WO2009010264A2 - Alliage de fonderie d'aluminium et utilisation - Google Patents

Alliage de fonderie d'aluminium et utilisation Download PDF

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Publication number
WO2009010264A2
WO2009010264A2 PCT/EP2008/005744 EP2008005744W WO2009010264A2 WO 2009010264 A2 WO2009010264 A2 WO 2009010264A2 EP 2008005744 W EP2008005744 W EP 2008005744W WO 2009010264 A2 WO2009010264 A2 WO 2009010264A2
Authority
WO
WIPO (PCT)
Prior art keywords
alloy
aluminum
casting
alloy according
weight
Prior art date
Application number
PCT/EP2008/005744
Other languages
German (de)
English (en)
Other versions
WO2009010264A3 (fr
Inventor
Babette Tonn
Hennadiy Zak
Mehdi Asadi
Original Assignee
Technische Universität Clausthal
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.)
Filing date
Publication date
Application filed by Technische Universität Clausthal filed Critical Technische Universität Clausthal
Priority to EP08773992A priority Critical patent/EP2173916A2/fr
Publication of WO2009010264A2 publication Critical patent/WO2009010264A2/fr
Publication of WO2009010264A3 publication Critical patent/WO2009010264A3/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
    • 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
    • C22F1/043—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 silicon as the next major constituent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/90—Alloys not otherwise provided for
    • F05C2201/903—Aluminium alloy, e.g. AlCuMgPb F34,37

Definitions

  • the present invention relates to a new high and heat resistant aluminum-silicon casting alloy with high thermal conductivity, which is suitable for the production of engine components, in particular for casting cylinder heads and cylinder crankcases.
  • AI casting alloys are known in particular in engine construction. AI castings are widely used because of their low specific gravity, ease of molding and ease of processing. Also, through various casting methods, complicated workpieces such as e.g. Make pistons, cylinder heads, crankcases or engine blocks.
  • a proven alloy group for the production of engine components are Al-Si alloys. These materials are typically with silicon contents between 4.5 and 18 wt .-%, in some cases up to 24 wt .-%, and with admixtures of magnesium 0.1 to 1, 5 wt.%, Copper between 1 and 4 wt.
  • the improvement of the mechanical strength is in this case a deterioration of the thermal shock resistance and the fatigue behavior due to excessive contents on alloying elements such as silicon, copper, magnesium.
  • the cylinder heads are subject to high thermo-mechanical loads under operating stress. Since the heat dissipation one of the essential
  • the thermal conductivity can affect its life more than the increase in strength or ductility of the cylinder head alloy.
  • the patent DE 199 25 666 C1 discloses an aluminum cylinder head alloy with 6.80 to 7.20 wt .-% silicon, 0.35 to 0.45 wt .-% magnesium, 0.35 to 0.45 wt .-% Iron, 0.30 to 0.40 wt% copper, 0.45 to 0.55 wt% nickel and 0.11 to 0.15 wt% titanium.
  • the too low copper content of this alloy can not meet the high demands on the heat resistance at temperatures above 250 ° C. With long-term thermal stress already above 150 ° C., strength losses of more than 30% occur.
  • the aluminum-silicon alloys from the group EN AC-45000 to EN AC-45400 are known. These alloys contain from 4.5 to 7% by weight of silicon, from 1 to 5% by weight of copper, from 0.5 to 1% by weight of iron, from 0.05 to 0.65% by weight of magnesium and from 0.15 to 2% by weight of zinc. Although these alloys have good mechanical properties due to the high copper and magnesium contents, they have poor thermal conductivity.
  • DE 691 10 018 T2 discloses a high-strength cast aluminum alloy with 2.5 to 4.4 wt.% Si, 1, 5 to 2.5 wt.% Cu and 0.2 to 0.5 wt.% Mg, which should improve the alloy in terms of toughness and strength.
  • this alloy is not satisfactory in terms of its thermal conductivity.
  • the invention has for its object to provide a suitable for the production of engine components alloy having a high thermal conductivity, high strength, heat resistance, good creep strength and sufficient ductility with low susceptibility to corrosion and is also inexpensive.
  • This object is achieved by targeted adjustment of a silicon content of 2.6 to 4.5 wt .-% of a copper content of 0.5 to 3 wt .-% of a magnesium content of 0.001 to 0.3 wt.% Of a zirconium content of
  • alloy Barium, nitrogen, carbon dissolved, wherein the alloy is preferably a
  • thermo-mechanical properties is when the alloy contains from 0.001 to 0.19% by weight of magnesium.
  • the silicon content is particularly preferably 3.0 to 4.5 wt .-%.
  • thermo-mechanical behavior HCF and TMF
  • the thermal conductivity of the alloy at 250 0 C is at least 190 W / mK, more preferably at least 198 WVmK, that is adjusted thereto.
  • the silicon content according to the invention By adjusting the silicon content according to the invention, it is possible to set the concentration limits of important strength-increasing alloying elements, such as copper, titanium, zirconium, iron, manganese, chromium, cobalt, molybdenum and depending on the application of other transition elements relatively high, without affecting the thermal conductivity noticeably.
  • the alloy according to the invention has excellent thermal conductivity values, which represent an important life-time criterion when using the cylinder head alloys. This gives better thermal shock resistance and better fatigue behavior under thermomechanical stress for this alloy.
  • the elements silicon, magnesium, manganese, iron, cobalt, copper, zinc, nickel, vanadium, niobium, molybdenum, chromium, tungsten, beryllium, lead, lithium, yttrium, cerium, scandium, hafnium, silver, zirconium, titanium, Boron, strontium, sodium, potassium, calcium, antimony, sulfur, barium, nitrogen, carbon, it is possible to tailor the properties of the alloy according to the invention to the intended use. For example, the additions of transition elements give the casting a high creep strength and structural strength at elevated temperature, so that no distortion is to be expected during demoulding.
  • the alloy contains at least 0.01, more preferably at least 0.03, more preferably at least 0.1, even more preferably at least 0.2% by weight zirconium.
  • AI3Zr Phases of high thermal stability by the presence of the dispersion hardening is maintained at temperatures between 150 0 C and 400 0 C and contributes to the thermo-mechanical stability of the casting alloy according to the invention.
  • zirconium converts the plate-shaped intermetallic phases, which are particularly in the presence of iron, into Chinese-type forms, which also contributes to improving the elongation at break and thermal conductivity of the alloy according to the invention.
  • the zirconium content of the alloy is preferably from 0.001 to 0.8% by weight, more preferably from 0.03 to 0.8% by weight, more preferably from 0.1 to 0.8% by weight, further preferably from 0.2 to 0.8 wt .-%, more preferably 0.3 to 0.5 wt .-%, more preferably 0.001 to 0.5 wt .-%, further preferably 0.03 to 0.5 wt .-%.
  • Copper (Cu) preferably in an amount of 0.5 to 3 wt .-%, in particular 1 to
  • Iron (Fe) preferably in an amount of 0 to 1, 4 wt .-%, in particular 0.2 to
  • Manganese (Mn) preferably in an amount of 0.001 to 0.6 wt .-%, in particular
  • Titanium (Ti) preferably in an amount of 0.001 to 0.3 wt .-%, in particular 0.1 to 0.2 wt .-%;
  • Co Co
  • Co Co preferably in an amount of 0.001 to 0.5 wt .-%, in particular 0.1 to 0.4 wt .-%;
  • Chromium (Cr) preferably in an amount of 0.001 to 0.5 wt .-%, in particular
  • Beryllium (Be) preferably in an amount of 0.0001 to 0.2 wt .-%, in particular 0.005 to 0.1 wt .-%;
  • Zinc (Zn) preferably in an amount of 0.001 to 3 wt .-%, in particular 0.3 to 2 wt .-%;
  • Tungsten (Wo) preferably in an amount of 0.001 to 0.6 wt .-%, in particular
  • Nickel (Ni) preferably in an amount of 0.001 to 1, 5 wt%, in particular 0.5 to 1, 0 wt .-%;
  • Vanadium (V) preferably in an amount of 0.001 to 0.3 wt .-%, in particular
  • Hafnium (Hf) preferably in an amount of 0.0001 to 0.2 wt .-%, in particular
  • Niobium (Nb) preferably in an amount of 0.0001 to 0.3 wt .-%, in particular
  • Lead (Pb) preferably in an amount of 0.0001 to 0.2 wt .-%, in particular
  • Strontium (Sr) preferably in an amount of 0.0001 to 0.06 wt .-%, in particular 0.005 to 0.04 wt .-%;
  • Sodium (Na) preferably in an amount of 0.0001 to 0.01, especially 0.002 to 0.005 wt .-%;
  • Calcium (Ca) preferably in an amount of 0.0001 to 0.006 wt .-%, in particular 0.002 to 0.004 wt .-%; Boron (B) preferably in an amount of 0.0001 to 0.08, in particular 0.01 to
  • Cer (Ce) preferably in an amount of 0.0001 to 0.4 wt .-%, in particular 0.05 to 0.3 wt .-%
  • Scandium (Sc) preferably in an amount of 0.0001 to 0.6 wt .-%, in particular 0.05 to 0.3 wt .-%
  • Carbon preferably in an amount of 0.0001 to 0.006 wt .-%, in particular 0.0005 to 0.003 wt .-%;
  • Nitrogen (N) preferably in an amount of 0.0001 to 0.006 wt .-%, in particular 0.0005 to 0.003 wt .-%.
  • the alloy according to the invention may contain from 0.1 to 1.4% by weight of iron.
  • the high iron content in die casting is used to reduce the adhesion tendency.
  • Al-Si eutectic and the precipitation of Al 2 Cu and Mg 2 Si phases in the alloy according to the invention which in turn are influenced by a suitable heat treatment.
  • the limitation of the magnesium content to a maximum of 0.3 wt .-%, preferably 0.19 wt .-%, causes the elongation values of the alloy according to the invention in the casting state does not fall below 4%.
  • the magnesium content In order to achieve a significantly higher elongation, however, the magnesium content must be limited to a maximum of 0.15% by weight, more preferably to a maximum of 0.1% by weight.
  • the setting of the lowest possible magnesium contents also ensures at the same time excellent thermal conductivity of the alloy according to the invention.
  • a certain amount of titanium or boron and / or carbon in combination with titanium is used for grain refining, the addition of these elements with aluminum-titanium, aluminum-boron, aluminum-titanium-boron and aluminum-titanium-carbon Pre-alloys takes place.
  • the ⁇ -aluminum mixed crystal can also be grain-refined by zirconium additions of 0.2 to 0.8 wt%.
  • a good grain refining contributes significantly to the improvement of the mechanical properties and castability of the alloy according to the invention.
  • the master alloys AITi6, AIB4, AITi3C0,15, AIZMO and AITiI, 8B1, 8 were particularly effective.
  • the melt can be degassed by flushing gas, purge gas tablets or by vacuum.
  • castings produced from the alloy according to the invention can be subjected to all heat treatments.
  • Exemplary embodiment chill casting
  • the above-mentioned alloy was used in a mold according to DIN 29531 at the casting temperature of
  • the drained sample rods were stored ahead of an additional 100 hours at 250 0 C for all alloys.
  • Table 1 gives a comparison of the alloy according to the invention with conventional alloys for engine components.
  • the determination of the thermal diffusivity was carried out with a laser flash apparatus.
  • the specific heat capacity was determined with a high-temperature calorimeter.
  • Table 1 gives a comparison of the alloy according to the invention with conventional alloys for engine components.

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

Abstract

L'invention concerne un alliage de fonderie d'aluminium et de silicium très résistant et résistant à la chaleur, présentant une bonne conductivité thermique, notamment destiné à la fabrication de composants moteur, en particulier au coulage de têtes de cylindres et de carters de manivelles de cylindres. L'alliage selon l'invention présente la composition suivante: 2,6 à 4,5 % en poids de silicium; 0,5 à 3 % en poids de cuivre; 0,001 à 0,3 % en poids de magnésium; 0,001 à 0,8 % en poids de zircon; éventuellement un ou plusieurs des éléments suivants, manganèse, fer, cobalt, zinc, nickel, vanadium, niobium, béryllium, lithium, yttrium, cérium, scandium, hafnium, argent, titane, strontium, sodium, potassium, calcium, antimoine, soufre, baryum, bore, azote et carbone dans une quantité de 0 à 4 %; et de l'aluminium et les impuretés inévitables en tant que reste. L'alliage selon l'invention présente une conductivité thermique de plus de 178 W/mK à 250° C obtenue au moyen de la composition citée.
PCT/EP2008/005744 2007-07-18 2008-07-14 Alliage de fonderie d'aluminium et utilisation WO2009010264A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08773992A EP2173916A2 (fr) 2007-07-18 2008-07-14 Alliage de fonderie d'aluminium et utilisation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007033827.0 2007-07-18
DE102007033827A DE102007033827A1 (de) 2007-07-18 2007-07-18 Aluminium-Gusslegierung und deren Verwendung

Publications (2)

Publication Number Publication Date
WO2009010264A2 true WO2009010264A2 (fr) 2009-01-22
WO2009010264A3 WO2009010264A3 (fr) 2009-04-09

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Country Status (3)

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EP (1) EP2173916A2 (fr)
DE (1) DE102007033827A1 (fr)
WO (1) WO2009010264A2 (fr)

Cited By (14)

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CN101942585A (zh) * 2010-10-11 2011-01-12 湖南江滨机器（集团）有限责任公司 铝合金和柴油机活塞
CN102041415A (zh) * 2009-10-26 2011-05-04 浙江艾默樱零部件有限公司 耐高温铝合金炉头合金及其制作方法
CN102978476A (zh) * 2012-11-09 2013-03-20 安徽欣意电缆有限公司 Al-Fe-Re-RE铝合金及其制备方法和电力电缆
CN102978466A (zh) * 2012-11-09 2013-03-20 安徽欣意电缆有限公司 Al-Fe-Zr-RE铝合金及其制备方法和电力电缆
CN103103397A (zh) * 2012-11-09 2013-05-15 安徽欣意电缆有限公司 Al-Fe-Cd-RE铝合金及其制备方法和电力电缆
CN103469020A (zh) * 2013-08-12 2013-12-25 安徽盛达前亮铝业有限公司 一种低膨胀铝合金型材及其制造方法
CN105506408A (zh) * 2015-12-18 2016-04-20 百色学院 一种用于汽车板材的压铸铝合金及其生产工艺
US9366181B2 (en) * 2009-07-20 2016-06-14 Borgwarner Inc. Turbocharger and compressor wheel therefor
CN107130152A (zh) * 2017-06-06 2017-09-05 合肥饰界金属制品有限公司 高韧性铝合金材料及其制备方法
CN111560549A (zh) * 2020-05-18 2020-08-21 新沂天源节能材料有限公司 一种高强度耐磨损铝合金门窗及其制造方法
CN112063899A (zh) * 2020-09-14 2020-12-11 肇庆新联昌金属实业有限公司 一种高塑性铝合金及其制备方法
CN113652581A (zh) * 2021-07-30 2021-11-16 佛山职业技术学院 一种铝合金及其制备方法和应用
CN114395704A (zh) * 2021-12-24 2022-04-26 安顺学院 一种利用热等静压技术提高铝合金铸件致密度的方法
CN117127063A (zh) * 2023-07-26 2023-11-28 上海励益铝业有限公司 一种耐振动疲劳铝合金及其制备方法

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CN103725939A (zh) * 2013-12-17 2014-04-16 芜湖万润机械有限责任公司 一种复印机热辊用铝合金型材的制备方法
CN104233022B (zh) * 2014-09-28 2017-01-18 国网河南省电力公司周口供电公司 电缆用铝合金导体材料及其退火工艺
CN106399727B (zh) * 2016-11-28 2019-04-05 宁波瑞铭机械有限公司 一种针棒连动杆
CN106498224A (zh) * 2016-11-28 2017-03-15 宁波瑞铭机械有限公司 一种压布脚
CN107675038B (zh) * 2017-09-26 2019-04-23 沈阳航空航天大学 一种轻质铸造Al-Si-Li-Cu合金材料及其制备方法
CN110184509B (zh) * 2019-07-06 2020-07-03 佛山市高盾金属有限公司 一种性能优异的铝合金及其制品
CN111485146B (zh) * 2020-04-21 2021-07-20 华南理工大学 一种高导热高强度低Si铸造铝合金及其制备方法
CN111809085A (zh) * 2020-07-15 2020-10-23 宣城建永精密金属有限公司 高压电气系统传动箱及其铸造工艺

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KR101829292B1 (ko) * 2009-07-20 2018-03-29 보르그워너 인코퍼레이티드 터보차저 및 이를 위한 압축기 휠
US9366181B2 (en) * 2009-07-20 2016-06-14 Borgwarner Inc. Turbocharger and compressor wheel therefor
CN102041415A (zh) * 2009-10-26 2011-05-04 浙江艾默樱零部件有限公司 耐高温铝合金炉头合金及其制作方法
CN101942585A (zh) * 2010-10-11 2011-01-12 湖南江滨机器（集团）有限责任公司 铝合金和柴油机活塞
CN103103397A (zh) * 2012-11-09 2013-05-15 安徽欣意电缆有限公司 Al-Fe-Cd-RE铝合金及其制备方法和电力电缆
CN102978476A (zh) * 2012-11-09 2013-03-20 安徽欣意电缆有限公司 Al-Fe-Re-RE铝合金及其制备方法和电力电缆
CN102978466B (zh) * 2012-11-09 2015-08-19 安徽欣意电缆有限公司 Al-Fe-Zr-RE铝合金及其制备方法和电力电缆
CN102978466A (zh) * 2012-11-09 2013-03-20 安徽欣意电缆有限公司 Al-Fe-Zr-RE铝合金及其制备方法和电力电缆
CN103469020A (zh) * 2013-08-12 2013-12-25 安徽盛达前亮铝业有限公司 一种低膨胀铝合金型材及其制造方法
CN105506408A (zh) * 2015-12-18 2016-04-20 百色学院 一种用于汽车板材的压铸铝合金及其生产工艺
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