EP2865774B1 - Alliage de fonderie d'aluminium - Google Patents

Alliage de fonderie d'aluminium Download PDF

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Publication number
EP2865774B1
EP2865774B1 EP13382424.3A EP13382424A EP2865774B1 EP 2865774 B1 EP2865774 B1 EP 2865774B1 EP 13382424 A EP13382424 A EP 13382424A EP 2865774 B1 EP2865774 B1 EP 2865774B1
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EP
European Patent Office
Prior art keywords
weight
alloy
aluminium casting
aluminium
casting alloy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
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EP13382424.3A
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German (de)
English (en)
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EP2865774A1 (fr
Inventor
Francisco Sáenz de Tejada Picornell
Iñigo Anza Ortiz de Apodaca
Iban Vicario Gómez
Ignacio Crespo Camino
Alberto Abuin Ariceta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Befesa Aluminio SL
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Befesa Aluminio SL
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Priority to EP13382424.3A priority Critical patent/EP2865774B1/fr
Priority to ES13382424.3T priority patent/ES2582530T3/es
Publication of EP2865774A1 publication Critical patent/EP2865774A1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent

Definitions

  • the field of the invention is related to aluminium casting alloys.
  • the present invention relates to a hypoeutectic secondary aluminum-silicon alloy, useful to produce, by high pressure die casting, components which have to fulfill premium abrasion resistance requirements in as-cast condition at room temperature.
  • Aluminum casting alloys have not been traditionally well suited for abrasion applications in which, among others, high hardness properties must be present.
  • abrasion requirements are, among other, piston cylinders, brake discs or steering boxes.
  • Brake discs and piston cylinders must support not only abrasion but also thermal fatigue resistance, and if aluminium is employed instead of steel, hypereutectic alloys have been traditionally applied to produce automotive components by gravity die casting (GC).
  • GC gravity die casting
  • Hypereutectic alloys present primary silicon grains that are normally refined with phosporous and T5 thermal treatment to resist abrasion.
  • Nickel is the most important alloying element, with also Copper and dissoluted Zinc, to keep mechanical properties at high temperatures.
  • hypereutectic alloys are not so well suited. They do not fulfill the required hardness (above 115-120HB), Nickel is superfluous and Phosphorous is so volatile that requires skilled technicians to melt the alloy, which must be hold at temperatures above 750°C. Only high hardness and high strength are the objective properties, which opens the door to components produced by high pressure die casting (HPDC) with hypoeutectic aluminum.
  • HPDC high pressure die casting
  • HPDC process has been widely employed to new applications in the last twenty years, due to its low cost for big series, a high component reproducibility and reliability and it is hence mostly preferred when compared with GC.
  • Alloys of primary quality with a Fe/Mn ratio of 1 ⁇ 2 has been disclosed in the prior art, and decrease die soldering and reduce as much as possible the negative effect of Al 5 FeSi intermetallics on the elongation values.
  • WO2006/066314 discloses an aluminium-based high pressure die casting comprising (in wt.%): 4 to 4.9% Cu; 0.09-0.7% Mg; 0.19-0.21% Mn; 0.1-0.12% Ni; 8.3-9.2% Si ; 0.98-1% Fe; 0.5-0.56 Zn; ⁇ 0.1% Sn; ⁇ 0.1% Pb; ⁇ 0.1% Ti, ⁇ 0.1 % Cr, and the remainder consisting of aluminium and incidental impurities.
  • elongation and mechanical properties elongation (A) equal to or more than 1%, yield strength (Rp0.2) equal to or more than 200 MPa, ultimate tensile strength (Rm) equal to or more than 300 MPa and Brinell Hardness (HB) equal to or more than 120 HB.
  • elongation and mechanical properties are required for components designed to support simultaneously high abrasion and high static bending/torsion loads, maintaining a minimal ductility and other processing properties as alloy fluidity, low die soldering, easy welding or high machinability, among others.
  • a preferred embodiment of the present invention is an aluminium casting alloy, wherein said alloy consists of:
  • Silicon content has been set into a wide range between 7-11% by weight to guarantee high fluidity, especially for thin wall castings.
  • Copper content has been set at values above 4% as it is required to get hardness above 125 HB and high strength.
  • Magnesium content is also a key element to maximize the hardness and mechanical properties, whose content must be coupled with the copper content, showing best performance when both set above 0.5% by weight and 4% by weight, respectively.
  • Iron content plays a key role into the mechanical properties and hence it has been limited to 0.6-1% by weight to guarantee both low mold soldering and small volume fraction of Al 5 FeSi intermetallics, which are minimized by the manganese content, implying an elongation above 1%.
  • the manganese content helps to transform the Al 5 FeSi intermetallics into Al 12 (Mn,Fe)Si 2 and to reduce as much as possible the negative effect of those intermetallics. Values of manganese above 0.3% by weight were not found to be useful in terms of Al 5 FeSi intermetallics transformation.
  • a further embodiment of the invention is the aluminium casting alloy of the invention, wherein said alloy comprises 8-9% by weight of silicon.
  • a further embodiment of the invention is the aluminium casting alloy of the invention, wherein said alloy comprises 0.8-1 % by weight of iron.
  • a further embodiment of the invention is the aluminium casting alloy of the invention, wherein said alloy comprises 4-4.5% by weight of copper.
  • a further embodiment of the invention is the aluminium casting alloy of the invention, wherein said alloy comprises 0.05-0.3% by weight of manganese.
  • a further embodiment of the invention is the aluminium casting alloy of the invention, wherein said alloy comprises 0.6-0.7% by weight of magnesium.
  • Example 1 Aluminium casting alloys (prepararation, composition and mechanical properties)
  • Aluminium compositions have been prepared by melting a standard EN-AC 46500 alloy in a holding furnace at 690°C and later poured into the injection vessel, being injected into the mold cavity of a 950 tonnes closing force HPDC machine at 685°C. No vacuum conditions were applied.

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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)
  • Fuel Cell (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Conductive Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Claims (6)

  1. Alliage de fonderie d'aluminium, caractérisé en ce que ledit alliage est constitué de :
    7-11% en poids de silicium,
    0,6-1% en poids de fer,
    4-5% en poids de cuivre,
    0,05-0,5% en poids de manganèse,
    0,05-1,2% en poids de zinc,
    0,56-0,9% en poids de magnésium,
    0,01-0,15% en poids de titane,
    0,01-0,1% en poids de chrome,
    0,01-0,1% en poids de nickel,
    0,01-0,1% en poids de plomb,
    0,01-0,1% en poids d'étain
    et le reste est de l'aluminium.
  2. Alliage de fonderie d'aluminium selon la revendication 1, caractérisé en ce que ledit alliage est constitué de 8-9% en poids de silicium.
  3. Alliage de fonderie d'aluminium selon la revendication 1 ou la revendication 2, caractérisé en ce que ledit alliage est constitué de 0,8-1% en poids de fer.
  4. Alliage de fonderie d'aluminium selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit alliage est constitué de 4-4,5% en poids de cuivre.
  5. Alliage de fonderie d'aluminium selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ledit alliage est constitué de 0,05-0,3% en poids de manganèse.
  6. Alliage de fonderie d'aluminium selon l'une quelconque des revendications 1 à 5, caractérisé en ce que ledit alliage est constitué de 0,6-0,7% en poids de magnésium.
EP13382424.3A 2013-10-23 2013-10-23 Alliage de fonderie d'aluminium Active EP2865774B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13382424.3A EP2865774B1 (fr) 2013-10-23 2013-10-23 Alliage de fonderie d'aluminium
ES13382424.3T ES2582530T3 (es) 2013-10-23 2013-10-23 Aleación de aluminio para fundición

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13382424.3A EP2865774B1 (fr) 2013-10-23 2013-10-23 Alliage de fonderie d'aluminium

Publications (2)

Publication Number Publication Date
EP2865774A1 EP2865774A1 (fr) 2015-04-29
EP2865774B1 true EP2865774B1 (fr) 2016-04-13

Family

ID=49517464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13382424.3A Active EP2865774B1 (fr) 2013-10-23 2013-10-23 Alliage de fonderie d'aluminium

Country Status (2)

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EP (1) EP2865774B1 (fr)
ES (1) ES2582530T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024194350A1 (fr) 2023-03-20 2024-09-26 Federal-Mogul Nürnberg GmbH Procédé de production d'un disque de frein ou d'un tambour de frein, disque de frein ou tambour de frein, utilisation d'un alliage d'aluminium pour la production d'un disque de frein ou d'un tambour de frein, et frein à disque ou frein à tambour

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105671353B (zh) * 2016-01-26 2017-09-26 山东正诺集团有限公司 一种无机粒子增强的铝基刹车盘材料的制备方法
CN106591640B (zh) * 2016-11-18 2019-04-16 广州致远新材料科技有限公司 一种耐磨铝合金
ES2753167T3 (es) * 2016-12-28 2020-04-07 Befesa Aluminio S L Aleación de aluminio para fundición
KR101955993B1 (ko) * 2017-02-17 2019-03-08 주식회사 지.에이.엠 고강도 알루미늄 합금 및 고강도 알루미늄 합금 주물
CN108411166A (zh) * 2018-02-28 2018-08-17 山东河山机械股份有限公司 一种压铸铝合金及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0111082A1 (fr) * 1982-10-16 1984-06-20 Cosworth Research And Development Limited Alliage de coulée à base d'aluminium
GB2332449B (en) * 1997-12-20 2002-05-22 Ae Goetze Automotive Ltd Aluminium alloy
US6908590B2 (en) * 2002-03-19 2005-06-21 Spx Corporation Aluminum alloy
MX2007007763A (es) * 2004-12-23 2007-08-21 Commw Scient Ind Res Org Tratamiento termico de piezas vaciadas en molde a alta presion de aleacion de aluminio.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024194350A1 (fr) 2023-03-20 2024-09-26 Federal-Mogul Nürnberg GmbH Procédé de production d'un disque de frein ou d'un tambour de frein, disque de frein ou tambour de frein, utilisation d'un alliage d'aluminium pour la production d'un disque de frein ou d'un tambour de frein, et frein à disque ou frein à tambour
DE102023106915A1 (de) 2023-03-20 2024-09-26 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung einer Bremsscheibe, Bremsscheibe und Verwendung einer Aluminiumlegierung zur Herstellung einer Bremsscheibe

Also Published As

Publication number Publication date
EP2865774A1 (fr) 2015-04-29
ES2582530T3 (es) 2016-09-13

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