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EP1718778B1 - Materiau a base d'alliage d'aluminium, procede de production et utilisation correspondants - Google Patents

Materiau a base d'alliage d'aluminium, procede de production et utilisation correspondants Download PDF

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Publication number
EP1718778B1
EP1718778B1 EP05714972.6A EP05714972A EP1718778B1 EP 1718778 B1 EP1718778 B1 EP 1718778B1 EP 05714972 A EP05714972 A EP 05714972A EP 1718778 B1 EP1718778 B1 EP 1718778B1
Authority
EP
European Patent Office
Prior art keywords
mass
base alloy
magnesium
aluminium
silicon
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
EP05714972.6A
Other languages
German (de)
English (en)
Other versions
EP1718778A1 (fr
Inventor
Ulrich Bischofberger
Peter Krug
Gero Sinha
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.)
Mahle GmbH
Peak Werkstoff GmbH
Original Assignee
Mahle GmbH
Peak Werkstoff GmbH
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 Mahle GmbH, Peak Werkstoff GmbH filed Critical Mahle GmbH
Publication of EP1718778A1 publication Critical patent/EP1718778A1/fr
Application granted granted Critical
Publication of EP1718778B1 publication Critical patent/EP1718778B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
    • 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
    • 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
    • C22F1/047—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 magnesium 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
    • F02F3/00—Pistons 
    • F02F3/0084—Pistons  the pistons being constructed from specific materials

Definitions

  • the present invention relates to a method for producing an aluminum alloy-based material, a material obtainable by this method, and a use of this material.
  • pistons are usually made from aluminum-silicon casting alloys. Because of the good casting properties, pistons based on aluminum-silicon alloys can be produced relatively inexpensively and simply by means of the chill casting process.
  • These materials are typically with silicon contents between 12 and 18 wt .-%, in some cases up to 24 wt .-%, and with admixtures of magnesium between 1 to 1.5 wt .-%, copper between 1 and 3 wt. % and often nickel between 1 to 3 wt .-% alloyed.
  • z. B. according to the US Pat. No. 6,419,769 A1 It is recommended to adjust the copper content between 5.6 and 8.0% by weight.
  • FR 2 690 957 A1 The strength of such an alloy is additionally increased by the addition of the elements titanium, zirconium and vanadium. However, the alloying of these strength-increasing elements increases the density of the material.
  • a heat resistant alloy of reduced specific gravity is disclosed in the patent DE 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 .-%, wherein the silicon content should always be less than half of the magnesium content.
  • a magnesium content between 4 and 12 wt .-% and a silicon content between 0.5 and 5 wt .-%, wherein the silicon content should always be less than half of the magnesium content.
  • between 0.2 and 5 wt .-% copper and / or nickel alloyed.
  • This material is also to be distinguished by an improved heat resistance, even without the approval of strength-increasing components.
  • US-B1-6 419 769 describes a method for the production of cast materials from an aluminum base alloy, which contains, in addition to aluminum, among others, silicon, magnesium and copper.
  • the silicon-magnesium ratio is given as 10 to 25 and the ratio of copper to magnesium as 4 to 15. Based on the total weight of the aluminum alloy, the proportion of silicon is 11.0 to 14.0% by weight, of copper 5.6 to 8.0% by weight and of magnesium 0.5 to 1.5% by weight.
  • US-A-5 520 754 discloses an aluminum-lithium alloy containing inter alia copper and magnesium as well as their preparation.
  • the magnesium is thus added depending on the particular desired silicon content according to the above formula.
  • Part of the magnesium (1.73xSF content) reacts directly with silicon to form the magnesium silicide, the remaining 1.5 to 6.0% by weight of magnesium dissolve in the aluminum mixed crystal and, after suitable heat treatment, together with copper cause an increase in the strength of the material.
  • the material may contain the usual impurities in aluminum alloys.
  • the alloying of further alloying elements might seem sensible.
  • the strength-increasing effect of small addition amounts (0.05 to 0.2% of titanium, zirconium or vanadium ( FR 2 690 957 A1 ), also known is the effect of 0.1 to 0.5% silver which has a positive effect on the heat resistance properties of AlCu alloys.
  • the material obtainable by the process according to the invention is distinguished not only by its low density but also by excellent strength properties, which prove to be superior even at elevated temperatures compared to today's conventional piston alloys.
  • the base alloy can be treated with all known hot forming processes, for example extrusion, hot rolling or forging. Hot forming should be carried out with a degree of deformation greater than 5 times.
  • the aluminum or the base alloy used should contain foreign elements only in a small proportion, not more than 1% by mass per foreign element.
  • a heat treatment is advantageously carried out after the hot forming. This can be done in a conventional manner by solution annealing, quenching and aging.
  • the material according to the invention is suitable for the production of components of all kinds, in particular of pistons for internal combustion engines.
  • Beryllium is added to reduce the tendency of the melt to oxidize. Iron was analyzed as an impurity.
  • magnesium phosphate is the grain refining of the primary solidifying magnesium silicide. Iron was analyzed as an impurity.
  • magnesium phosphate is the grain refining of the primary solidifying magnesium silicide. Iron was analyzed as an impurity.
  • the finished material exhibits the following properties: Leg. A Leg. B Leg. C 2618 AlSi12Cu6MgTiZrV Density (g / cm 3 ) 2.50 2.60 2.46 2.77 2.75 Therm. Coefficient of expansion [1 / K] 23 ⁇ 10 -6 23.5 ⁇ 10 -6 22.5 ⁇ 10 -6 24 ⁇ 10 -6 ./. Modulus of elasticity [GPa] 79.3 78 82 72 ./. Tensile strength [N / mm 2 ] 390 390 390 420 270 Yield strength [N / mm 2 ] 335 335 335 350 235 Elongation at break [%] 2.4 1.5 1.1 7.0 ./. Fatigue strength [N / mm 2 ] room temperature 255 255 250 200 131 200 ° C 140 135 135 115 97 250 ° C 100 100 100 95 76
  • the material according to the invention is distinguished from the British aluminum standard 2618 by a lower density and an increased modulus of elasticity.
  • the achieved static strength properties reach down to the high-strength wrought alloy 2618.
  • the determined fatigue strength clearly exceeds the values achieved with the wrought alloy 2618.
  • the material according to the invention is superior in both static and dynamic testing. It is due to this combination of properties in a special way for the production of pistons for internal combustion engines.

Landscapes

  • 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)
  • Powder Metallurgy (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Extrusion Of Metal (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Forging (AREA)

Claims (13)

  1. Procédé de production d'un matériau, dans lequel on prépare un alliage à base d'aluminium constitué de 5,5 à 13,0% en masse de silicium,
    11,015 à 28,49% en masse de magnésium,
    1,0 à 4,0% en masse de cuivre,
    le reste étant de l'aluminium,
    on effectue ensuite au moins une fois un formage à chaud de l'alliage de base,
    puis on soumet ce dernier à un traitement thermique consistant en un recuit en solution, une trempe et un vieillissement accéléré,
    le rapport en masse magnésium : silicium étant
    teneur en magnésium = 1,73 * teneur en silicium + 1,5 à 6,0% en masse.
  2. Procédé selon la revendication 1, caractérisé en ce que l'alliage de base est produit par compactage par pulvérisation.
  3. Procédé selon la revendication 1, caractérisé en ce que l'alliage de base est préparé par le procédé de coulée continue.
  4. Procédé selon la revendication 1, caractérisé en ce que l'alliage de base est préparé par le procédé de coulée en coquille.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que l'alliage de base contient de 0,5 à 1,5% en poids de phosphate de magnésium pour affiner le grain du siliciure de magnésium primaire en formation.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'alliage de base est formé à chaud par extrusion, laminage à chaud ou forgeage.
  7. Procédé selon la revendication 3, caractérisé en ce que le formage à chaud est réalisé avec un degré de formage supérieur à 5 fois.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'on ajoute par alliage 1,5 à 3,0% en masse de cuivre.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'alliage à base d'aluminium peut contenir des impuretés habituelles, les impuretés contenues dans l'alliage à base d'aluminium ne dépassant pas 1% en masse d'éléments étrangers, par rapport à la masse de l'aluminium contenu dans l'alliage à base d'aluminium.
  10. Procédé selon la revendication 1, caractérisé en ce que le matériau est chauffé à coeur pendant 2 heures à 500°C, trempé dans de l'eau puis recuit pendant 10 heures à 210°C.
  11. Matériau à base d'un alliage d'aluminium, ledit matériau pouvant être obtenu par un procédé selon l'une des revendications 1 à 10.
  12. Utilisation du matériau selon la revendication 11 pour la fabrication de composants.
  13. Composant selon la revendication 12, à savoir piston pour moteurs à combustion interne.
EP05714972.6A 2004-02-16 2005-02-15 Materiau a base d'alliage d'aluminium, procede de production et utilisation correspondants Expired - Lifetime EP1718778B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004007704A DE102004007704A1 (de) 2004-02-16 2004-02-16 Werkstoff auf der Basis einer Aluminium-Legierung, Verfahren zu seiner Herstellung sowie Verwendung hierfür
PCT/DE2005/000254 WO2005078147A1 (fr) 2004-02-16 2005-02-15 Materiau a base d'alliage d'aluminium, procede de production et utilisation correspondants

Publications (2)

Publication Number Publication Date
EP1718778A1 EP1718778A1 (fr) 2006-11-08
EP1718778B1 true EP1718778B1 (fr) 2017-04-19

Family

ID=34801930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05714972.6A Expired - Lifetime EP1718778B1 (fr) 2004-02-16 2005-02-15 Materiau a base d'alliage d'aluminium, procede de production et utilisation correspondants

Country Status (8)

Country Link
US (1) US7892482B2 (fr)
EP (1) EP1718778B1 (fr)
JP (1) JP4914225B2 (fr)
KR (1) KR101220577B1 (fr)
CN (1) CN100503857C (fr)
BR (1) BRPI0507719B1 (fr)
DE (1) DE102004007704A1 (fr)
WO (1) WO2005078147A1 (fr)

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DE102007035115A1 (de) 2007-07-27 2009-01-29 FNE Forschungsinstitut für Nichteisen-Metalle GmbH Aluminiummatrix enthaltender Werkstoff mit Gradientenstruktur
DE102007035124A1 (de) 2007-07-27 2009-01-29 FNE Forschungsinstitut für Nichteisen-Metalle GmbH Verfahren zum Herstellen eines Werkstoffes mit einer Aluminiummatrix durch Squeeze Casting
DE102008056511B4 (de) * 2008-11-08 2011-01-20 Audi Ag Verfahren zur Herstellung dünnwandiger Metallbauteile aus einer AI-SiMg-Legierung, insbesondere von Bauteilen eines Kraftfahrzeugs
CN101985706A (zh) * 2010-11-18 2011-03-16 江苏万里活塞轴瓦有限公司 热精锻连杆用铝合金材料及其制备方法
KR101423447B1 (ko) * 2010-12-22 2014-07-24 쇼와 덴코 가부시키가이샤 브레이크 피스톤용 소형재의 제조 방법
CN102335704B (zh) * 2011-09-22 2013-08-28 哈尔滨哈飞工业有限责任公司 轮椅架结构件锻造成型方法
CN103394538A (zh) * 2013-08-06 2013-11-20 浙江瑞金铜铝型材有限公司 一种7a04超硬铝合金型材的成型及时效工艺
US20160201177A1 (en) * 2013-08-21 2016-07-14 Drexel University Selective Grain Boundary Engineering
CN104451286A (zh) * 2014-12-02 2015-03-25 绥阳县耐环铝业有限公司 一种镁铝合金及其加工工艺
CN104741873A (zh) * 2015-01-30 2015-07-01 深圳市江为五金螺丝有限公司 一种数控挤压工艺
CN104668300B (zh) * 2015-01-30 2018-04-27 深圳市江为五金螺丝有限公司 铝合金挤压件加工工艺
CN107923004B (zh) 2015-08-13 2021-12-14 美铝美国公司 改善的3xx铝铸造合金及其制备方法
CN105648290A (zh) * 2016-03-15 2016-06-08 昆明理工大学 一种高强度铝合金及其制备方法
KR20170124963A (ko) * 2016-05-03 2017-11-13 손희식 고내식 주물용 알루미늄 합금
US10851447B2 (en) 2016-12-02 2020-12-01 Honeywell International Inc. ECAE materials for high strength aluminum alloys
US11649535B2 (en) 2018-10-25 2023-05-16 Honeywell International Inc. ECAE processing for high strength and high hardness aluminum alloys
CN109431152A (zh) * 2018-12-07 2019-03-08 福建祥鑫股份有限公司 一种折叠式铝合金陪护床及其制造方法
CN109988952B (zh) * 2019-05-10 2020-05-05 贵州正合可来金科技有限责任公司 一种铝合金手机外壳的制备方法

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Also Published As

Publication number Publication date
EP1718778A1 (fr) 2006-11-08
BRPI0507719A (pt) 2007-07-03
CN1918311A (zh) 2007-02-21
CN100503857C (zh) 2009-06-24
US20070169861A1 (en) 2007-07-26
JP2007522348A (ja) 2007-08-09
KR101220577B1 (ko) 2013-01-10
KR20060127147A (ko) 2006-12-11
DE102004007704A1 (de) 2005-08-25
BRPI0507719B1 (pt) 2013-11-26
WO2005078147A1 (fr) 2005-08-25
US7892482B2 (en) 2011-02-22
JP4914225B2 (ja) 2012-04-11

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