EP1978120A1 - Alliage de fonte, d'aluminium et de silice et son procédé de fabrication - Google Patents

Alliage de fonte, d'aluminium et de silice et son procédé de fabrication Download PDF

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Publication number
EP1978120A1
EP1978120A1 EP08075254A EP08075254A EP1978120A1 EP 1978120 A1 EP1978120 A1 EP 1978120A1 EP 08075254 A EP08075254 A EP 08075254A EP 08075254 A EP08075254 A EP 08075254A EP 1978120 A1 EP1978120 A1 EP 1978120A1
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Prior art keywords
aluminum
carbon
alloy
silicon
weight
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EP08075254A
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German (de)
English (en)
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EP1978120B1 (fr
Inventor
Kostyantyn Gzovsky Dr.-Ing.
Dr.-Ing. Babette Tonn Prof.
Hennadiy Zak Dr.-Ing.
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Technische Universitaet Clausthal
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Technische Universitaet Clausthal
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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
    • C22C21/02—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

  • the invention relates to high and heat resistant silicon-containing aluminum casting alloys, their production and their use for the production of engine components.
  • Al casting alloys are known. Al castings are widely used because of their low specific weight, 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.
  • Al-Si alloys A proven alloy group for the production of engine components are Al-Si alloys. These materials are typically with silicon contents between 6 and 18 wt .-%, in some cases up to 24 wt .-% and with admixtures of magnesium from 1 to 1.5 wt .-%, copper between 1 and 4 wt .-% and often nickel between 1 to 3 wt .-% alloyed (catalog "aluminum casting alloys", VAW-IMCO).
  • a heat resistant alloy with reduced specific gravity is used in the DE-PS 747 355 described as particularly advantageous for pistons.
  • This material is characterized by a magnesium content between 4 and 12 wt.% And a silicon content between 0.5 and 5 wt .-% of. Furthermore, between 0.2 and 5 wt .-% copper and / or nickel may be alloyed.
  • the high magnesium content leads to gas porosity due to the strong hydrogen absorption. The additional oxidation also involves the risk of oxide inclusions, which significantly degrade the mechanical properties of the casting.
  • the invention has for its object to provide a suitable alloy for the production of engine components, which has high strength, heat resistance, good creep strength and sufficient ductility with low susceptibility to corrosion and is also inexpensive.
  • This object is inventively by the selective adjustment of carbon in the Al-Si alloys in effective amounts of from 0.0007 to 0.1 wt .-%, preferably from 0.0007 to 0.05 wt .-%, more preferably 0.001 to 0.05 wt .-%, more preferably 0.001 to 0.01 wt .-%, more preferably 0.001 to 0.005 wt .-% dissolved.
  • the aluminum-silicon casting alloy contains 5 to 18 wt .-%, in particular 12.5 to 14.5 wt .-% silicon.
  • the aluminum-silicon casting alloy according to the invention is preferably characterized by the fact that in its microstructure fine primary silicon (less than 50 ⁇ m) and refined eutectic are present simultaneously, as can be seen from the micrograph. This condition is particularly desirable in near and hypereutectic Al-Si alloys.
  • the degree of finishing of the eutectic can be visually assessed by the foundry expert on the basis of the forms of formation of the eutectic silicon precipitates, for example with the aid of micrographs.
  • foundry practice No. 11/12 - 1993, page 206 - 209, G. Chai, L. Bifferud, "Effective refining with strontium”.
  • the modifying effect of the carbon on microstructures and properties of the Al-Si alloys was not known until the invention. It has been found that the carbon content according to the invention causes a change in the overall solidification behavior of the Al-Si casting alloys and brings about an excellent microstructure modification. As essential features of the structure modification by carbon are a considerable refining and homogeneous distribution of the intermetallic phases, a good refinement of the Al-Si eutectic and good refining of the primary silicon crystals. This results in a significant improvement of the mechanical and casting technology properties.
  • the melt shows a significantly improved mold filling and flow behavior, and the finished castings can be a significantly increased casting quality and in particular a significantly lower gas porosity can be detected.
  • the basic constituents selected for the composition are melted together.
  • the melting temperature is preferably from 650 ° C to 1000 ° C, more preferably from 720 ° C to 950 ° C. Then it is poured into a mold. "Melted together” also covers the gradual metering of all components into a common melt.
  • Carbon can be used as elemental carbon, e.g. Graphite, but also be added in the form of a compound or master alloy.
  • the carbon content is achieved in particular by adding chemical carbon compounds and / or their mixtures. This can also be done by adding powdered carbides and carbonitrides, also in the form of a sintered product of carbides and carbonitrides.
  • a carbonaceous aluminum master alloy may be incorporated into the melt from the remainder of the alloyed ingredients or may be added in advance to the components to be melted.
  • the carbonaceous additives can contain not only carbon but also phosphorus and / or nitrogen.
  • a particularly preferred method of this invention is to use an aluminum-titanium-carbon master alloy.
  • castings produced from the alloy according to the invention can be subjected to all heat treatments.
  • the aluminum-silicon casting alloys according to the invention are particularly suitable for casting pistons and other machine parts for internal combustion engines, for cylinder heads, crankcases, liners or engine blocks.
  • the solution of the object of the invention therefore also includes these uses.
  • the AlSi12CuNiMg secondary alloy was selected as a representative of the large group of Al-Si casting alloys.
  • the experimental alloy was in cylindrical specimens with a casting temperature of 780 ° C in a reduced to 300 ° C. heated steel mold. Carbon was added using the self-made Al-Ti-C master alloy.
  • a medium-frequency induction furnace was used to produce the AlTi6C1 master alloy.
  • 2000 g of AlTi6 master alloy were first melted at 1400 ° C in a graphite crucible. To this melt was added 30 grams of graphite powder wrapped in aluminum foil.
  • the casting of the Al-Ti-C prealloy thus prepared was carried out after a holding time of about 30 in a copper mold.
  • the master alloy consists of an aluminum matrix, in which Al 3 Ti and TiC particles are embedded.
  • Table 1 shows the composition of the alloys investigated. ⁇ u> Table 1. ⁇ / u> Composition of Al-Si Cast Refining,% by Weight Si C Cu Ni mg Fe Mn Cr Ti Zn Erfg. Leg. 1 12.4 0,003 1.3 0.8 1.4 1.2 0.3 0.15 0.07 0.3 Vergl.Leg. 2 12.6 - 1.5 0.9 1.6 1.3 0.4 0.13 0.05 0.4
  • the secondary alloy AlSi12CuNiMg has very coarse needle-shaped iron-containing phases (predominantly Al5FeSi needles) in the cast structure, Fig. 1 .
  • alloying with the carbon causes both a well-refined eutectic and precipitates of small intermetallic phases in a very uniform distribution, Fig. 2 ,
  • a hypereutectic Al-Si casting alloy was compared to the alloy of the invention having an approximately similar composition, Table 3. Both alloys were treated with an equal amount of phosphorus.
  • Table 3 ⁇ / u> Composition of hypereutectic Al-Si casting alloys, wt% Si Cu C mg Fe Mn Ti Zn P Erfg. Leg. 3 14.1 3.7 0.02 0.33 0.94 0.29 0.21 0.33 0,006 Comp. Leg. 4 14.6 4.1 - 0.32 0.73 0.28 0.22 0.35 0,006
  • the alloy 5 according to the invention has a good strength for a casting alloy, as results from the above-mentioned tabular data.
  • the alloy 5 according to the invention has a significantly better heat resistance than the comparative alloy 6, the R p0.2 value of which drops sharply at 250 ° C. after a preliminary storage at 250 ° C. when the mechanical properties are measured at 250 ° C.
  • heat-resistant we mean here an alloy whose R p0.2 value after storage at 250 ° C. for at least 50 h, tested at 250 ° C., is above 55 MPa.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP20080075254 2007-03-30 2008-03-31 Alliage de fonte, d'aluminium et de silice et son procédé de fabrication Not-in-force EP1978120B1 (fr)

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DE102007015821 2007-03-30

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EP1978120A1 true EP1978120A1 (fr) 2008-10-08
EP1978120B1 EP1978120B1 (fr) 2012-06-06

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Cited By (48)

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Publication number Priority date Publication date Assignee Title
WO2010057702A2 (fr) * 2008-11-19 2010-05-27 Robert Bosch Gmbh Pompe à carburant
EP2236637A2 (fr) 2009-04-03 2010-10-06 Technische Universität Clausthal Corps coulé sous pression en alliage d'aluminium-silicium-fonte hypereutectrique et son procédé de fabrication
FR2950632A1 (fr) * 2009-09-28 2011-04-01 Peugeot Citroen Automobiles Sa Alliages d'aluminium destines a la fonderie sous pression
CN102146542A (zh) * 2011-03-26 2011-08-10 河南理工大学 一种高强高韧铸造Al-Si-Mg合金
CN102433473A (zh) * 2011-12-15 2012-05-02 贵州华科铝材料工程技术研究有限公司 掺杂WB及NaBH4的高强度铝合金及其制备方法
CN102433475A (zh) * 2011-12-15 2012-05-02 贵州华科铝材料工程技术研究有限公司 一种高强高硬铝合金及其制备方法
CN102560206A (zh) * 2012-02-27 2012-07-11 安徽省恒泰动力科技有限公司 一种稀土铝合金活塞材料及其制备方法
CN102644012A (zh) * 2012-05-17 2012-08-22 天津立中合金集团有限公司 共晶铝硅合金活塞材料的制备方法
WO2012110788A3 (fr) * 2011-02-18 2012-10-26 Brunel University Procédé d'affinage d'alliages métalliques
WO2013050464A3 (fr) * 2011-10-04 2013-07-18 Federal-Mogul Nürnberg GmbH Procédé de production d'un élément de moteur et élément de moteur
CN103352978A (zh) * 2013-06-06 2013-10-16 西安科技大学 Al3Ti/Al3Ni颗粒协同增强硅铝基复合活塞及制备方法
EP2653579A1 (fr) * 2012-04-17 2013-10-23 Georg Fischer Druckguss GmbH & Co. KG Alliage d'aluminium
CN103484796A (zh) * 2013-09-30 2014-01-01 龙口市大川活塞有限公司 一种发动机活塞材料及其加工工艺
WO2014158384A1 (fr) * 2013-03-14 2014-10-02 Brunswick Corporation Alliage coulé en sable d'aluminium et de silicium hypereutectique contenant du nickel
EP2865772A1 (fr) * 2013-10-23 2015-04-29 Befesa Aluminio, S.L. Alliage de fonderie d'aluminium
EP2865773A1 (fr) * 2013-10-23 2015-04-29 Befesa Aluminio, S.L. Alliage de fonderie d'aluminium
CN105018796A (zh) * 2014-05-02 2015-11-04 现代自动车株式会社 高弹性铝合金及其制造方法
CN105132761A (zh) * 2015-09-18 2015-12-09 张家港市和伟五金工具厂 一种铝合金
WO2016161908A1 (fr) * 2015-04-10 2016-10-13 上海交通大学 Alliage d'aluminium-silicium auto-renforçant non traité thermiquement et son procédé de préparation
CN106048331A (zh) * 2016-07-28 2016-10-26 董超超 一种性能良好的铝合金汽车轮毂
CN106191563A (zh) * 2016-08-16 2016-12-07 江苏中色锐毕利实业有限公司 一种汽车零部件用硅铝合金及其制备方法
US9650699B1 (en) 2013-03-14 2017-05-16 Brunswick Corporation Nickel containing hypereutectic aluminum-silicon sand cast alloys
CN107012345A (zh) * 2017-04-22 2017-08-04 苏州南尔材料科技有限公司 一种铝硅铜合金的制备方法
CN107083512A (zh) * 2017-03-30 2017-08-22 合肥金同维低温科技有限公司 一种用于制造冰箱压缩机气缸座的铝合金材料
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
CN107641744A (zh) * 2017-09-26 2018-01-30 辽宁忠旺集团有限公司 一种铝合金精炼方法
CN107988569A (zh) * 2017-10-18 2018-05-04 中国航发北京航空材料研究院 一种铝锂合金带筋整体壁板的时效成形方法
EP3342890A1 (fr) 2016-12-28 2018-07-04 Befesa Aluminio, S.L. Alliage de fonderie d'aluminium
EP3342889A1 (fr) 2016-12-28 2018-07-04 Befesa Aluminio, S.L. Alliage de fonderie d'aluminium
EP3342888A1 (fr) 2016-12-28 2018-07-04 Befesa Aluminio, S.L. Alliage de fonderie d'aluminium
CN109280820A (zh) * 2018-10-26 2019-01-29 中国航发北京航空材料研究院 一种用于增材制造的高强度铝合金及其粉末的制备方法
CN109706354A (zh) * 2019-03-08 2019-05-03 安徽信息工程学院 一种具有良好塑性的材料及其制备方法
CN109825745A (zh) * 2019-03-08 2019-05-31 安徽信息工程学院 一种具有高综合性能的合金材料及其制备方法
US10370742B2 (en) 2013-03-14 2019-08-06 Brunswick Corporation Hypereutectic aluminum-silicon cast alloys having unique microstructure
CN110317981A (zh) * 2018-03-28 2019-10-11 通用汽车环球科技运作有限责任公司 高强度高耐磨铸造铝合金
CN111690850A (zh) * 2020-07-15 2020-09-22 南通鸿劲金属铝业有限公司 一种高屈服强度铸造铝合金制备工艺
WO2021034224A1 (fr) * 2019-08-22 2021-02-25 Акционерное Общество "Объединенная Компания Русал Уральский Алюминий" Matériau à base d'aluminium en poudre
CN112553492A (zh) * 2020-11-23 2021-03-26 西安工业大学 一种用于Al-Si系合金组织细化的细化剂制备方法
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WO2023134190A1 (fr) * 2022-01-13 2023-07-20 上海交通大学 Alliage d'aluminium-silicium renforcé coulé sous pression à haute résistance et à haute ténacité non traité thermiquement et son procédé de préparation

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CN104498777A (zh) * 2014-12-09 2015-04-08 上海航天精密机械研究所 一种含稀土元素的zl205a合金的制备方法
US11008640B2 (en) * 2016-11-01 2021-05-18 Uacj Corporation Aluminum alloy for low-pressure casting

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WO2010057702A3 (fr) * 2008-11-19 2010-09-10 Robert Bosch Gmbh Pompe à carburant
WO2010057702A2 (fr) * 2008-11-19 2010-05-27 Robert Bosch Gmbh Pompe à carburant
EP2236637A2 (fr) 2009-04-03 2010-10-06 Technische Universität Clausthal Corps coulé sous pression en alliage d'aluminium-silicium-fonte hypereutectrique et son procédé de fabrication
DE102009016111A1 (de) * 2009-04-03 2010-10-14 Technische Universität Clausthal Übereutektische Aluminium-Silizium-Gusslegierung und Verfahren zu deren Verarbeitung im Druckguss
DE102009016111B4 (de) * 2009-04-03 2011-02-10 Technische Universität Clausthal Druckgusskörper aus einer übereutektischen Aluminium-Silizium-Gusslegierung und Verfahren zu dessen Herstellung
FR2950632A1 (fr) * 2009-09-28 2011-04-01 Peugeot Citroen Automobiles Sa Alliages d'aluminium destines a la fonderie sous pression
WO2012110788A3 (fr) * 2011-02-18 2012-10-26 Brunel University Procédé d'affinage d'alliages métalliques
US10329651B2 (en) 2011-02-18 2019-06-25 Brunel University London Method of refining metal alloys
CN102146542A (zh) * 2011-03-26 2011-08-10 河南理工大学 一种高强高韧铸造Al-Si-Mg合金
WO2013050464A3 (fr) * 2011-10-04 2013-07-18 Federal-Mogul Nürnberg GmbH Procédé de production d'un élément de moteur et élément de moteur
CN102433475A (zh) * 2011-12-15 2012-05-02 贵州华科铝材料工程技术研究有限公司 一种高强高硬铝合金及其制备方法
CN102433473A (zh) * 2011-12-15 2012-05-02 贵州华科铝材料工程技术研究有限公司 掺杂WB及NaBH4的高强度铝合金及其制备方法
CN102560206A (zh) * 2012-02-27 2012-07-11 安徽省恒泰动力科技有限公司 一种稀土铝合金活塞材料及其制备方法
CN102560206B (zh) * 2012-02-27 2014-03-26 安徽省恒泰动力科技有限公司 一种稀土铝合金活塞材料及其制备方法
US9663845B2 (en) 2012-04-17 2017-05-30 Georg Fischer Druckguss Gmbh & Co. Kg Aluminum alloy
EP2653579A1 (fr) * 2012-04-17 2013-10-23 Georg Fischer Druckguss GmbH & Co. KG Alliage d'aluminium
WO2013156301A1 (fr) * 2012-04-17 2013-10-24 Georg Fischer Druckguss Gmbh & Co. Kg Alliage d'aluminium
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EP3342890A1 (fr) 2016-12-28 2018-07-04 Befesa Aluminio, S.L. Alliage de fonderie d'aluminium
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CN107083512A (zh) * 2017-03-30 2017-08-22 合肥金同维低温科技有限公司 一种用于制造冰箱压缩机气缸座的铝合金材料
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CN109706354A (zh) * 2019-03-08 2019-05-03 安徽信息工程学院 一种具有良好塑性的材料及其制备方法
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WO2021034224A1 (fr) * 2019-08-22 2021-02-25 Акционерное Общество "Объединенная Компания Русал Уральский Алюминий" Matériau à base d'aluminium en poudre
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CN113564398A (zh) * 2021-07-06 2021-10-29 北京科技大学 添加烧结活化剂的粉末冶金含锂铝基复合材料的制备方法
WO2023099520A1 (fr) 2021-12-03 2023-06-08 Audi Ag Alliage de coulée sous pression d'aluminium
DE102021131973A1 (de) 2021-12-03 2023-06-07 Audi Aktiengesellschaft Aluminium-Druckgusslegierung
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WO2023099080A1 (fr) 2021-12-03 2023-06-08 Audi Ag Alliage d'aluminium pour coulée sous pression
WO2023134190A1 (fr) * 2022-01-13 2023-07-20 上海交通大学 Alliage d'aluminium-silicium renforcé coulé sous pression à haute résistance et à haute ténacité non traité thermiquement et son procédé de préparation
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CN115522103B (zh) * 2022-10-31 2023-06-16 合肥工业大学 一种用于亚共晶铝硅合金的新型细化变质剂及其制备与应用方法

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