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EP3024958B1 - Alliage d'aluminium de fondèrie résistant a haute temperature et pièce de fonderie pour moteurs a combustion interne utilisant cet alliage - Google Patents

Alliage d'aluminium de fondèrie résistant a haute temperature et pièce de fonderie pour moteurs a combustion interne utilisant cet alliage Download PDF

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Publication number
EP3024958B1
EP3024958B1 EP14744487.1A EP14744487A EP3024958B1 EP 3024958 B1 EP3024958 B1 EP 3024958B1 EP 14744487 A EP14744487 A EP 14744487A EP 3024958 B1 EP3024958 B1 EP 3024958B1
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Prior art keywords
alloy
cast
casting
weight
alloys
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German (de)
English (en)
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EP3024958A1 (fr
Inventor
Michael RAFETZEDER
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Nemak SAB de CV
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Nemak SAB de CV
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Priority to PL14744487T priority Critical patent/PL3024958T3/pl
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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
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • C22C21/18—Alloys based on aluminium with copper as the next major constituent with zinc
    • 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
    • C22C21/12—Alloys based on aluminium with copper as the next major constituent
    • C22C21/14—Alloys based on aluminium with copper as the next major constituent with silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/057—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent

Definitions

  • the invention relates to a cast aluminum alloy, which can be cast well and has a high strength in the warm state even after a long service life at high operating temperatures.
  • the invention relates to a component for internal combustion engines, which is cast from a cast aluminum alloy.
  • Such components are, in particular, cylinder heads or engine blocks.
  • suitable cast aluminum alloys have a high yield strength both at room and at operating temperature, high elongation at break, high thermal conductivity, low thermal expansion, high creep strength, as well as favorable Have processing properties, including good fluidity and low tendency to crack. At the same time, these alloys should be readily castable in order to enable process-reliable production of the castings.
  • AlCu7xx A group of alloys utilizing this positive influence of Cu on the hot strength is known as "AlCu7xx”. This includes, for example, the alloy “AlCu7MnZr” which, in addition to Al and accompanying elements (in% by weight), contains 6.72% Cu, 0.22% Zr, 0.11% Ti, 0.5% Mn and the impurities attributable to impurities of Fe, Mg and Zn.
  • AlCu7MnZr the superior heat resistance of Cu-containing aluminum casting alloys of this type are opposed by an increased tendency to crack and severely limited castability.
  • the above-mentioned AlCu7MnZr alloy proves to be virtually non-pourable.
  • the object of the invention was to provide an aluminum casting alloy which, even after a prolonged period of use at high temperatures, still has high mechanical properties and at the same time sheds well.
  • a casting for an internal combustion engine should be created, which has optimized mechanical properties when used at high temperatures and at the same time can be reliably manufactured by casting.
  • the solution to the above-mentioned object is that such a casting is cast from an aluminum casting alloy according to the invention.
  • the alloy according to the invention is suitable in particular for the casting production of cylinder heads, which are exposed to extreme thermal and mechanical stresses in practical use.
  • the aluminum casting alloy according to the invention contains, in addition to aluminum and unavoidable impurities (in% by weight), 6.0-8.0% Cu, 0.3-0.55% Mn, 0.18-0.25% Zr, 3.0 7.0% Si, 0.05-0.2% Ti, up to 0.03% Sr, up to 0.04% V and up to 0.25% Fe.
  • aluminum cast alloy components reach in the state T6W, d. H. solution annealed and thermally aged for 4 hours at 240 ° C, at room temperature under static load in average regular tensile strength Rm of more than 260 MPa, a Brinell hardness HB of at least 90 HB, a yield strength Rp0.2 of at least 170 MPa and a breaking elongation A of at least 1.65%.
  • the average tensile strength Rm is at least 80 MPa
  • the yield strength Rp0.2 is at least 60 MPa
  • the elongation at break A at least 24%.
  • the high-temperature strength of an aluminum casting alloy according to the invention is consequently significantly higher than in the case of conventional aluminum casting alloys which are currently used by default for casting internal combustion engine components.
  • the mechanical properties of the components cast from the cast aluminum alloy according to the invention in the delivered condition T6W are at the level of the conventional high-strength AlCu7xx alloys.
  • the cast aluminum alloy according to the invention is characterized by a good castability and an optimum, insensitive solidification behavior. Practical experiments have shown that components cast from cast aluminum alloy according to the invention have no optically detectable cracks and are largely free of pores.
  • the cast aluminum alloy according to the invention thus allows the reliable casting production of castings, which also in high operating temperatures have optimal load capacity.
  • Cu is contained in the alloy according to the invention in contents of 6.0-8.0 wt .-% in order to ensure the required heat resistance. At the same time, Cu contributes to the hardenability of the aluminum casting alloy. These positive effects of Cu can be ensured particularly reliably in an aluminum casting alloy according to the invention if the Cu content is at least 6.5% by weight. At the same time, a negative effect of the presence of Cu on the mechanical properties, such as a reduction in the elongation at break, can be particularly reliably excluded by limiting the Cu content of the aluminum casting alloy according to the invention to at most 7.5% by weight.
  • the Si content of an aluminum casting alloy according to the invention is in the range of 3.0-7.0 wt .-%.
  • the focus of the properties can be placed on the castability on the one hand and on the heat resistance on the other hand by an appropriate adjustment of the Si content within this content range.
  • the Si content of the aluminum casting alloy according to the invention is less than 5.0 wt .-%.
  • the insensitivity of Aluminum casting alloy according to the invention against fluctuations in the phase formation can be increased thereby that the Si content is increased to at least 3.5 wt .-%.
  • the aluminum casting alloy according to the invention proves to be stable in terms of its properties and behavior in a heat treatment.
  • the Si content is restricted to at most 4.5% by weight, the range in which, with good reliable castability, highest strengths are achieved, in particular in the case of high-temperature use, can be achieved particularly accurately.
  • the Si content of the aluminum casting alloy according to the invention can be reduced to 5.0% by weight, in particular 5.5% by weight. %, be raised.
  • an aluminum casting alloy according to the invention which is optimized with regard to castability on the one hand and heat resistance on the other hand results when the Si content is limited to at most 7% by weight, in particular to at most 6.5% by weight.
  • Mn contents of 0.3-0.55% by weight contribute to increasing the strength of components cast from inventive aluminum casting alloy. This positive effect occurs in particular when the Mn content the aluminum casting alloy according to the invention is 0.4-0.55% by weight.
  • Zr at levels of 0.18-0.25% by weight contributes substantially to the fine grain of the structure of a cast part cast from an aluminum casting alloy according to the invention.
  • Zr contributes above all to increased temperature stability and thus strength at temperatures of more than 250 ° C. This applies in particular when the Zr content of the aluminum casting alloy according to the invention is 0.2-0.25% by weight.
  • the Ti contents of 0.05-0.2% by weight provided in the cast aluminum alloy according to the invention also support the formation of a fine-grained microstructure and contribute to increasing the strength. In order to be able to use this effect particularly reliably, it may be expedient to set the Ti content of an aluminum casting alloy according to the invention to at least 0.08% by weight.
  • the upper limit of the corridor in which an optimized effect of the titanium present in the cast aluminum alloy according to the invention is to be expected is 0.12% by weight.
  • Sr is optionally added to the cast aluminum alloy of the invention for refining.
  • the addition of Sr is therefore particularly useful in cast aluminum alloys according to the invention, which have Si contents of at least 5.0 wt .-%.
  • Si contents of at least 5.0 wt .-%.
  • the aluminum casting alloy optionally up to 0.025 wt .-% in order to use the finishing effect there.
  • a first variant of the aluminum casting alloy according to the invention in which the focus is on sufficient castability with simultaneously maximized mechanical properties, comprises (in% by weight) 6.0-8.0% Cu, 0.3-0 , 55% Mn, 0.18 - 0.25% Zr, up to 0.25% Fe, 3.0 - ⁇ 5.0 Si, 0.05 - 0.2% Ti, up to 0.04% V and up to 0.025% Sr.
  • a further optimized embodiment of this variant with good castability in view of maximized mechanical properties consists of aluminum and unavoidable impurities and (in wt .-%) 6.5 to 7.5 wt .-% Cu, 0.4-0.55 wt% Mn, 0.20-0.25% Zr, up to 0.12% Fe, 3.5-4.5% Si, 0.08-0.12% Ti , up to 0.02% V and 0.05-0.02% Sr.
  • an aluminum casting alloy according to the invention (in% by weight) contains 6.0-8.0% Cu , 0.3-0.55% Mn, 0.18-0.25% Zr, up to 0.25% Fe, 5.0-7.0 Si, 0.05-0.2% Ti, up to 0.04% V and 0.01-0.03% Sr.
  • a design optimized for optimum castability with high mechanical properties of this variant It then consists of aluminum and constituent elements produced by its manufacture and (in% by weight) 6.5-7.5% by weight of Cu, 0.4-0.55% by weight of Mn, 0.20-0.25% of Zr , up to 0.12% Fe, 5.5-6.5% Si, 0.08-0.12% Ti, up to 0.02% V and 0.015-0.03% Sr.
  • cylinder heads cast from the cast aluminum alloys E1, E2 and V have been subjected to a long-term heat treatment in which they last for a period of eight hours, then for a period of 100 hours and finally over a period of 300 hours at a temperature of 300 ° C have been maintained.
  • each sample is taken after expiry of the respective heat treatment time from the combustion chamber area and the yield strength Rp0,2, the tensile strength Rm and the elongation at break A at these casting samples at room temperature has been determined.
  • the arithmetic mean of the mechanical properties respectively determined for the casting samples thus treated are given in Table 3.
  • the test results show that after 100 hours, the tensile strength Rm and the yield strength Rp0.2 are substantially stable in the cylinder heads cast from the aluminum casting alloys E1, E2 according to the invention, while the elongation at break A increases.
  • the cylinder heads produced from the comparison alloy each have higher strengths, however their breaking elongation A is in each case significantly lower than the breaking elongation A determined for the samples according to the invention.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (12)

  1. Alliage d'aluminium de fonderie comprenant (en % en poids)
    Cu: 6,0 - 8,0 %,
    Mn: 0,3 - 0,55 %
    Zr : 0,18 - 0,25 %
    Si: 3,0 - 7,0 %,
    Ti: 0,05 - 0,2 %,
    Sr: jusqu'à 0,03 %,
    V: jusqu'à 0,04 %,
    Fe: jusqu'à 0,25 %,
    le reste étant de l'aluminium et des impuretés inévitables.
  2. Alliage d'aluminium de fonderie selon la revendication 1, caractérisé en ce que sa teneur en Si est inférieure à 5,0 % en poids.
  3. Alliage d'aluminium de fonderie selon la revendication 2, caractérisé en ce que sa teneur en Si est au moins de 3,5 % en poids.
  4. Alliage d'aluminium de fonderie selon la revendication 1, caractérisé en ce que sa teneur en Si est au moins de 5,0 % en poids.
  5. Alliage d'aluminium de fonderie selon la revendication 4, caractérisé en ce que sa teneur en Si est au moins de 5,5 % en poids.
  6. Alliage d'aluminium de fonderie selon l'une quelconque des revendications précédentes, caractérisé en ce que sa teneur en Cu est tout au plus de 7,0 % en poids.
  7. Alliage d'aluminium de fonderie selon l'une quelconque des revendications précédentes, caractérisé en ce que sa teneur en Mn est de 0,4 - 0,55 % en poids.
  8. Alliage d'aluminium de fonderie selon l'une quelconque des revendications précédentes, caractérisé en ce que sa teneur en Zr est de 0,2 - 0,25 % en poids.
  9. Alliage d'aluminium de fonderie selon l'une quelconque des revendications précédentes, caractérisé en ce que sa teneur en Ti est de 0,08 - 0,12 % en poids.
  10. Alliage d'aluminium de fonderie selon l'une quelconque des revendications précédentes, caractérisé en ce que sa teneur en Sr est au moins de 0,015 % en poids.
  11. Pièce coulée pour un moteur à combustion interne, coulée à partir d'un alliage d'aluminium de fonderie réalisé selon l'une quelconque des revendications 1 à 10.
  12. Pièce coulée selon la revendication 11, caractérisée en ce qu'elle est une tête de cylindre.
EP14744487.1A 2013-07-22 2014-07-15 Alliage d'aluminium de fondèrie résistant a haute temperature et pièce de fonderie pour moteurs a combustion interne utilisant cet alliage Active EP3024958B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14744487T PL3024958T3 (pl) 2013-07-22 2014-07-15 Żarowytrzymały odlewniczy stop aluminium i odlew do silników spalinowych odlewany z takiego stopu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013107810.9A DE102013107810A1 (de) 2013-07-22 2013-07-22 Hochwarmfeste Aluminiumgusslegierung und Gussteil für Verbrennungsmotoren gegossen aus einer solchen Legierung
PCT/EP2014/065130 WO2015010956A1 (fr) 2013-07-22 2014-07-15 Alliage pour coulée en aluminium résistant aux hautes températures et pièce coulée pour moteurs à combustion interne coulée à partir d'un tel alliage

Publications (2)

Publication Number Publication Date
EP3024958A1 EP3024958A1 (fr) 2016-06-01
EP3024958B1 true EP3024958B1 (fr) 2018-01-03

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Country Status (15)

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US (1) US9663848B2 (fr)
EP (1) EP3024958B1 (fr)
JP (1) JP6101402B2 (fr)
KR (1) KR101718118B1 (fr)
CN (1) CN105408510A (fr)
BR (1) BR112015018372B1 (fr)
DE (1) DE102013107810A1 (fr)
ES (1) ES2662347T3 (fr)
HU (1) HUE036331T2 (fr)
MX (1) MX2015016249A (fr)
PL (1) PL3024958T3 (fr)
RU (1) RU2606141C1 (fr)
TR (1) TR201802630T4 (fr)
WO (1) WO2015010956A1 (fr)
ZA (1) ZA201505425B (fr)

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Publication number Priority date Publication date Assignee Title
US11220729B2 (en) 2016-05-20 2022-01-11 Ut-Battelle, Llc Aluminum alloy compositions and methods of making and using the same
US11242587B2 (en) 2017-05-12 2022-02-08 Ut-Battelle, Llc Aluminum alloy compositions and methods of making and using the same
CN107400809A (zh) * 2017-07-31 2017-11-28 江苏大学 锆锶复合微合金化的高强韧耐腐蚀低硅含量铝硅铜系铸造铝合金及制备方法
WO2019084320A1 (fr) 2017-10-26 2019-05-02 Amit Shyam Traitements thermiques pour alliages d'aluminium coulés à haute température
CN109402473B (zh) * 2018-12-11 2019-12-03 贵州大学 一种具有高Fe含量的Al-Si-Cu-Mn耐热铝合金及其制备方法
KR20200082875A (ko) 2018-12-31 2020-07-08 주식회사 팔 알루미늄 합금을 이용한 브레이크 캘리퍼의 제조 방법
CN110592448B (zh) * 2019-08-27 2021-06-22 江苏大学 耐热耐腐蚀2219型铝合金及其制备方法
WO2021192417A1 (fr) * 2020-03-26 2021-09-30 株式会社村田製作所 Transducteur ultrasonore
TW202342198A (zh) * 2022-01-25 2023-11-01 荷蘭商Ａｓｍ Ｉｐ私人控股有限公司 基板處置腔室主體、半導體處理系統、及製造基板處置腔室主體的方法

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JPH04202737A (ja) * 1990-11-30 1992-07-23 Showa Alum Corp 強度に優れた耐摩耗性アルミニウム合金
JP4132293B2 (ja) * 1997-10-15 2008-08-13 株式会社豊田中央研究所 耐疲労特性に優れたアルミニウム合金
US6419769B1 (en) * 1998-09-08 2002-07-16 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Aluminum-silicon alloy having improved properties at elevated temperatures and process for producing cast articles therefrom
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RU2224811C2 (ru) * 2002-06-03 2004-02-27 Татьяна Николаевна Легкая Литейный сплав на основе алюминия
FR2857378B1 (fr) * 2003-07-10 2005-08-26 Pechiney Aluminium Piece moulee en alliage d'aluminium a haute resistance a chaud
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RU2329321C2 (ru) * 2006-05-10 2008-07-20 Новосибирский государственный технический университет Антифрикционный сплав на основе алюминия
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DE102011083968A1 (de) 2011-10-04 2013-04-04 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Motorbauteils und Motorbauteil

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Publication number Publication date
BR112015018372A2 (pt) 2017-07-18
BR112015018372B1 (pt) 2020-02-04
TR201802630T4 (tr) 2018-03-21
EP3024958A1 (fr) 2016-06-01
MX2015016249A (es) 2016-03-11
ZA201505425B (en) 2016-04-28
WO2015010956A1 (fr) 2015-01-29
KR20160048777A (ko) 2016-05-04
DE102013107810A1 (de) 2015-02-19
JP2016531198A (ja) 2016-10-06
CN105408510A (zh) 2016-03-16
KR101718118B1 (ko) 2017-03-20
PL3024958T3 (pl) 2018-07-31
HUE036331T2 (hu) 2018-06-28
US20160168665A1 (en) 2016-06-16
US9663848B2 (en) 2017-05-30
RU2606141C1 (ru) 2017-01-10
ES2662347T3 (es) 2018-04-06
JP6101402B2 (ja) 2017-03-22

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