

Die erfindungsgemässe Legierung lässt sich im Gusszustand nieten.The alloy according to the invention can be riveted in the as-cast state.

Mit einer Stabilisierungsglühung während 1 bis 2 h in einem Temperaturbereich von etwa 280 bis 320° C können sehr hohe Dehnungswerte erreicht werden.With a stabilization annealing for 1 to 2 h in a temperature range Very high elongation values can be achieved from around 280 to 320 ° C.

Die erfindungsgemässe Legierung wird bevorzugt als Horizontal-Stranggussmassel hergestellt. Damit kann ohne aufwendige Schmelzereinigung eine Druckgusslegierung mit geringer Oxidverunreinigung erschmolzen werden: eine wichtige Voraussetzung zur Erzielung hoher Dehnungswerte im Druckgussteil.The alloy according to the invention is preferably used as a horizontal continuous casting mass manufactured. It can be used without complex melt cleaning Die casting alloy with low oxide contamination are melted: one important prerequisite for achieving high elongation values in the die-cast part.

Beim Einschmelzen ist jede Verunreinigung der Schmelze, insbesondere durch Kupfer oder Eisen, zu vermeiden. Die Reinigung der erfindungsgemässen dauerveredelten AlSi-Legierung erfolgt bevorzugt mittels einer Spülgasbehandlung mit inerten Gasen mittels Impeller.When melting, any contamination of the melt, especially through Avoid copper or iron. The cleaning of the permanently refined according to the invention AlSi alloy is preferably carried out by means of a purge gas treatment with inert gases using an impeller.

Bevorzugt wird bei der erfindungsgemässen Legierung eine Kornfeinung durchgeführt. Hierzu kann der Legierung Galliumphosphid und/oder Indiumphosphid in einer Menge entsprechend 1 bis 250 ppm, vorzugsweise 1 bis 30 ppm Phosphor zugeführt werden. Alternativ oder zusätzlich kann die Legierung zur Kornfeinung auch Titan und Bor enthalten, wobei die Zugabe von Titan und Bor über eine Vorlegierung mit 1 bis 2 Gew.-% Ti und 1 bis 2 Gew.-% B, Rest Aluminium, erfolgt. Bevorzugt enthält die Aluminium-Vorlegierung 1,3 bis 1,8 Gew.-% Ti und 1,3 bis 1,8 Gew.-% B und weist ein Ti/B-Gewichtsverhältnis von etwa 0,8 bis 1,2 auf. Der Gehalt der Vorlegierung in der erfindungsgemässen Legierung wird bevorzugt auf 0,05 bis 0,5 Gew.-% eingestellt.Grain refinement is preferably carried out in the alloy according to the invention. For this purpose, the alloy can be gallium phosphide and / or indium phosphide in an amount corresponding to 1 to 250 ppm, preferably 1 to 30 ppm phosphorus are fed. Alternatively or additionally, the alloy can be used for grain refinement also contain titanium and boron, with the addition of titanium and boron over a master alloy with 1 to 2% by weight of Ti and 1 to 2% by weight of B, the rest being aluminum, he follows. The aluminum master alloy preferably contains 1.3 to 1.8% by weight of Ti and 1.3 to 1.8 wt% B and has a Ti / B weight ratio of about 0.8 up to 1.2. The content of the master alloy in the alloy according to the invention is preferably set to 0.05 to 0.5% by weight.

Die erfindungsgemässe Aluminiumlegierung eignet sich insbesondere zur Herstellung von Sicherheitsbauteilen im Druckgiessverfahren.The aluminum alloy according to the invention is particularly suitable for production of safety components in the die casting process.

Claims (9)

Aluminiumlegierung zum Druckgiessen von Bauteilen mit hoher Dehnung im Gusszustand, mit
8,5 bis 10,5 Gew.-% Silizium
0,3 bis 0,8 Gew.-% Mangan
max. 0.06 Gew.-% Magnesium
max. 0,15 Gew.-% Eisen
max. 0,03 Gew.-% Kupfer
max. 0,10 Gew.-% Zink
max. 0,15 Gew.-% Titan
0,05 bis 0.5 Gew.-% Molybdän
30 bis 300 ppm Strontium oder 5 bis 30 ppm Natrium und/oder 1 bis 30 ppm Calcium zur Dauerveredelung;
wahlweise noch
0,05 bis 0.3 Gew.-% Zirkonium
Galliumphosphid und/oder Indiumphosphid in einer Menge entsprechend 1 bis 250 ppm Phosphor zur Kornfeinung
Titan und Bor, zugegeben über eine Aluminium-Vorlegierung mit 1 bis 2 Gew.-% Ti und 1 bis 2 Gew.-% B, zur Kornfeinung;
und als Rest Aluminium und unvermeidbaren Verunreinigungen.Aluminum alloy for die casting components with high elongation in the as-cast state, with
8.5 to 10.5% by weight silicon
0.3 to 0.8 wt% manganese
Max. 0.06 wt% magnesium
Max. 0.15 wt% iron
Max. 0.03 wt% copper
Max. 0.10 wt% zinc
Max. 0.15 wt% titanium
0.05 to 0.5 wt% molybdenum
30 to 300 ppm strontium or 5 to 30 ppm sodium and / or 1 to 30 ppm calcium for permanent upgrading;
optionally still
0.05 to 0.3% by weight of zirconium
Gallium phosphide and / or indium phosphide in an amount corresponding to 1 to 250 ppm phosphorus for grain refinement
Titanium and boron, added via an aluminum master alloy with 1 to 2 wt.% Ti and 1 to 2 wt.% B, for grain refinement;
and the balance aluminum and inevitable impurities. Aluminiumlegierung nach Anspruch 1, gekennzeichnet durch 50 bis 150 ppm Strontium.Aluminum alloy according to claim 1, characterized by 50 to 150 ppm strontium. Aluminiumlegierung nach Anspruch 1 oder 2, gekennzeichnet durch max. 0,05 Gew.-% Magnesium. Aluminum alloy according to claim 1 or 2, characterized by max. 0.05 wt% magnesium. Aluminiumlegierung nach einem der Ansprüche 1 bis 3, gekennzeichnet durch 0,10 bis 0,20 Gew.-% Zirkonium.Aluminum alloy according to one of claims 1 to 3, characterized by 0.10 to 0.20% by weight of zirconium. Aluminiumlegierung nach einem der Ansprüche 1 bis 4, gekennzeichnet durch 0,08 bis 0,25 Gew.-% Molybdän.Aluminum alloy according to one of claims 1 to 4, characterized by 0.08 to 0.25% by weight of molybdenum. Aluminiumlegierung nach einem der Ansprüche 1 bis 5, gekennzeichnet durch Galliumphosphid und/oder Indiumphosphid in einer Menge entsprechend 1 bis 30 ppm Phosphor.Aluminum alloy according to one of claims 1 to 5, characterized by gallium phosphide and / or indium phosphide in an amount corresponding to 1 to 30 ppm phosphorus. Aluminiumlegierung nach einem der Ansprüche 1 bis 6, gekennzeichnet durch eine Aluminium-Vorlegierung mit 1,3 bis 1,8 Gew.-% Titan und 1,3 bis 1,8 Gew.-% Bor und ein Titan/Bor-Gewichtsverhältnis zwischen 0,8 und 1,2.Aluminum alloy according to one of claims 1 to 6, characterized by an aluminum master alloy with 1.3 to 1.8 wt .-% titanium and 1.3 to 1.8 wt .-% boron and a titanium / boron weight ratio between 0 , 8 and 1.2. Aluminiumlegierung nach einem der Ansprüche 1 bis 7, gekennzeichnet durch 0,05 bis 0,5 Gew.-% Aluminium-Vorlegierung.Aluminum alloy according to one of claims 1 to 7, characterized by 0.05 to 0.5 wt .-% aluminum master alloy. Verwendung einer Aluminiumlegierung nach einem der Ansprüche 1 bis 8 zum Druckgiessen von Sicherheitsbauteilen im Automobilbau.Use of an aluminum alloy according to one of claims 1 to 8 for die-casting safety components in automotive engineering.
EP04405023A 2003-01-23 2004-01-12 Die cast aluminium alloy Expired - Lifetime EP1443122B1 (en)

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EP3124632A1 (en) * 2015-07-28 2017-02-01 Univerzita J. E. Purkyne v Usti nad Labem Aluminum alloy, in particular for the production of mould segment castings for forming tyres, and the method of heat treatment of mould segment castings.
CN109628802A (en) * 2019-02-21 2019-04-16 重庆南岸三洋电器设备有限公司 A kind of high efficiency, high torque (HT) aluflex
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CN1537961A (en) 2004-10-20
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BRPI0400079A (en) 2004-12-28
DK1443122T3 (en) 2009-11-30
US20040170523A1 (en) 2004-09-02
NO337610B1 (en) 2016-05-09
JP4970709B2 (en) 2012-07-11
PT1443122E (en) 2009-10-20
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JP2004225160A (en) 2004-08-12
NO20040286L (en) 2004-07-26

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