EP0924310B1 - Al-Legierung mit Silizium für Kolben in Kraftfahrzeugen - Google Patents

Al-Legierung mit Silizium für Kolben in Kraftfahrzeugen Download PDF

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Publication number
EP0924310B1
EP0924310B1 EP19980123801 EP98123801A EP0924310B1 EP 0924310 B1 EP0924310 B1 EP 0924310B1 EP 19980123801 EP19980123801 EP 19980123801 EP 98123801 A EP98123801 A EP 98123801A EP 0924310 B1 EP0924310 B1 EP 0924310B1
Authority
EP
European Patent Office
Prior art keywords
alloy
piston
aluminium
pistons
percent
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.)
Expired - Lifetime
Application number
EP19980123801
Other languages
English (en)
French (fr)
Other versions
EP0924310A1 (de
Inventor
Simon Thomas Gazzard
Jonathan David Philby
Simon Barnes
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.)
Federal Mogul Bradford Ltd
Original Assignee
Federal Mogul Bradford Ltd
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 Federal Mogul Bradford Ltd filed Critical Federal Mogul Bradford Ltd
Publication of EP0924310A1 publication Critical patent/EP0924310A1/de
Application granted granted Critical
Publication of EP0924310B1 publication Critical patent/EP0924310B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C22C21/04—Modified aluminium-silicon alloys
    • 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
    • F02F3/00—Pistons 
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0085—Materials for constructing engines or their parts
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/04—Forging of engine parts
    • 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
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • 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
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity

Definitions

  • the present invention relates to a aluminium-silicon alloy.
  • the alloy has use in the manufacture of pistons, in particular for pistons for use in internal combustion engines.
  • pistons are exposed to both static and dynamic stresses, while operating in bulk temperatures from sub-zero to up to 400°C. These stresses will also differ in different regions of the piston; for example a combustion bowl in a piston will be subject to different thermal and mechanical stresses than piston pin bosses.
  • the piston must also have low thermal expansion, and possess good bearing characteristics with marginal lubrication over the noted range of temperatures. Also, the piston material must lend itself to being formed into a piston, for example by casting with subsequent working.
  • Known casting alloys for piston manufacture include those disclosed in Japanese Patent Application JP1108339-A.
  • the alloys disclosed therein is an aluminium based alloy including silicon from 9 to 12 percent, copper from 0.5 to 2.5 percent, magnesium from 0.8 to 2.0 percent, cobalt from 0.5 to 3 percent, nickel from 1 to 3 percent, iron from 0.3 to 1.0 percent, manganese from 0.1 to 1.0 percent and titanium from 0.01 to 0.15 percent with the balance being aluminium and unavoidable impurities.
  • This alloy is said to provide high strength from 150 to 250 °C.
  • the alloy comprises from 8.0 to 10.9 percent silicon, from 0.8 to 2.0 percent magnesium, from 4.0 to 5.9 percent copper, from 1.0 to 3.0 percent nickel, from 0.2 to 0.4 percent manganese, less than 0.5 percent iron and at least one element from the group including antimony, zirconium, titanium, strontium, cobalt, chrome and vanadium whereby at least one element is present in an amount greater than 0.8 percent and the sum of the elements in this group is no more than 0.8 percent, with the balance of the alloy being aluminium and unavoidable impurities.
  • the present invention has as an advantage that it provides good strength over the range of temperatures in which a piston made from the alloy operates.
  • the alloy of the present invention is selected from a group of aluminium alloys with each alloy component element being present in weight percent as follows:
  • Zinc, Lead and Tin may also be present up to 0.15 weight percent. More preferably, the total amount of Lead and Tin may not exceed 0.15 weight percent.
  • the Copper allows age hardening of the alloy. An increase the amount of Copper beyond the limit stated reduces the high temperature fatigue strength of the alloy due to the generation of larger Copper-Nickel rich intermetallic crystals. An increase in the Copper level can also lead to shrinkage porosity problems in larger castings.
  • the Magnesium is present to contribute to the strength of the alloy. However, increasing the amount of Magnesium will lead to larger intermetallics in the as cast condition, but after aging these will be removed.
  • the Magnesium is added at a level where it provides good strengthening after aging through the formation of Mg 2 Si. Higher Magnesium levels lead to greater oxidation losses during the casting process, and thus a greater tendency for the cast metal to contain oxide defects.
  • the Nickel contributes to the high temperature strength of the alloy by the formation of thermally stable intermetallic crystals. However, exceeding the limits stated will reduce the high temperature fatigue strength of the alloy due to the precipitation of coarse intermetallic crystals. This tendancy is made worse by the low cooling rates associated with the casting of large pistons.
  • the Cobalt content is chosen to allow the formation of a large number of small intermetallics. This is believed to improve the mechanical properties of the alloy at 350°C.
  • the presence of the Cobalt in the Aluminium alloy at the levels stated is believed to reduce the diffusivity of the Copper in Aluminium, thereby slowing the overaging mechanism of the alloy. This has particular importance when considering the operation of a piston pin boss operating at around 200°C.
  • the presence of the Cobalt is believed also to lead to an increase in fatigue strength of the alloy at 350°C. This is of particular importance when considering the operation of a combustion bowl of a piston which is typically subject to such temperatures.
  • Titanium or Zirconium and/or Vanadium are each present as a grain refining addition.
  • the alloy may at the expense of aluminium optionally include at least one of the following
  • alloys of the present invention in addition to their use in the manufacture of forged pistons, may be used in the manufacture of gravity die cast pistons.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (7)

  1. Aluminiumlegierung, in welcher die Elementbestandteile in Gew.-% wie folgt vorliegen:
    10,5 bis 13,5 Silicium
    2,0 bis weniger als 4,0 Kupfer
    0,8 bis 1,5 Magnesium
    0,5 bis 2,0 Nickel
    0,3 bis 0,9 Kobalt
    wenigstens 20 ppm Phosphor
    und entweder
    (i) 0,05 bis 0,2 Titan; oder
    (ii) wenigstens eines der folgenden
    bis zu 0,2 Zirkon
    bis zu 0,2 Vanadium;
    in jedem Fall mit dem Rest Aluminium und unvermeidbaren Verunreinigungen.
  2. Legierung nach Anspruch 1, dadurch gekennzeichnet, daß Zink, Blei und Zinn ebenfalls in bis zu 0,15 Gew.-% als unvermeidbare Verunreinigungen vorhanden sein können.
  3. Legierung nach Anspruch 2, dadurch gekennzeichnet, daß die Gesamtmenge an Blei und Zinn 0,15 Gew.-% nicht übersteigt.
  4. Legierung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Legierung zu Lasten von Aluminium gegebenenfalls wenigstens eines der folgenden enthalten kann
    bis zu 0,5 Eisen
    bis zu 0,25 Mangan
    bis zu 0,05 Chrom und
    bis zu 15 ppm jeweils von Calcium, Natrium, Strontium und Lithium.
  5. Kolben, hergestellt aus einer Legierung nach einem vorhergehenden Anspruch.
  6. Kolben nach Anspruch 5, dadurch gekennzeichnet, daß der Kolben durch Schmieden hergestellt ist.
  7. Kolben nach Anspruch 5, dadurch gekennzeichnet, daß der Kolben durch Dauerformguß hergestellt ist.
EP19980123801 1997-12-20 1998-12-15 Al-Legierung mit Silizium für Kolben in Kraftfahrzeugen Expired - Lifetime EP0924310B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9726840A GB2332448B (en) 1997-12-20 1997-12-20 Aluminium alloy
GB9726840 1997-12-20

Publications (2)

Publication Number Publication Date
EP0924310A1 EP0924310A1 (de) 1999-06-23
EP0924310B1 true EP0924310B1 (de) 2001-09-12

Family

ID=10823883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980123801 Expired - Lifetime EP0924310B1 (de) 1997-12-20 1998-12-15 Al-Legierung mit Silizium für Kolben in Kraftfahrzeugen

Country Status (3)

Country Link
EP (1) EP0924310B1 (de)
DE (1) DE69802017T2 (de)
GB (1) GB2332448B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7682469B2 (en) 2002-07-22 2010-03-23 Kabushiki Kaisha Toyota Chuo Kenkyusho Piston made of aluminum cast alloy and method of manufacturing the same
DE102012220765A1 (de) 2012-11-14 2014-05-15 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Motorbauteils, Motorbauteil und Verwendung einer Aluminiumlegierung
DE102014209102A1 (de) 2014-05-14 2015-11-19 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Motorbauteils, Motorbauteil und Verwendung einer Aluminiumlegierung

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4648559B2 (ja) * 2001-03-28 2011-03-09 本田技研工業株式会社 耐熱アルミニウムダイカスト品
JP4312037B2 (ja) * 2003-12-02 2009-08-12 住友電工焼結合金株式会社 耐熱・高靭性アルミニウム合金およびその製造方法ならびにエンジン部品
DE102011083970A1 (de) * 2011-10-04 2013-04-04 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Motorbauteils und Motorbauteil
US9163579B2 (en) 2011-11-28 2015-10-20 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
US9169800B2 (en) 2011-11-28 2015-10-27 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
CN105190000B (zh) * 2013-03-05 2018-11-20 费德罗-莫格尔公司 带有抗积碳涂料的活塞及其制造方法
JP6103382B2 (ja) * 2013-10-31 2017-03-29 スズキ株式会社 アルミニウム合金
DE102018210007A1 (de) * 2018-06-20 2019-12-24 Federal-Mogul Nürnberg GmbH Aluminiumlegierung, Verfahren zur Herstellung eines Motorbauteils, Motorbauteil und Verwendung einer Aluminiumlegierung zur Herstellung eines Motorbauteils
CN108913961A (zh) * 2018-08-13 2018-11-30 文登皇利压铸化工材料有限公司 用于涡轮增压汽车使用的活塞铝锭
WO2020207829A1 (de) * 2019-04-09 2020-10-15 Ks Kolbenschmidt Gmbh Kolben für einen verbrennungsmotor
DE102020205193A1 (de) 2019-05-16 2020-11-19 Mahle International Gmbh Verfahren zur Herstellung eines Motorbauteils, Motorbauteil und die Verwendung einer Aluminiumlegierung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648918A (en) * 1984-03-02 1987-03-10 Kabushiki Kaisha Kobe Seiko Sho Abrasion resistant aluminum alloy
JPH01108339A (ja) * 1987-10-21 1989-04-25 Toyota Motor Corp ピストン用耐熱高強度アルミニウム合金
CA2064807A1 (en) * 1989-08-09 1991-02-10 Kevin Phillip Rogers Casting of modified al base-si-cu-ni-mg-mn-zr hypereutectic alloys
DE4404420C2 (de) * 1994-02-11 1997-07-17 Alcan Gmbh Aluminium-Silicium-Legierung und ihre Verwendung
JPH08176768A (ja) * 1994-12-22 1996-07-09 Nissan Motor Co Ltd 耐摩耗アルミニウム部材およびその製造方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7682469B2 (en) 2002-07-22 2010-03-23 Kabushiki Kaisha Toyota Chuo Kenkyusho Piston made of aluminum cast alloy and method of manufacturing the same
DE102012220765A1 (de) 2012-11-14 2014-05-15 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Motorbauteils, Motorbauteil und Verwendung einer Aluminiumlegierung
KR20150070449A (ko) * 2012-11-14 2015-06-24 페데랄-모굴 뉘른베르크 게엠바하 엔진 부품의 제조 방법, 엔진 부품 및 알루미늄 합금의 용도
DE102014209102A1 (de) 2014-05-14 2015-11-19 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Motorbauteils, Motorbauteil und Verwendung einer Aluminiumlegierung

Also Published As

Publication number Publication date
GB9726840D0 (en) 1998-02-18
EP0924310A1 (de) 1999-06-23
DE69802017D1 (de) 2001-11-15
GB2332448B (en) 2002-06-26
DE69802017T2 (de) 2002-03-21
GB2332448A (en) 1999-06-23

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