EP2657360A1 - Pressure cast alloy on an Al-Si basis, comprising secondary aluminium - Google Patents

Pressure cast alloy on an Al-Si basis, comprising secondary aluminium Download PDF

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Publication number
EP2657360A1
EP2657360A1 EP12165829.8A EP12165829A EP2657360A1 EP 2657360 A1 EP2657360 A1 EP 2657360A1 EP 12165829 A EP12165829 A EP 12165829A EP 2657360 A1 EP2657360 A1 EP 2657360A1
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Prior art keywords
die
alloy
weight
cast alloy
cast
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EP12165829.8A
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German (de)
French (fr)
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EP2657360B1 (en
Inventor
Jan Hauck
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AMAG CASTING GmbH
Audi AG
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AMAG CASTING GmbH
Audi AG
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Priority to SI201230032T priority Critical patent/SI2657360T1/en
Application filed by AMAG CASTING GmbH, Audi AG filed Critical AMAG CASTING GmbH
Priority to ES12165829.8T priority patent/ES2466345T3/en
Priority to EP12165829.8A priority patent/EP2657360B1/en
Priority to PL12165829T priority patent/PL2657360T3/en
Priority to PCT/EP2013/057521 priority patent/WO2013160108A2/en
Priority to US14/396,810 priority patent/US20150098859A1/en
Priority to CA2871260A priority patent/CA2871260C/en
Priority to CN201380022231.6A priority patent/CN104350165B/en
Publication of EP2657360A1 publication Critical patent/EP2657360A1/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002Castings of light metals
    • B22D21/007Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • C22C21/04Modified aluminium-silicon alloys

Definitions

  • the invention relates to a die-casting alloy based on Al-Si, comprising in particular secondary aluminum.
  • Inexpensive die-cast alloys can be obtained, for example, from aluminum scrap, but generally disadvantageously contain undesirably high impurities, in the form of iron, copper and zinc alloy fractions. This not only leads to a reduced ductility potential, but can also have negative effects on the strength and quench sensitivity of the die-cast alloy.
  • Various measures for mutual weighting of the alloying elements, as well as various proposals for alloys are known from the prior art - in particular in order to compensate for the negative influences of the impurities.
  • the DE102004013777B4 proposes a casting alloy with 5 to 18 wt .-% Si, with 0.15 to 0.45 wt .-% Mn, with 0.2 to 0.6 wt .-% Fe, with 0.3 to 0.5 wt % Mg, with possibly 0.1 to 0.5% by weight of Cu and with 4 to 5% by weight of Zn.
  • the content of a maximum of 0.5 wt .-% magnesium should avoid the formation of Mg-Fe-'pi'-phases, so as to obtain the ductility.
  • Cu is said to be the hot strength of the alloy in which the content of zinc should be limited to 4 to 5% by weight so as to adjust the strength and quenching sensitivity of the alloy.
  • Desweitern is from the DE102009012073A1 a die casting alloy with 9 to 11 wt .-% Si, with a maximum of 0.6 wt .-% Fe, with 0.2 to 0.6 wt .-% Mn, with 0.05 to 0.4 wt .-% Cu , with 0.2 to 0.35 wt .-% Mg and with a maximum of 0.35 wt .-% Zn known.
  • the DE102009012073A1 with secondary aluminum - due to the comparatively low lower limits of permissible Cu and Zn contents, the range of usable secondary aluminum is comparatively limited.
  • such a composition can not provide comparatively high strength, ductility and castability, especially since Zn as an impurity should be limited to a small extent.
  • Zn content in the diecasting alloy is to be kept below 0.05% by weight.
  • this die-casting alloy should be able to ensure both die casting and complex deformation, as well as excellent mold release, as well as excellent workability in the components produced from it.
  • the invention solves the task by the fact that the die-cast alloy 6 to 12 % By weight of silicon (Si), at least 0.3 % By weight of iron (Fe), at least 0.25 Wt .-% manganese (Mn), at least 0.1 Wt.% Copper (Cu), 0.24 to 0.8 Wt .-% magnesium (Mg) and 0.40 to 1.5 % By weight of zinc (Zn), the total proportion of Fe and Mn in the die-cast alloy together being a maximum of 1.5% by weight, the quotient of the percentages by weight of Fe and Mn 0.35 to 1.5 and the quotient of the percentages by weight of Cu and Mg 0.2 to 0, 8 amount.
  • a low-cost die-casting alloy can be provided on Al-Si basis, because essentially reduces the proportion of primary aluminum or . even refrained from it or that secondary aluminum can be used increased for the production of castings.
  • the alloy constituents of the cast alloy are forced into specific content limits in order to approximate the parameters known from primary aluminum (for example strength values, ductility values, chemical reaction resistance, processability and / or castability).
  • a diecasting alloy with a comparatively high ductility can thus be ensured.
  • this ratio of Fe / Mn combined with high cooling rates (For example: by accelerated cooling) whose phases and thus their influence on the microstructure can be kept relatively low.
  • the total content of Fe and Mn on the die casting alloy is limited to a maximum of 1.5% by weight, the formation of coarse ⁇ phases can be further reduced, even if the high cooling rates usually used in die casting processes are used.
  • the concentration requirements for Fe and Mn can therefore be particularly beneficial to the ductility of the diecasting alloy.
  • the existing copper in the preferably forming Q phase (Al 5 Cu 2 Mg 8 Si 6 ) are bound.
  • This concentration rule can therefore prevent the formation of corrosion-prone phases, such as the Tao phase (Al 5 Cu 4 Zn) or the theta phase (Al 2 Cu) in the microstructure, so that despite comparatively high weight percent of Cu, which according to the invention for the improvement the hot curing of the die-cast alloy is used, even a high corrosion resistance can be maintained.
  • this excess of magnesium can improve the curing mechanism of the alloy because part of the Mg is bound in the Q phase (Al 5 Cu 2 Mg 8 Si 6 ) and, in this regard, overcome known limitations due to excessive precipitation of Set Mg 2 Si pre-phases.
  • the concentration requirements for Cu and Mg can therefore satisfy particularly high demands of the diecasting alloy in terms of strength and chemical reaction resistance.
  • the proposed concentration ratio of Cu and Mg improved the processability, for example with regard to the weldability and rivability of components made from this diecasting alloy.
  • the introduction and / or adjustment of the aforementioned magnesium excess over Cu can also be used to bind the increased Fe content of the die-cast alloy in a pi phase (Al 8 FeMg 3 Si 6 ).
  • the ductility affecting ⁇ -phase eg: Al 5 FeSi / Al 8.9 Fe 2 Si 2
  • the Mn content in the diecasting alloy can also be reduced because the pi phase (eg: Al 8 FeMg 3 Si 6 ) can be used to take up Fe.
  • Die casting problems usually to be accepted due to an increased Mn content to compensate for Fe effects, can thus be reduced. A complex deformation as well as an excellent releasability can be ensured by the special content limits of Mg, Fe, Mn in connection with their concentration requirements.
  • the strength of the alloy can be further improved by solid solution hardening with the help of a zinc deposit.
  • zinc should be adjusted in the content limits of 0.40 to 1.5 wt .-%.
  • this may be beneficial to the ductility of the diecasting alloy.
  • the content limits of Zn according to the invention may be distinguished in improving the castability of the die-cast alloy, whereby adverse effects due to the proposed content limits of Mn in the diecasting alloy can be largely compensated.
  • the Al-Si-based die-casting alloy balanced in the alloy components Fe, Mn, Cu, Mg and Zn can combine a comparatively high ductility, corrosion resistance, strength, castability and workability with each other and thus overcome parameters known in the art, even if the die casting alloy has secondary aluminum and / or added thereto, resulting in comparatively high levels of impurities.
  • Strength, ductility, processability, and chemical reaction resistance of the die-cast alloy can be further improved when they contain 0.3 to 1.0 wt% Fe (Fe), 0.25 to 1.0 wt% Manganese (Mn), and 0 , 1 to 0.6 wt .-% copper (Cu).
  • the diecast alloy meets the order relation in its composition weight , - % mg > 0 . 2 + 0 . 12 ⁇ weight , - % Fe / weight , - % Mn a simple procedure for increasing the proportion of pi-phase (eg: Al 8 FeMg 3 Si 6 ) in the structure of the die-cast alloy can be given. Increased Fe contents can thus be compensated, whereby the best castability of the die-cast alloy can be maintained with a reduced Mn content.
  • this pi-phase can be converted with a solution annealing into a harmless for the required properties of the die-cast alloy ⁇ -phase.
  • the diecasting alloy can be further improved in terms of achievable ductility, strength and corrosion resistance, if the total content of Fe and Mn on the die-casting alloy together maximally 1.2 wt .-%, the quotient of the weight percentages of Fe and Mn 0.5 to 1 , 25 and the quotient of the weight percent of Cu and Mg is 0.2 to 0.5.
  • the die casting alloy has 9.5 to 11.5 wt.% Silicon (Si) and / or 0.35 to 0.6 wt.% Iron (Fe) and / or 0.3 to 0.75 wt. Manganese (Mn) and / or 0.1 to 0.4% by weight of copper (Cu) and / or 0.24 to 0.5% by weight of magnesium (Mg) and / or 0.40 to 1.0 zinc (Zn), resulting in narrower limit ranges for an Al-Si based through-casting alloy improved in mechanical and / or chemical resistance.
  • the proposed content of Si improves the flow properties of the melt and that brittle primary silicon phases can be avoided. This also makes it possible to pressure-mold even comparatively thin-walled components. 9.5 to 11.5% by weight of silicon (Si) may prove to be particularly advantageous for this purpose.
  • the die casting alloy may have 50 to 300 ppm strontium (Sr) and / or 20 to 250 ppm sodium (Na) and / or 20 to 350 ppm antimony (Sb).
  • Sr strontium
  • Na sodium
  • SB antimony
  • at most 0.2% by weight of titanium (Ti) and / or at most 0.3% by weight of zirconium and / or at most 0.3% by weight of vanadium (V) may prove to be advantageous.
  • the die-cast alloy can be supplemented in each case to 100% by weight with Al, and this die-casting alloy can also lead to unavoidable impurities due to its production.
  • the die-cast alloy can have impurities of not more than 0.1% by weight and not more than 1% by weight in total.
  • Alloy 1 is a die cast alloy of low contamination primary aluminum.
  • Alloy 2 shows a considerable degree of impurities in iron and copper alloy fractions, which can be introduced, for example, by secondary aluminum.
  • concentration ratios for a diecasting alloy proposed according to the invention make it possible to ensure comparatively high ductility, corrosion resistance, strength, castability and processability.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Conductive Materials (AREA)
  • Extrusion Of Metal (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Die casting alloy based on aluminum-silicon, comprises secondary aluminum, 6-12 wt.% silicon, at least 0.3 wt.% iron, at least 0.25 wt.% manganese, at least 0.1 wt.% copper, 0.24-0.8 wt.% magnesium and 0.40-1.5 wt.% zinc, where the total content of iron and manganese on the die casting alloy is maximum of 1.5 wt.%, and the weight ratio of iron and manganese is 0.35-1.5, and the weight ratio of copper and magnesium is 0.2-0.8.

Description

Die Erfindung betrifft eine Druckgusslegierung auf Al-Si-Basis, aufweisend insbesondere Sekundäraluminium.The invention relates to a die-casting alloy based on Al-Si, comprising in particular secondary aluminum.

Preiswerte Druckgusslegierungen können beispielsweise aus Aluminium-Schrotten gewonnen werden, enthalten in der Regel jedoch nachteilig unerwünscht hohe Verunreinigungen, in Form von Eisen-, Kupfer- und Zink-Legierungsanteilen. Dies führt nicht nur zu einem reduzierten Duktilitätspotential, sondern kann auch negative Einflüsse auf Festigkeit sowie Abschreckempfindlichkeit der Druckgusslegierung haben. Verschiedenste Maßnahmen zur gegenseitigen Gewichtung der Legierungselemente, sowie diverse Vorschläge für Zulegierungen sind aus dem Stand der Technik bekannt - insbesondere um damit die negativen Einflüsse der Verunreinigungen zu kompensieren.Inexpensive die-cast alloys can be obtained, for example, from aluminum scrap, but generally disadvantageously contain undesirably high impurities, in the form of iron, copper and zinc alloy fractions. This not only leads to a reduced ductility potential, but can also have negative effects on the strength and quench sensitivity of the die-cast alloy. Various measures for mutual weighting of the alloying elements, as well as various proposals for alloys are known from the prior art - in particular in order to compensate for the negative influences of the impurities.

So ist aus der JP9-003610 eine Druckgusslegierung mit 5 bis 13 Gew.-% Si, mit maximal 0,5 Gew.-% Mg, mit 0,1 bis 1,0 Gew.-% Mn und mit 0,1 bis 2,0 Gew.-% Fe bekannt. Mn soll dabei etwa die Ausbildung von Al-Fe-Si-Nadelkristallen unterdrücken, um eine Festigkeitsreduktion zu vermeiden. Des Weiteren soll, um die Gusseigenschaften zu erhalten, Mg auf einem möglichst geringen Gehalt von maximal 0,5 Gew.-% gehalten werden. Cu- und Zn-Verunreinigungen, wie diese bei Sekundäraluminium üblicherweise in erheblichen Mengen vorkommen, berücksichtigt die Druckgusslegierung in der JP9-00361 0 nicht.So is out of the JP9-003610 a die casting alloy containing 5 to 13 wt% Si, containing at most 0.5 wt% Mg, containing 0.1 to 1.0 wt% Mn and containing 0.1 to 2.0 wt% Fe known. Mn is intended to suppress the formation of Al-Fe-Si needle crystals, for example, in order to avoid a reduction in strength. Furthermore, in order to obtain the casting properties, Mg should be kept to a content as low as possible of at most 0.5% by weight. Cu and Zn impurities, such as these usually occur in significant amounts in secondary aluminum, takes into account the die-casting alloy in the JP9-00361 0 Not.

Die DE102004013777B4 schlägt eine Gusslegierung mit 5 bis 18 Gew.-% Si, mit 0,15 bis 0,45 Gew.-% Mn, mit 0,2 bis 0,6 Gew.-% Fe, mit 0,3 bis 0,5 Gew.-% Mg, mit eventuell 0,1 bis 0,5 Gew.-% Cu und mit 4 bis 5 Gew.-% Zn vor. Der Gehalt von maximal 0,5 Gew.-% Magnesium soll die Entstehung von Mg-Fe-'pi'-Phasen vermeiden, um damit die Dehnbarkeit zu erhalten. Cu soll die Warmfestigkeit der Legierung verbessern, wobei der Gehalt an Zink auf 4 bis 5 Gew.-% beschränkt werden soll, um so die Festigkeit und Abschreckempfindlichkeit der Legierung einzustellen. Nachteilig kann eine derartige Komposition an Legierungselementen, insbesondere durch den vergleichsweise hohen Zinkgehalt, jedoch eine geringe Korrosionsbeständigkeit aufweisen, was zu sicherheitstechnischen Einschränkungen von daraus hergestellten Druckgussteilen führen kann.The DE102004013777B4 proposes a casting alloy with 5 to 18 wt .-% Si, with 0.15 to 0.45 wt .-% Mn, with 0.2 to 0.6 wt .-% Fe, with 0.3 to 0.5 wt % Mg, with possibly 0.1 to 0.5% by weight of Cu and with 4 to 5% by weight of Zn. The content of a maximum of 0.5 wt .-% magnesium should avoid the formation of Mg-Fe-'pi'-phases, so as to obtain the ductility. Cu is said to be the hot strength of the alloy in which the content of zinc should be limited to 4 to 5% by weight so as to adjust the strength and quenching sensitivity of the alloy. A disadvantage of such a composition of alloying elements, in particular by the comparatively high zinc content, but have a low corrosion resistance, which can lead to safety limitations of die castings produced therefrom.

Desweitern ist aus der DE102009012073A1 eine Druckgusslegierung mit 9 bis 11 Gew.-% Si, mit maximal 0,6 Gew.-% Fe, mit 0,2 bis 0,6 Gew.-% Mn, mit 0,05 bis 0,4 Gew.-% Cu, mit 0,2 bis 0,35 Gew.-% Mg und mit maximal 0,35 Gew.-% Zn bekannt. Zwar beschäftigt sich die DE102009012073A1 mit Sekundäraluminium - durch die vergleichsweise niedrig angesetzten Untergrenzen an zulässigen Cu- und Zn-Gehalten ist die Bandbreite an verwendbarem Sekundäraluminium vergleichsweise beschränkt. Außerdem kann eine derartige Zusammensetzung keine vergleichsweise hohe Festigkeit, Duktilität und Gießbarkeit ermöglichen, zumal Zn als Verunreinigung auf ein geringes Maß begrenzt werden soll. Ähnliches ist auch aus der DE102005061668A1 bekannt, gemäß der der Zn-Gehalt in der Druckgusslegierung unter 0,05 Gew.-% zu halten ist.Desweitern is from the DE102009012073A1 a die casting alloy with 9 to 11 wt .-% Si, with a maximum of 0.6 wt .-% Fe, with 0.2 to 0.6 wt .-% Mn, with 0.05 to 0.4 wt .-% Cu , with 0.2 to 0.35 wt .-% Mg and with a maximum of 0.35 wt .-% Zn known. Although the DE102009012073A1 with secondary aluminum - due to the comparatively low lower limits of permissible Cu and Zn contents, the range of usable secondary aluminum is comparatively limited. In addition, such a composition can not provide comparatively high strength, ductility and castability, especially since Zn as an impurity should be limited to a small extent. The same is true of the DE102005061668A1 It is known that the Zn content in the diecasting alloy is to be kept below 0.05% by weight.

Es ist daher die Aufgabe der Erfindung, ausgehend vom eingangs geschilderten Stand der Technik, eine Druckgusslegierung auf Al-Si-Basis zu schaffen, die trotz Verwendung von Sekundäraluminium Druckgussteile mit hohen Ansprüchen hinsichtlich Festigkeit, Duktilität und chemischer Reaktionsbeständigkeit, insbesondere Korrosionsbeständigkeit, ermöglichen kann. Außerdem soll diese Druckgusslegierung druckgusstechnisch sowohl komplexes Verformen, als auch exzellente Entformbarkeit sicherstellen können sowie bei den daraus hergestellten Bauteilen exzellente Verarbeitbarkeit bieten.It is therefore an object of the invention, starting from the above-described prior art, to provide a die-casting alloy based on Al-Si, despite the use of secondary aluminum die castings with high demands in terms of strength, ductility and chemical reaction resistance, especially corrosion resistance. In addition, this die-casting alloy should be able to ensure both die casting and complex deformation, as well as excellent mold release, as well as excellent workability in the components produced from it.

Die Erfindung löst die gestellte Aufgabe dadurch, dass die Druckgusslegierung 6 bis 12 Gew.-% Silizium (Si), mindestens 0,3 Gew.-% Eisen (Fe), mindestens 0,25 Gew.-% Mangan (Mn), mindestens 0,1 Gew.-% Kupfer (Cu), 0,24 bis 0,8 Gew.-% Magnesium (Mg) und 0,40 bis 1,5 Gew.-% Zink (Zn) aufweist, wobei der Gesamtanteil von Fe und Mn an der Druckgusslegierung zusammen maximal 1,5 Gew.-%, der Quotient der Gewichtsprozente von Fe und Mn 0,35 bis 1,5 und der Quotient der Gewichtsprozente von Cu und Mg 0,2 bis 0,8 betragen.The invention solves the task by the fact that the die-cast alloy 6 to 12 % By weight of silicon (Si), at least 0.3 % By weight of iron (Fe), at least 0.25 Wt .-% manganese (Mn), at least 0.1 Wt.% Copper (Cu), 0.24 to 0.8 Wt .-% magnesium (Mg) and 0.40 to 1.5 % By weight of zinc (Zn), the total proportion of Fe and Mn in the die-cast alloy together being a maximum of 1.5% by weight, the quotient of the percentages by weight of Fe and Mn 0.35 to 1.5 and the quotient of the percentages by weight of Cu and Mg 0.2 to 0, 8 amount.

Durch ein Zulassen von vergleichsweise hohen Gew.-% an Verunreinigungen, wie dies erfindungsgemäß für Eisen, Kupfer und Zink auch vorgeschlagen wird, kann eine kostengünstige Druckgusslegierung auf Al-Si-Basis zur Verfügung gestellt werden, weil im Wesentlichen der Anteil an Primäraluminium reduziert bzw. sogar darauf verzichtet bzw. damit Sekundäraluminium zur Erzeugung von Gussteilen erhöht eingesetzt werden kann. Dies wird allerdings erst möglich, indem die Legierungsbestandteile der Gusslegierung erfindungsgemäß in besondere Gehaltsgrenzen gezwungen werden, um sich damit den von Primäraluminium bekannte Parametern (z.B.: Festigkeitswerte, Duktilitätswerte, chemische Reaktionsbeständigkeit, Verarbeitbarkeit und/oder Gießbarkeit) anzunähern.By allowing relatively high wt .-% of impurities, as proposed for iron, copper and zinc according to the invention also, a low-cost die-casting alloy can be provided on Al-Si basis, because essentially reduces the proportion of primary aluminum or . even refrained from it or that secondary aluminum can be used increased for the production of castings. However, this is only possible if the alloy constituents of the cast alloy are forced into specific content limits in order to approximate the parameters known from primary aluminum (for example strength values, ductility values, chemical reaction resistance, processability and / or castability).

Fe, Mn:Fe, Mn:

So kann ein Quotient der Gewichtsprozente von Fe und Mn 0,35 bis 1,5 dazu führen, dass trotz eines vergleichsweise hohen Eisengehaltes die Bildung der β-Phase (z.B.: Al5FeSi/Al89Fe2Si2) im Gefüge, welche sich in Form feiner Nadeln ausscheidet, deutlich verringert werden kann. Mit einem vermehrten Auftreten der α-Phase kann gerechnet werden, die aufgrund des erfindungsgemäßen Mangangehalts von mindestens 0,25 Gew.-% als Al15(FeMn)3Si2 vorliegen kann. Diese α-Phase kristallisiert in globulitischer Form und kann durch ihre kompakte Struktur einen deutlich günstigeren Einfluss auf die Duktilität nehmen, als dies von den nadelförmigen β-Phasen bekannt ist. Eine Druckgusslegierung mit einer vergleichsweise hohen Duktilität kann so sichergestellt werden. Im Allgemeinen wird noch erwähnt, dass durch dieses Verhältnis von Fe/Mn in Kombination mit hohen Abkühlgeschwindigkeiten (z.B.: durch eine beschleunigte Kühlung) deren Phasen und damit deren Einfluss auf das Gefüge vergleichsweise gering gehalten werden kann. Wird zusätzlich der Gesamtanteil von Fe und Mn an der Druckgusslegierung auf maximal 1,5 Gew.-% beschränkt, kann auch die Ausbildung grober α-Phasen weiter reduziert werden, selbst wenn die bei Druckgussverfahren üblicherweise durchgeführten hohen Abkühlgeschwindigkeiten angewendet werden. Die Konzentrationsvorschriften zu Fe und Mn können daher besonders der Duktilität der Druckgusslegierung förderlich sein.Thus, a quotient of the weight percent of Fe and Mn 0.35 to 1.5 lead to the fact that despite a comparatively high iron content, the formation of the β-phase (eg: Al 5 FeSi / Al 89 Fe 2 Si 2 ) in the structure, which is eliminated in the form of fine needles, can be significantly reduced. With an increased occurrence of the α-phase can be expected, which may be present as Al 15 (FeMn) 3 Si 2 due to the manganese content of at least 0.25 wt .-% according to the invention. This α-phase crystallizes in globulitic form and, due to its compact structure, can have a significantly more favorable influence on the ductility than is known from the acicular β-phases. A diecasting alloy with a comparatively high ductility can thus be ensured. In general, it is also mentioned that this ratio of Fe / Mn combined with high cooling rates (For example: by accelerated cooling) whose phases and thus their influence on the microstructure can be kept relatively low. In addition, if the total content of Fe and Mn on the die casting alloy is limited to a maximum of 1.5% by weight, the formation of coarse α phases can be further reduced, even if the high cooling rates usually used in die casting processes are used. The concentration requirements for Fe and Mn can therefore be particularly beneficial to the ductility of the diecasting alloy.

Cu, Mg:Cu, Mg:

Durch ein Einbringen und/oder Einstellen eines Magnesiumüberschusses, indem der Quotient der Gewichtsprozente von Cu und Mg 0,2 bis 0,8 beträgt, und unter Berücksichtigung, dass mindestens 0,1 Gew.-% Cu und 0,24 bis 0,8 Gew.-% Mg vorgesehen werden, kann im Wesentlichen das vorhandene Kupfer in der sich bevorzugt bildenden Q-Phase (Al5Cu2Mg8Si6) gebunden werden. Diese Konzentrationsvorschrift kann daher die Bildung korrosionsanfälliger Phasen, wie beispielsweise die Tao-Phase (Al5Cu4Zn) oder die Theta-Phase (Al2Cu), im Gefüge verhindern, so dass trotz vergleichsweise hoher Gewichtsprozente an Cu, was erfindungsgemäß zur Verbesserung der Warmaushärtung der Druckgusslegierung genützt wird, auch eine hohe Korrosionsbeständigkeit beibehalten werden kann. Außerdem kann durch diesen Magnesiumüberschuss der Aushärtemechanismus der Legierung verbessert werden, weil ein Teil des Mg in der Q-Phase (Al5Cu2Mg8Si6) gebunden wird und damit diesbezüglich bekannte Grenzen überwunden werden können, die sich durch eine übermäßige Ausscheidung von Mg2Si Vorphasen einstellen. Die Konzentrationsvorschriften zu Cu und Mg können daher besonders hohen Ansprüchen der Druckgusslegierung hinsichtlich Festigkeit und chemischer Reaktionsbeständigkeit genügen. Zudem konnte durch das vorgeschlagene Konzentrationsverhältnis von Cu und Mg eine verbesserte Verarbeitbarkeit, beispielsweise hinsichtlich Schweiß- und Nietbarkeit von Bauteilen aus dieser Druckgusslegierung, erreicht werden.By introducing and / or adjusting an excess of magnesium in that the quotient of the weight percent of Cu and Mg is 0.2 to 0.8, and taking into account that at least 0.1 wt .-% Cu and 0.24 to 0.8 Wt .-% Mg can be substantially, the existing copper in the preferably forming Q phase (Al 5 Cu 2 Mg 8 Si 6 ) are bound. This concentration rule can therefore prevent the formation of corrosion-prone phases, such as the Tao phase (Al 5 Cu 4 Zn) or the theta phase (Al 2 Cu) in the microstructure, so that despite comparatively high weight percent of Cu, which according to the invention for the improvement the hot curing of the die-cast alloy is used, even a high corrosion resistance can be maintained. In addition, this excess of magnesium can improve the curing mechanism of the alloy because part of the Mg is bound in the Q phase (Al 5 Cu 2 Mg 8 Si 6 ) and, in this regard, overcome known limitations due to excessive precipitation of Set Mg 2 Si pre-phases. The concentration requirements for Cu and Mg can therefore satisfy particularly high demands of the diecasting alloy in terms of strength and chemical reaction resistance. In addition, the proposed concentration ratio of Cu and Mg improved the processability, for example with regard to the weldability and rivability of components made from this diecasting alloy.

Mg, Fe, Mn:Mg, Fe, Mn:

Zudem konnte festgestellt werden, dass das Einbringen und/oder Einstellen des vorgenannten Magnesiumüberschusses gegenüber Cu auch dazu genützt werden kann, den erhöhten Fe-Gehalt der Druckgusslegierung in einer pi-Phase (Al8FeMg3Si6) zu binden. Damit kann auf der einen Seite die, die Duktilität beeinträchtigende β-Phase (z.B.: Al5FeSi/Al8.9Fe2Si2) reduziert werden, weil weniger Fe zur Bildung dieser β-Phase zur Verfügung steht, insbesondere aber konnte damit auf der anderen Seite auch der Mn-Gehalt in der Druckgusslegierung reduziert werden, weil die pi-Phase (z.B.: Al8FeMg3Si6) zur Aufnahme von Fe herangezogen werden kann. Druckgießprobleme, meist in Kauf zu nehmen aufgrund eines erhöhten Mn-Gehalts zur Kompensation von Fe Effekten, können so reduziert werden. Ein komplexes Verformen und auch eine exzellente Entformbarkeit können durch die besonderen Gehaltsgrenzen von Mg, Fe, Mn in Verbindung mit deren Konzentrationsvorschriften sichergestellt werden.In addition, it was found that the introduction and / or adjustment of the aforementioned magnesium excess over Cu can also be used to bind the increased Fe content of the die-cast alloy in a pi phase (Al 8 FeMg 3 Si 6 ). Thus, on the one hand, the ductility affecting β-phase (eg: Al 5 FeSi / Al 8.9 Fe 2 Si 2 ) can be reduced because less Fe is available for the formation of this β-phase, but in particular could on the On the other hand, the Mn content in the diecasting alloy can also be reduced because the pi phase (eg: Al 8 FeMg 3 Si 6 ) can be used to take up Fe. Die casting problems, usually to be accepted due to an increased Mn content to compensate for Fe effects, can thus be reduced. A complex deformation as well as an excellent releasability can be ensured by the special content limits of Mg, Fe, Mn in connection with their concentration requirements.

Zn:Zn:

Die Festigkeit der Legierung, zum Beispiel durch ein Zusammenwirken der Vorphasen Mg2Si und Q-Phase (Al5Cu2Mg8Si6) geprägt, kann durch Mischkristallhärtung mit Hilfe einer Zinkeinlagerung noch weiter verbessert werden. Hierfür ist Zink in den Gehaltsgrenzen von 0,40 bis 1,5 Gew.-% einzustellen. Zudem kann dies der Duktilität der Druckgusslegierung förderlich sein. Bei der Druckgusslegierung kann damit ein eventueller negativer Einfluss eines vergleichsweise hohen Mg-Gehalts auf ihre Duktilität verringert werden. Außerdem können sich die erfindungsgemäßen Gehaltsgrenzen an Zn bei der Verbesserung der Gießbarkeit der Druckgusslegierung auszeichnen, wodurch diesbezügliche Beeinträchtigungen aufgrund der vorgeschlagenen Gehaltsgrenzen an Mn in der Druckgusslegierung weitgehend kompensiert werden können.The strength of the alloy, shaped for example by an interaction of the precursors Mg 2 Si and Q phase (Al 5 Cu 2 Mg 8 Si 6 ), can be further improved by solid solution hardening with the help of a zinc deposit. For this purpose, zinc should be adjusted in the content limits of 0.40 to 1.5 wt .-%. In addition, this may be beneficial to the ductility of the diecasting alloy. In the case of the diecasting alloy, it is thus possible to reduce a possible negative influence of a comparatively high Mg content on its ductility. In addition, the content limits of Zn according to the invention may be distinguished in improving the castability of the die-cast alloy, whereby adverse effects due to the proposed content limits of Mn in the diecasting alloy can be largely compensated.

Die in den Legierungsbestandteilen Fe, Mn, Cu, Mg und Zn ausgewogene Druckgusslegierung auf Al-Si-Basis kann daher eine vergleichsweise hohe Duktilität, Korrosionsbeständigkeit, Festigkeit, Gießbarkeit und Verarbeitbarkeit miteinander kombinieren und so aus dem Stand der Technik bekannte Parametergrenzen überwinden, selbst wenn die Druckgusslegierung Sekundäraluminium aufweist und/oder dieser zugefügt wird bzw. dadurch vergleichsweise hohe Gehalte an Verunreinigungen führt.Therefore, the Al-Si-based die-casting alloy balanced in the alloy components Fe, Mn, Cu, Mg and Zn can combine a comparatively high ductility, corrosion resistance, strength, castability and workability with each other and thus overcome parameters known in the art, even if the die casting alloy has secondary aluminum and / or added thereto, resulting in comparatively high levels of impurities.

Der Vollständigkeit halber wird erwähnt, dass als Sekundäraluminium Aluminium bzw. eine Aluminiumlegierung, gewonnen aus Aluminiumschrott, verstanden werden kann.For the sake of completeness, it is mentioned that as secondary aluminum aluminum or an aluminum alloy, obtained from aluminum scrap, can be understood.

Festigkeit, Duktilität, Verarbeitbarkeit und chemischer Reaktionsbeständigkeit der Druckgusslegierung können weiter verbessert werden, wenn diese 0,3 bis 1,0 Gew.-% Eisen (Fe), 0,25 bis 1,0 Gew.-% Mangan (Mn) und 0,1 bis 0,6 Gew.-% Kupfer (Cu) aufweist.Strength, ductility, processability, and chemical reaction resistance of the die-cast alloy can be further improved when they contain 0.3 to 1.0 wt% Fe (Fe), 0.25 to 1.0 wt% Manganese (Mn), and 0 , 1 to 0.6 wt .-% copper (Cu).

Erfüllt die Druckgusslegierung in ihrer Zusammensetzung die Ordnungsrelation Gew . - % Mg > 0 , 2 + 0 , 12 × Gew . - % Fe / Gew . - % Mn

Figure imgb0001

kann eine einfache Verfahrensvorschrift zur Erhöhung des Anteils an pi-Phase (z.B.: Al8FeMg3Si6) im Gefüge der Druckgusslegierung gegeben werden. Erhöhte Fe-Anteile können so kompensiert werden, wodurch mit vermindertem Mn-Anteil beste Gießbarkeit der Druckgusslegierung gewahrt bleiben kann. Außerdem kann diese pi-Phase mit einem Lösungsglühen in eine für die geforderten Eigenschaften der Druckgusslegierung harmlose α-Phase umgewandelt werden.If the diecast alloy meets the order relation in its composition weight , - % mg > 0 . 2 + 0 . 12 × weight , - % Fe / weight , - % Mn
Figure imgb0001

a simple procedure for increasing the proportion of pi-phase (eg: Al 8 FeMg 3 Si 6 ) in the structure of the die-cast alloy can be given. Increased Fe contents can thus be compensated, whereby the best castability of the die-cast alloy can be maintained with a reduced Mn content. In addition, this pi-phase can be converted with a solution annealing into a harmless for the required properties of the die-cast alloy α-phase.

Die Druckgusslegierung kann hinsichtlich ihrer erreichbaren Duktilitäts-, Festigkeits-und Korrosionsbeständigkeit weiter verbessert werden, wenn der Gesamtanteil von Fe und Mn an der Druckgusslegierung zusammen maximal 1,2 Gew.-%, der Quotient der Gewichtsprozente von Fe und Mn 0,5 bis 1,25 und der Quotient der Gewichtsprozente von Cu und Mg 0,2 bis 0,5 betragen.The diecasting alloy can be further improved in terms of achievable ductility, strength and corrosion resistance, if the total content of Fe and Mn on the die-casting alloy together maximally 1.2 wt .-%, the quotient of the weight percentages of Fe and Mn 0.5 to 1 , 25 and the quotient of the weight percent of Cu and Mg is 0.2 to 0.5.

Weist die Druckgusslegierung 9,5 bis 11,5 Gew.-% Silizium (Si) und/oder 0,35 bis 0,6 Gew.-% Eisen (Fe) und/oder 0,3 bis 0,75 Gew.-% Mangan (Mn) und/oder 0,1 bis 0,4 Gew.-% Kupfer (Cu) und/oder 0,24 bis 0,5 Gew.-% Magnesium (Mg) und/oder 0,40 bis 1,0 Zink (Zn) auf, ergeben sich engere Grenzbereiche für eine in ihrer mechanischen und/oder chemischen Beständigkeit verbesserten Durchgusslegierung auf Al-Si Basis. Im Allgemeinen wird erwähnt, dass durch den vorgeschlagenen Gehalt an Si die Fließeigenschaften der Schmelze verbessert und spröde Primärsiliziumphasen vermieden werden können. Dadurch kann es auch möglich werden, selbst vergleichsweise dünnwandige Bauteile druckzugießen. Hierzu kann sich 9,5 bis 11,5 Gew.-% Silizium (Si) besonders vorteilhaft herausstellen.If the die casting alloy has 9.5 to 11.5 wt.% Silicon (Si) and / or 0.35 to 0.6 wt.% Iron (Fe) and / or 0.3 to 0.75 wt. Manganese (Mn) and / or 0.1 to 0.4% by weight of copper (Cu) and / or 0.24 to 0.5% by weight of magnesium (Mg) and / or 0.40 to 1.0 zinc (Zn), resulting in narrower limit ranges for an Al-Si based through-casting alloy improved in mechanical and / or chemical resistance. In general, it is mentioned that the proposed content of Si improves the flow properties of the melt and that brittle primary silicon phases can be avoided. This also makes it possible to pressure-mold even comparatively thin-walled components. 9.5 to 11.5% by weight of silicon (Si) may prove to be particularly advantageous for this purpose.

Zu Zwecken der Dauerveredelung kann die Druckgusslegierung 50 bis 300 ppm Strontium (Sr) und/oder 20 bis 250 ppm Natrium (Na) und/oder 20 bis 350 ppm Antimon (Sb) aufweisen. Optional zur Kornfeinung der Druckgusslegierung können sich maximal 0,2 Gew.-% Titan (Ti) und/oder maximal 0,3 Gew.-% Zirkon und/oder maximal 0,3 Gew.-% Vanadium (V) als vorteilhaft herausstellen. Die Druckgusslegierung kann jeweils auf 100 Gew.-% mit Al ergänzt werden, wobei diese Druckgusslegierung auch herstellungsbedingt unvermeidbare Verunreinigungen führen kann. Im Allgemeinen wird erwähnt, dass die Druckgusslegierung Verunreinigungen mit jeweils maximal 0,1 Gew.-% und gesamt höchstens 1 Gew.-% aufweisen kann.For duration refinement purposes, the die casting alloy may have 50 to 300 ppm strontium (Sr) and / or 20 to 250 ppm sodium (Na) and / or 20 to 350 ppm antimony (Sb). Optionally, for grain refining of the diecasting alloy, at most 0.2% by weight of titanium (Ti) and / or at most 0.3% by weight of zirconium and / or at most 0.3% by weight of vanadium (V) may prove to be advantageous. The die-cast alloy can be supplemented in each case to 100% by weight with Al, and this die-casting alloy can also lead to unavoidable impurities due to its production. In general, it is mentioned that the die-cast alloy can have impurities of not more than 0.1% by weight and not more than 1% by weight in total.

Im Folgenden wird die Erfindung beispielsweise anhand von Ausführungsbeispielen näher erläutert:In the following, the invention will be explained in more detail by way of example with reference to exemplary embodiments:

Zum Nachweis der erzielten Effekte wurden aus verschiedenen Druckgusslegierungen dünnwandige Gussbauteile im Druckgussverfahren hergestellt. Die Zusammensetzungen der untersuchten Legierungen sind in der Tabelle 1 angeführt. Tabelle 1: Übersicht zu den untersuchten Legierungen Legierungs-Nr. Zusammensetzung Fe/Mn Cu/Mg 1 AlSi10Mn0,5De0,1Mg0,4 0,2 0 2 AlSi10Mn0,5Fe0,5Mg0,4Cu0,25Zn0,75 1 0,63 To demonstrate the effects achieved, thin-walled cast components were produced by die casting from various die cast alloys. The compositions of the alloys studied are listed in Table 1. Table 1: Overview of the investigated alloys Alloy no. composition Fe / Mn Cu / Mg 1 AlSi10Mn0,5De0,1Mg0,4 0.2 0 2 AlSi10Mn0,5Fe0,5Mg0,4Cu0,25Zn0,75 1 0.63

Bei der Legierung 1 handelt es sich um eine Druckgusslegierung aus Primäraluminium mit geringem Verunreinigungsgrad. Legierung 2 hingegen zeigt einen erheblichen Grad an Verunreinigungen an Eisen- und Kupfer-Legierungsanteilen, welche beispielsweise durch Sekundäraluminium eingetragen werden können.Alloy 1 is a die cast alloy of low contamination primary aluminum. Alloy 2, on the other hand, shows a considerable degree of impurities in iron and copper alloy fractions, which can be introduced, for example, by secondary aluminum.

Die Legierungen bzw. die daraus hergestellten Druckgussteile bzw. Prüfkörper wurde einer T7-Wärmebehandlung mit einer Stunde bei 460°C Lösungsglühen, einem Abschrecken mit Wasser und einer zweistündigen Warmauslagerung bei 220°C unterworfen. Die fertigen Prüfkörper wurden schließlich auf ihre mechanischen Eigenschaften hin untersucht. Hierzu wurden die Zugfestigkeit Rm, die Streckgrenze Rp0,2 und die Bruchdehnung A5 im Zugversuch bestimmt. Die erhaltenen Messwerte sind in der Tabelle 2 zusammengefasst. Tabelle 2: Mechanische Kennwerte der untersuchten Legierungen Legierungs-Nr. Rp0,2 [MPa] Rm[MPa] A5[%] 1 155 230 14,3 2 160 240 13,8 The alloys and die castings or specimens produced therefrom were subjected to T7 heat treatment for 1 hour at 460 ° C solution annealing, quenching with water and 2 hours aging at 220 ° C. The finished test specimens were finally examined for their mechanical properties. For this purpose, the tensile strength R m , the yield strength R p0.2 and the elongation at break A 5 were determined in a tensile test. The measured values obtained are summarized in Table 2. Table 2: Mechanical characteristics of the alloys investigated Alloy no. R p0.2 [MPa] R m [MPa] A 5 [%] 1 155 230 14.3 2 160 240 13.8

Untersuchungen an der Druckgusslegierung Nr. 2 zeigten, dass durch den eingestellten Eisenanteil und Mangangehalt die Bildung einer unerwünschten Betaphase bei der Erstarrung vermieden werden kann. Auch der Kupferanteil kann durch einen Magnesiumanteil vollständig in der Q-Phase gebunden werden, wodurch vergleichsweise hohe Korrosionsbeständigkeit erreicht wird. Aufgrund dieser Elementkombinationen können trotz eines Eisengehaltes von 0,5 Gew.-% eine erhöhte Festigkeit und Bruchdehnung von 13,8% erreicht werden. Der vergleichsweise hohe Zinkgehalt führt zu einer Festigkeitssteigerung, ohne die mechanischen Eigenschaften negativ zu beeinflussen.Investigations on die casting alloy no. 2 showed that the formation of an undesirable beta phase during solidification can be avoided by the iron content and manganese content set. The proportion of copper can be completely bound by a magnesium content in the Q phase, whereby comparatively high corrosion resistance is achieved. Due to these element combinations, an increased strength and elongation at break of 13.8% can be achieved despite an iron content of 0.5 wt .-%. The comparatively high zinc content leads to an increase in strength without negatively influencing the mechanical properties.

Wie nun im Vergleich der beiden Druckgusslegierungen 1 und 2 nach Tabelle 2 erkannt werden kann, zeigen diese beiden Legierungen ähnliche mechanische Eigenschaften, obwohl Legierung 2 einen deutlich höheren Eisen- und Kupfergehalt gegenüber Legierung 1 aufweist.As can now be seen in the comparison of the two die-cast alloys 1 and 2 according to Table 2, these two alloys show similar mechanical properties, Although Alloy 2 has a significantly higher iron and copper content compared to Alloy 1.

Es ist somit gezeigt, dass die erfindungsgemäß vorgeschlagenen Konzentrationsverhältnisse für eine Druckgusslegierung es zulassen, vergleichsweise hohe Duktilität, Korrosionsbeständigkeit, Festigkeit, Gießbarkeit und Verarbeitbarkeit sicherzustellen.It is thus shown that the concentration ratios for a diecasting alloy proposed according to the invention make it possible to ensure comparatively high ductility, corrosion resistance, strength, castability and processability.

Claims (11)

Druckgusslegierung auf Al-Si-Basis, aufweisend insbesondere Sekundäraluminium, dadurch gekennzeichnet, dass die Druckgusslegierung 6 bis 12 Gew.-% Silizium (Si), mindestens 0,3 Gew.-% Eisen (Fe), mindestens 0,25 Gew.-% Mangan (Mn), mindestens 0,1 Gew.-% Kupfer (Cu), 0,24 bis 0,8 Gew.-% Magnesium (Mg) und 0,40 bis 1,5 Gew.-% Zink (Zn) aufweist,
wobei der Gesamtanteil von Fe und Mn an der Druckgusslegierung zusammen maximal 1,5 Gew.-%, der Quotient der Gewichtsprozente von Fe und Mn 0,35 bis 1,5 und der Quotient der Gewichtsprozente von Cu und Mg 0,2 bis 0,8 betragen.
Die-casting alloy based on Al-Si, comprising in particular secondary aluminum, characterized in that the die-cast alloy 6 to 12 % By weight of silicon (Si), at least 0.3 % By weight of iron (Fe), at least 0.25 Wt .-% manganese (Mn), at least 0.1 Wt.% Copper (Cu), 0.24 to 0.8 Wt .-% magnesium (Mg) and 0.40 to 1.5 % By weight of zinc (Zn),
the total proportion of Fe and Mn in the die-cast alloy together being a maximum of 1.5% by weight, the quotient of the percentages by weight of Fe and Mn 0.35 to 1.5 and the quotient of the percentages by weight of Cu and Mg 0.2 to 0, 8 amount.
Druckgusslegierung nach Anspruch 1, dadurch gekennzeichnet, dass die Druckgusslegierung 0,3 bis 1,0 Gew.-% Eisen (Fe), 0,25 bis 1,0 Gew.-% Mangan (Mn) und 0,1 bis 0,6 Gew.-% Kupfer (Cu) aufweist.
Diecasting alloy according to claim 1, characterized in that the diecasting alloy 0.3 to 1.0 % By weight of iron (Fe), 0.25 to 1.0 Wt .-% manganese (Mn) and 0.1 to 0.6 Wt .-% copper (Cu).
Druckgusslegierung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Druckgusslegierung in ihrer Zusammensetzung die Ordnungsrelation Gew . - % Mg > 0 , 2 + 0 , 12 × Gew . - % Fe / Gew . - % Mn
Figure imgb0002

erfüllt.
Diecasting alloy according to claim 1 or 2, characterized in that the diecasting alloy in its composition, the order relationship weight , - % mg > 0 . 2 + 0 . 12 × weight , - % Fe / weight , - % Mn
Figure imgb0002

Fulfills.
Druckgusslegierung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass der Gesamtanteil von Fe und Mn an der Druckgusslegierung zusammen maximal 1,2 Gew.-%, der Quotient der Gewichtsprozente von Fe und Mn 0,5 bis 1,25 und der Quotient der Gewichtsprozente von Cu und Mg 0,2 bis 0,5 betragen.Diecasting alloy according to claim 1, 2 or 3, characterized in that the total amount of Fe and Mn together on the diecasting alloy together at most 1.2 wt .-%, the quotient of the weight percentages of Fe and Mn 0.5 to 1.25 and the quotient the weight percentages of Cu and Mg are from 0.2 to 0.5. Druckgusslegierung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Druckgusslegierung 9,5 bis 11,5 Gew.-% Silizium (Si) aufweist.Die-cast alloy according to one of claims 1 to 4, characterized in that the die cast alloy comprises 9.5 to 11.5 wt .-% silicon (Si). Druckgusslegierung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Druckgusslegierung 0,35 bis 0,6 Gew.-% Eisen (Fe) aufweist.Die casting alloy according to one of claims 1 to 5, characterized in that the die cast alloy has 0.35 to 0.6 wt .-% iron (Fe). Druckgusslegierung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Druckgusslegierung 0,3 bis 0,75 Gew.-% Mangan (Mn) aufweist.Die-cast alloy according to one of claims 1 to 6, characterized in that the die cast alloy has 0.3 to 0.75 wt .-% manganese (Mn). Druckgusslegierung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Druckgusslegierung 0,1 bis 0,4 Gew.-% Kupfer (Cu) aufweist.Die casting alloy according to one of claims 1 to 7, characterized in that the die-cast alloy has 0.1 to 0.4 wt .-% copper (Cu). Druckgusslegierung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Druckgusslegierung 0,24 bis 0,5 Gew.-% Magnesium (Mg) aufweist.Die casting alloy according to one of claims 1 to 8, characterized in that the die-cast alloy has 0.24 to 0.5 wt .-% magnesium (Mg). Druckgusslegierung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Druckgusslegierung 0,40 bis 1,0 Gew.-% Zink (Zn) aufweist.Die casting alloy according to one of claims 1 to 9, characterized in that the die cast alloy has 0.40 to 1.0 wt .-% zinc (Zn). Druckgusslegierung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Druckgusslegierung 50 bis 300 ppm Strontium (Sr) und/oder 20 bis 250 ppm Natrium (Na) und/oder 20 bis 350 ppm Antimon (Sb),
sowie wenigstens einen der folgenden Bestandteile zu maximal 0,2 Gew.-% Titan (Ti); maximal 0,3 Gew.-% Zirkon; maximal 0,3 Gew.-% Vanadium (V);
und als Rest Aluminium sowie herstellungsbedingt unvermeidbare Verunreinigungen aufweist.
Die-cast alloy according to one of claims 1 to 10, characterized in that the die-cast alloy 50 to 300 ppm strontium (Sr) and / or 20 to 250 ppm sodium (Na) and / or 20 to 350 ppm antimony (Sb),
and at least one of the following components maximum 0.2 % By weight of titanium (Ti); maximum 0.3 % By weight zirconium; maximum 0.3 % By weight of vanadium (V);
and the balance aluminum and production-related unavoidable impurities.
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PL2657360T3 (en) 2014-09-30
CN104350165A (en) 2015-02-11
WO2013160108A3 (en) 2013-12-19
SI2657360T1 (en) 2014-07-31
EP2657360B1 (en) 2014-02-26
CN104350165B (en) 2017-06-16
ES2466345T3 (en) 2014-06-10
WO2013160108A2 (en) 2013-10-31
CA2871260A1 (en) 2013-10-31
CA2871260C (en) 2020-09-22

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