EP1972696B1 - Utilisation d'un alliage d'aluminium de fonderie pour la production de têtes de cylindres dans les moteurs à combustion - Google Patents

Utilisation d'un alliage d'aluminium de fonderie pour la production de têtes de cylindres dans les moteurs à combustion Download PDF

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Publication number
EP1972696B1
EP1972696B1 EP20080002909 EP08002909A EP1972696B1 EP 1972696 B1 EP1972696 B1 EP 1972696B1 EP 20080002909 EP20080002909 EP 20080002909 EP 08002909 A EP08002909 A EP 08002909A EP 1972696 B1 EP1972696 B1 EP 1972696B1
Authority
EP
European Patent Office
Prior art keywords
weight
cylinder heads
gew
alloy
combustion engines
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
Application number
EP20080002909
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German (de)
English (en)
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EP1972696A1 (fr
Inventor
Franz-Josef Dr. Klinkenberg
Sebastian Thalmair
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1972696A1 publication Critical patent/EP1972696A1/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
    • 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

  • AlSiCu alloys AlSiMg alloys are mostly used, which have a favorable strength / expansion ratio after the heat treatment.
  • JP 59056559 A JP JP 11217647 A . JP 05208296 A . EP-A 1 715 084 A1.
  • the relevant state of the art also includes z.
  • this alloy has the significant disadvantage that it has a very low heat resistance or aging resistance, which is expressed in the TMF (Thermo Mechanical Fatigue) or thermomechanical fatigue test by a low dynamic strength component.
  • the object of the invention is to provide a use of a known aluminum casting alloy, wherein thermal shock resistance and good castability are required.
  • the Al casting alloy according to claim 1 has a good castability while avoiding, at least significant reduction of brittle phase components that promote the crack initiation and crack propagation in the thermo-mechanical fatigue. At the same time it has a high heat resistance / aging resistance. However, despite its high resistance to aging, it is associated with an output strength reduction to achieve high lifetimes.
  • the silicon content 4.5 to 6.0 wt.%, Brittle phases are avoided with sufficient castability.
  • the low copper content of at most 0.45, preferably at most 0.35 wt.% To avoid brittle phases, but at the same time ensures a low initial strength with sufficient heat resistance.
  • the castings of the alloy according to claim 1 are preferably subjected to a heat treatment consisting of a solution annealing between 470 to 540 ° C, quenching with water and optionally air and then a hot curing for several hours at about 160 to 250 ° C.
  • the casting alloy according to claim 1 is particularly suitable for chill casting, especially for the core components of internal combustion engines, in particular the engine block / crankcase and cylinder head and, especially in the automotive industry. Due to the high heat resistance / aging resistance, it is particularly suitable for engine core components with constraint-intensive component geometry, ie for engines with closely spaced combustion chambers and tightly dimensioned valve webs.
  • the damage parameter (P SWT ) according to Smith, Watson and Topper was determined at a maximum temperature of 250 ° C and a minimum temperature of 50 ° C, which is a measure of the damage and derived for the aging resistance.
  • the load cycle time of the specimens was determined.
  • specimens were prepared from several cylinder heads, which were cast from the aforementioned AlSi7Mg alloy of the standard composition (DIN EN AB 42100) and subjected to the same heat treatment.
  • specimens were made of a plurality of cylinder heads made of an alloy similar to the AlSi7Mg alloy mentioned in the above-mentioned Comparative Example 1, except that instead of a copper content of less than 0.02 wt.%, a copper content of 0.45 to 0.55 wt.% had.
  • the damage parameter (P SWT ) and the number of cycles were determined under the same conditions as in Example 1.
  • alloy Damage parameter P SWT in MPa Load cycle number N example 0.29 to 0.38 2650 to 4100 AlSi5 Mean 0.35 Mean 3555
  • Example 1 0.22 to 0.27 1710 to 3300 AlSi 7Mg Mean 0.22 Mean 2555
  • Example 2 0.41 to 0.53 1580 to 2250 AlSi 7MgCu0,5 Mean 0.48 Means 1900
  • the thermal conductivity of the alloy was determined according to claim 1. It is at the same high level as the thermal conductivity of the alloy 1 and significantly higher than that of the alloy according to Comparative Example 2.

Landscapes

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

Claims (2)

  1. Utilisation d'un alliage d'aluminium coulé composé de : 4,5-6,0 % pondéraux de silicium,
    0,20-055 % pondéraux de magnésium,
    0-0,20 % pondéraux de titane,
    moins de 0,30 % pondéraux de fer,
    du manganèse jusqu'à un maximum de 2/3 de la teneur en fer,
    0,10-0,45 % pondéraux de cuivre,
    moins de 0,07 % pondéraux de zinc,
    de l'aluminium pour le complément, ainsi que les inévitables impuretés,
    séparément au maximum 0,03 % pondéraux et en tout au maximum 0,1 % pondéraux pour la fabrication de têtes de cylindre pour des moteurs à combustion.
  2. Utilisation selon la revendication 1, selon laquelle l'alliage de fonderie d'aluminium contient entre :
    0,25-0,45 % pondéraux de magnésium,
    0,05-0,10 % pondéraux de titane,
    moins de 0,15 % pondéraux de fer, et/ou
    0,15-0,35 % pondéraux de cuivre.
EP20080002909 2007-03-15 2008-02-16 Utilisation d'un alliage d'aluminium de fonderie pour la production de têtes de cylindres dans les moteurs à combustion Active EP1972696B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710012423 DE102007012423A1 (de) 2007-03-15 2007-03-15 Aluminium-Gusslegierung

Publications (2)

Publication Number Publication Date
EP1972696A1 EP1972696A1 (fr) 2008-09-24
EP1972696B1 true EP1972696B1 (fr) 2010-09-01

Family

ID=39278445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080002909 Active EP1972696B1 (fr) 2007-03-15 2008-02-16 Utilisation d'un alliage d'aluminium de fonderie pour la production de têtes de cylindres dans les moteurs à combustion

Country Status (2)

Country Link
EP (1) EP1972696B1 (fr)
DE (2) DE102007012423A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009032588A1 (de) 2009-07-10 2011-02-17 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Herstellung eines Gussbauteils
DE102010060670A1 (de) * 2010-11-19 2012-05-24 Martinrea Honsel Germany Gmbh Zylinderkopf für Verbrennungsmotoren aus einer Aluminiumlegierung
DE102011112005A1 (de) * 2011-08-29 2013-02-28 Audi Ag Aluminium-Silizium-Legierung
CN107868889B (zh) * 2016-09-23 2020-04-24 比亚迪股份有限公司 铝合金及其制备方法和应用以及车辆车身骨架连接件和电动汽车
CN112575230B (zh) * 2020-11-25 2022-02-18 南方科技大学 一种半固态压铸铝合金及其制备方法和用途

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5718930B2 (fr) * 1973-12-26 1982-04-20
JPS5918469B2 (ja) * 1980-08-21 1984-04-27 株式会社神戸製鋼所 光輝アルマイト性及び強度に優れたアルミニウム合金板の製造方法
JPS5956559A (ja) 1982-09-27 1984-04-02 Mitsubishi Alum Co Ltd 自然発色アルミニウム合金材
JPS601577A (ja) * 1983-06-17 1985-01-07 Hitachi Koki Co Ltd 半導体レ−ザの寿命検出装置
DD240031A1 (de) * 1985-08-06 1986-10-15 Mansfeld Kombinat W Pieck Veb Al-legierung fuer katodenfolie in elektrolytkondensatoren
JPS63100151A (ja) * 1986-04-04 1988-05-02 Hitachi Metals Ltd アルミニウム合金部材とその複合加工方法
JPH01176046A (ja) * 1987-12-28 1989-07-12 Furukawa Alum Co Ltd アルミニウム合金ブレージングシート
JPH03211247A (ja) * 1990-01-11 1991-09-17 Furukawa Alum Co Ltd 加工用アルミニウム合金
JPH05208296A (ja) 1992-01-30 1993-08-20 Kobe Steel Ltd 金型用アルミニウム合金溶加材
JP3107517B2 (ja) 1995-03-30 2000-11-13 株式会社神戸製鋼所 切削性に優れる高耐食アルミニウム合金押出材
DE19925666C1 (de) * 1999-06-04 2000-09-28 Vaw Motor Gmbh Zylinderkopf- und Motorblockgußteil
DE10026626C5 (de) 1999-06-04 2006-10-05 Vaw Aluminium Ag Zylinderkopf- und Motorblockgußteil
JP2001303163A (ja) * 2000-04-27 2001-10-31 Toyota Central Res & Dev Lab Inc 引張平均応力下での疲労強度に優れた合金
NO20016355D0 (no) * 2001-12-21 2001-12-21 Norsk Hydro As Aluminium kjöleribbe med forbedret styrke og bestandighet
FR2841164B1 (fr) * 2002-06-25 2004-07-30 Pechiney Aluminium Piece moulee en alliage d'alluminium a haute resistance au fluage
DE10323741B3 (de) 2003-05-24 2004-10-14 Daimlerchrysler Ag Hoch- und warmfeste, zähe Al-Gusslegierungen
WO2005049896A1 (fr) 2003-11-21 2005-06-02 Showa Denko K.K. Alliage d'aluminium, materiau en forme de barre, objet moule forge et objet moule usine et alliage d'aluminium fabrique a partir de ces materiaux et resistant a l'usure ainsi que partie coulissante possedant d'excellentes proprietes en termes de durete de revetement d'oxydes anodique et procede de fabrication correspondant

Also Published As

Publication number Publication date
EP1972696A1 (fr) 2008-09-24
DE102007012423A1 (de) 2008-09-18
DE502008001226D1 (de) 2010-10-14

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