EP0362086A1 - Verfahren zur Herstellung von Werkstücken aus einer Aluminium-Legierung, welche bei einem längeren Verbleib auf höheren Temperaturen eine gute Ermüdungsbeständigkeit beibehält - Google Patents

Verfahren zur Herstellung von Werkstücken aus einer Aluminium-Legierung, welche bei einem längeren Verbleib auf höheren Temperaturen eine gute Ermüdungsbeständigkeit beibehält Download PDF

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Publication number
EP0362086A1
EP0362086A1 EP89420361A EP89420361A EP0362086A1 EP 0362086 A1 EP0362086 A1 EP 0362086A1 EP 89420361 A EP89420361 A EP 89420361A EP 89420361 A EP89420361 A EP 89420361A EP 0362086 A1 EP0362086 A1 EP 0362086A1
Authority
EP
European Patent Office
Prior art keywords
alloy
parts
zirconium
manganese
rapid solidification
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.)
Granted
Application number
EP89420361A
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English (en)
French (fr)
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EP0362086B1 (de
Inventor
Jean-François Faure
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.)
Pechiney Recherche GIE
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Pechiney Recherche GIE
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Application filed by Pechiney Recherche GIE filed Critical Pechiney Recherche GIE
Priority to AT89420361T priority Critical patent/ATE90397T1/de
Publication of EP0362086A1 publication Critical patent/EP0362086A1/de
Application granted granted Critical
Publication of EP0362086B1 publication Critical patent/EP0362086B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/043Changing 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

Definitions

  • the present invention relates to a process for manufacturing parts made of aluminum alloy retaining good resistance to fatigue after prolonged keeping hot.
  • EP 144898 teaches an aluminum alloy containing by weight 10 to 36% of silicon, 1 to 12% of copper, 0.1 to 3% of magnesium and 2 to 10% of at least one element chosen from the group Fe, Ni, Co, Cr and Mn.
  • This alloy is applicable to the manufacture of parts intended for both the aeronautical and automotive industries, said parts being obtained by the technique of powder metallurgy comprising, in addition to shaping by compacting and spinning, an intermediate processing step thermal between 250 and 550 ° C.
  • the present invention which consists of a process for manufacturing aluminum alloy parts retaining good resistance to fatigue after prolonged hot keeping which contain by weight 11 to 26% of silicon, 2 to 5% of iron , 0.5 to 5% copper, 0.1 to 2% magnesium and optionally minor additions of nickel and / or cobalt and which are characterized in that they also contain 0.1 to 0.4% of zirconium and 0.5 to 1.5% of manganese.
  • manganese has been substituted for part of the zirconium, which on the one hand allows savings on raw materials: manganese being cheaper than zirconium , on the other hand facilitates the conditions of melting of the alloy since a binary alloy containing 1% of zirconium has a liquidus temperature of 875 ° C whereas if it is 1% of manganese this temperature remains close 660 ° C.
  • the invention is also characterized in that the alloy is subjected in the molten state to a rapid solidification means before putting it in the form of parts.
  • the alloy is preferably melted at a temperature above 700 ° C so as to avoid any phenomenon of premature precipitation.
  • the parts after being possibly subjected to machining, are heat treated between 490 and 520 ° for 1 to 10 hours, then quenched in water before undergoing a tempering treatment between 170 and 210 ° C for 2 to 32 hours, which improves their mechanical characteristics.
  • the powder metallurgy (PM) range includes atomization in a nitrogen atmosphere of particles with a particle size less than 200 ⁇ m , then compacting at 300 MPa in an isostatic press, followed by spinning in the form of bars of diameter 40 mm
  • the spray deposition range (SD) uses the technique of GB 1379261 and makes it possible to obtain a deposit in the form of a cylindrical billet which is then transformed into a bar with a diameter of 40 mm by spinning.
  • the zirconium-manganese combination in limited quantities and the rapid solidification of the alloy obtained contribute to improving the resistance to fatigue, whether cold or hot, of parts liable to exhibit irregularities. surface like threads or connection curves and which find their application in the automobile industry, in particular in the confection of rods, axes of pistons and pistons.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Powder Metallurgy (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Forging (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Conductive Materials (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
EP89420361A 1988-09-26 1989-09-21 Verfahren zur Herstellung von Werkstücken aus einer Aluminium-Legierung, welche bei einem längeren Verbleib auf höheren Temperaturen eine gute Ermüdungsbeständigkeit beibehält Expired - Lifetime EP0362086B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420361T ATE90397T1 (de) 1988-09-26 1989-09-21 Verfahren zur herstellung von werkstuecken aus einer aluminium-legierung, welche bei einem laengeren verbleib auf hoeheren temperaturen eine gute ermuedungsbestaendigkeit beibehaelt.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812982A FR2636974B1 (fr) 1988-09-26 1988-09-26 Pieces en alliage d'aluminium gardant une bonne resistance a la fatigue apres un maintien prolonge a chaud et procede de fabrication desdites pieces
FR8812982 1988-09-26

Publications (2)

Publication Number Publication Date
EP0362086A1 true EP0362086A1 (de) 1990-04-04
EP0362086B1 EP0362086B1 (de) 1993-06-09

Family

ID=9370672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420361A Expired - Lifetime EP0362086B1 (de) 1988-09-26 1989-09-21 Verfahren zur Herstellung von Werkstücken aus einer Aluminium-Legierung, welche bei einem längeren Verbleib auf höheren Temperaturen eine gute Ermüdungsbeständigkeit beibehält

Country Status (16)

Country Link
US (2) US4963322A (de)
EP (1) EP0362086B1 (de)
JP (1) JPH0819496B2 (de)
KR (1) KR930003602B1 (de)
CN (1) CN1041399A (de)
AT (1) ATE90397T1 (de)
BR (1) BR8904844A (de)
DD (1) DD284904A5 (de)
DE (1) DE68906999T2 (de)
DK (1) DK468489A (de)
ES (1) ES2042048T3 (de)
FI (1) FI894499A (de)
FR (1) FR2636974B1 (de)
HU (1) HUT53680A (de)
IL (1) IL91738A0 (de)
YU (1) YU185389A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577062A1 (de) * 1992-06-29 1994-01-05 Sumitomo Electric Industries, Limited Ölpumpe aus Aluminiumlegierungen
EP1728882A2 (de) * 2004-03-23 2006-12-06 Nippon Light Metal, Co., Ltd. Aluminiumgusslegierung mit hoher steifigkeit und kleinem linearem ausdehnungskoeffizienten
WO2009068494A2 (de) * 2007-11-30 2009-06-04 Andreas Borst Kolben und verfahren zu dessen herstellung

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69221690T2 (de) * 1991-04-03 1998-04-02 Sumitomo Electric Industries Rotor für ölpumpe aus einer aluminiumlegierung und dessen herstellungsverfahren
US5372775A (en) * 1991-08-22 1994-12-13 Sumitomo Electric Industries, Ltd. Method of preparing particle composite alloy having an aluminum matrix
EP0657553A1 (de) * 1993-11-10 1995-06-14 Sumitomo Electric Industries, Ltd. Stickstoffhaltige Aluminium-Silizium pulvermetallurgische Legierung
DE19523484C2 (de) * 1995-06-28 2002-11-14 Daimler Chrysler Ag Verfahren zum Herstellen einer Zylinderlaufbüchse aus einer übereutektischen Aluminium/Silizium-Legierung zum Eingießen in ein Kurbelgehäuse einer Hubkolbenmaschine und danach hergestellte Zylinderlaufbüchse
US6332906B1 (en) 1998-03-24 2001-12-25 California Consolidated Technology, Inc. Aluminum-silicon alloy formed from a metal powder
US5965829A (en) * 1998-04-14 1999-10-12 Reynolds Metals Company Radiation absorbing refractory composition
DE10053664A1 (de) * 2000-10-28 2002-05-08 Leybold Vakuum Gmbh Mechanische kinetische Vakuumpumpe
US6902699B2 (en) * 2002-10-02 2005-06-07 The Boeing Company Method for preparing cryomilled aluminum alloys and components extruded and forged therefrom
US7435306B2 (en) * 2003-01-22 2008-10-14 The Boeing Company Method for preparing rivets from cryomilled aluminum alloys and rivets produced thereby
US7922841B2 (en) * 2005-03-03 2011-04-12 The Boeing Company Method for preparing high-temperature nanophase aluminum-alloy sheets and aluminum-alloy sheets prepared thereby
CN1317410C (zh) * 2005-03-09 2007-05-23 沈阳工业大学 一种耐磨、耐热高硅铝合金及其成型工艺
CN103031473B (zh) * 2009-03-03 2015-01-21 中国科学院苏州纳米技术与纳米仿生研究所 高韧性Al-Si系压铸铝合金的加工方法
CN107377973A (zh) * 2017-08-30 2017-11-24 广东美芝制冷设备有限公司 合金组件及其制备方法和应用
CN108265204A (zh) * 2018-01-24 2018-07-10 安徽浩丰实业有限公司 一种含钴的活塞材料及其制备方法
CN109826900B (zh) * 2019-02-13 2021-02-02 江苏汉苏机械股份有限公司 运行平稳的活塞杆组件

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB563994A (en) * 1941-12-01 1944-09-08 Nat Smelting Co Improvements in or relating to aluminium base alloys
EP0005910A1 (de) * 1978-05-31 1979-12-12 ASSOCIATED ENGINEERING ITALY S.p.A. Aus Kolben und Zylinder bestehende Systeme
US4419143A (en) * 1981-11-16 1983-12-06 Nippon Light Metal Company Limited Method for manufacture of aluminum alloy casting
EP0100287A1 (de) * 1982-07-06 1984-02-08 CNRS, Centre National de la Recherche Scientifique Amorphe oder mikrokristalline Legierungen auf Aluminiumbasis
EP0144898A2 (de) * 1983-12-02 1985-06-19 Sumitomo Electric Industries Limited Aluminiumlegierungen und Verfahren zu ihrer Herstellung
EP0170963A2 (de) * 1984-08-10 1986-02-12 AlliedSignal Inc. Durch rasche Erstarrung hergestellte Legierungen aus Aluminium-Übergangsmetall-Silicium
US4729790A (en) * 1987-03-30 1988-03-08 Allied Corporation Rapidly solidified aluminum based alloys containing silicon for elevated temperature applications

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2357450A (en) * 1941-01-18 1944-09-05 Nat Smelting Co Aluminum alloy
GB1431895A (en) * 1972-06-30 1976-04-14 Alcan Res & Dev Production of aluminium alloy products
AU536976B2 (en) * 1980-09-10 1984-05-31 Comalco Limited Aluminium-silicon alloys
US4347076A (en) * 1980-10-03 1982-08-31 Marko Materials, Inc. Aluminum-transition metal alloys made using rapidly solidified powers and method
US4647321A (en) * 1980-11-24 1987-03-03 United Technologies Corporation Dispersion strengthened aluminum alloys
JPS58204147A (ja) * 1982-05-14 1983-11-28 Nissan Motor Co Ltd 耐熱アルミニウム合金
US4435213A (en) * 1982-09-13 1984-03-06 Aluminum Company Of America Method for producing aluminum powder alloy products having improved strength properties
US4592781A (en) * 1983-01-24 1986-06-03 Gte Products Corporation Method for making ultrafine metal powder
JPS60131944A (ja) * 1983-12-19 1985-07-13 Sumitomo Electric Ind Ltd 超耐熱耐摩耗アルミニウム合金およびその製造用複合粉末
JPS6148551A (ja) * 1984-08-13 1986-03-10 Sumitomo Light Metal Ind Ltd 高温強度に優れたアルミニウム合金成形材
JPS61238947A (ja) * 1985-04-16 1986-10-24 Sumitomo Light Metal Ind Ltd Al−Si系合金素材の製造方法
US4732610A (en) * 1986-02-24 1988-03-22 Aluminum Company Of America Al-Zn-Mg-Cu powder metallurgy alloy
JPS6311642A (ja) * 1986-06-30 1988-01-19 Showa Alum Corp ヒ−トロ−ラ−用アルミニウム合金
US4847048A (en) * 1986-07-21 1989-07-11 Ryobi Limited Aluminum die-casting alloys
JPS6342344A (ja) * 1986-08-06 1988-02-23 Honda Motor Co Ltd 高温強度特性に優れた粉末冶金用Al合金
CH673242A5 (de) * 1986-08-12 1990-02-28 Bbc Brown Boveri & Cie
FR2624137B1 (fr) * 1987-12-07 1990-06-15 Cegedur Pieces en alliage d'aluminium, telles que bielles notamment, ayant une resistance a la fatigue amelioree et procede de fabrication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB563994A (en) * 1941-12-01 1944-09-08 Nat Smelting Co Improvements in or relating to aluminium base alloys
EP0005910A1 (de) * 1978-05-31 1979-12-12 ASSOCIATED ENGINEERING ITALY S.p.A. Aus Kolben und Zylinder bestehende Systeme
US4419143A (en) * 1981-11-16 1983-12-06 Nippon Light Metal Company Limited Method for manufacture of aluminum alloy casting
EP0100287A1 (de) * 1982-07-06 1984-02-08 CNRS, Centre National de la Recherche Scientifique Amorphe oder mikrokristalline Legierungen auf Aluminiumbasis
EP0144898A2 (de) * 1983-12-02 1985-06-19 Sumitomo Electric Industries Limited Aluminiumlegierungen und Verfahren zu ihrer Herstellung
EP0170963A2 (de) * 1984-08-10 1986-02-12 AlliedSignal Inc. Durch rasche Erstarrung hergestellte Legierungen aus Aluminium-Übergangsmetall-Silicium
US4729790A (en) * 1987-03-30 1988-03-08 Allied Corporation Rapidly solidified aluminum based alloys containing silicon for elevated temperature applications

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 258 (C-513)[3105], 20 juillet 1988; & JP-A-63 42 344 (HONDA MOTOR CO. LTD.) 23-02-1988 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577062A1 (de) * 1992-06-29 1994-01-05 Sumitomo Electric Industries, Limited Ölpumpe aus Aluminiumlegierungen
EP1728882A2 (de) * 2004-03-23 2006-12-06 Nippon Light Metal, Co., Ltd. Aluminiumgusslegierung mit hoher steifigkeit und kleinem linearem ausdehnungskoeffizienten
EP1728882A4 (de) * 2004-03-23 2007-10-31 Nippon Light Metal Co Aluminiumgusslegierung mit hoher steifigkeit und kleinem linearem ausdehnungskoeffizienten
WO2009068494A2 (de) * 2007-11-30 2009-06-04 Andreas Borst Kolben und verfahren zu dessen herstellung
WO2009068494A3 (de) * 2007-11-30 2009-08-20 Andreas Borst Kolben und verfahren zu dessen herstellung

Also Published As

Publication number Publication date
FI894499A0 (fi) 1989-09-22
IL91738A0 (en) 1990-06-10
FR2636974A1 (fr) 1990-03-30
DD284904A5 (de) 1990-11-28
HUT53680A (en) 1990-11-28
JPH0819496B2 (ja) 1996-02-28
FR2636974B1 (fr) 1992-07-24
US4992242A (en) 1991-02-12
FI894499A (fi) 1990-03-27
DE68906999T2 (de) 1993-09-16
US4963322A (en) 1990-10-16
DK468489D0 (da) 1989-09-22
DK468489A (da) 1990-03-27
ATE90397T1 (de) 1993-06-15
EP0362086B1 (de) 1993-06-09
KR900004951A (ko) 1990-04-13
YU185389A (sh) 1992-12-21
KR930003602B1 (ko) 1993-05-08
BR8904844A (pt) 1990-05-08
ES2042048T3 (es) 1993-12-01
DE68906999D1 (de) 1993-07-15
CN1041399A (zh) 1990-04-18
JPH02232324A (ja) 1990-09-14

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