EP2954081B1 - Alliage d'aluminium coulé - Google Patents

Alliage d'aluminium coulé Download PDF

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Publication number
EP2954081B1
EP2954081B1 EP14706468.7A EP14706468A EP2954081B1 EP 2954081 B1 EP2954081 B1 EP 2954081B1 EP 14706468 A EP14706468 A EP 14706468A EP 2954081 B1 EP2954081 B1 EP 2954081B1
Authority
EP
European Patent Office
Prior art keywords
aluminium casting
casting alloy
content
contained
alloy according
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.)
Not-in-force
Application number
EP14706468.7A
Other languages
German (de)
English (en)
Other versions
EP2954081A1 (fr
Inventor
Klaus Greven
Manikandan Loganathan
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.)
KSM Castings Group GmbH
Original Assignee
KSM Castings Group 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 KSM Castings Group GmbH filed Critical KSM Castings Group GmbH
Publication of EP2954081A1 publication Critical patent/EP2954081A1/fr
Application granted granted Critical
Publication of EP2954081B1 publication Critical patent/EP2954081B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • 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
    • 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
    • C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • 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
    • 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

Definitions

  • the invention relates to an aluminum casting alloy.
  • the present invention seeks to optimize such Si-poor AI casting alloy in terms of their mechanical properties such that saved when using them for the production of cast components, especially in the chassis of motor vehicles, material and with this material savings accompanying and known in the art advantages in the automotive sector can be achieved.
  • Such an Al casting alloy is stronger, tougher and more ductile than the prior art.
  • the alloys according to the invention may contain production-related impurities, e.g. Pb, Ni, etc., as well known to those skilled in the art.
  • Si is contained with a content of more than 3.1 to less than 3.7 wt .-%. It may be advantageous for certain applications if Si is included at a level of greater than 3.3 to less than 3.7 weight percent. For some other applications, it may be advantageous to include Si at a level of greater than 3.0 to less than 3.3 percent by weight.
  • Mg is contained at a content of 0.5 to 0.6 wt .-%. It may be advantageous if Mg is contained at a content of 0.5 to less than 0.6 wt .-%, preferably from 0.5 to 0.55 wt .-%.
  • Cr is contained at a content of 0.10 to less than 0.20 wt .-%.
  • Cr is contained at a level of 0.12 to 0.17 wt .-%.
  • Fe is contained at a content of 0.01 to 0.15 wt .-%.
  • Mn with a content of 0.01 to 0.05 wt .-%
  • Ti is contained at a content of 0.05 to 0.15 wt .-%.
  • Cu is contained at a content of 0.001 to 0.005 wt .-%.
  • Sr is contained with a content of 0.015 to 0.025 wt .-%.
  • Zr is contained at a content of 0.001 to 0.005 wt .-%.
  • Zn is contained at a content of 0.001 to 0.005 wt .-%.
  • impurities For many applications it may be advantageous to contain impurities with a content of ⁇ 0.05% by weight. For various applications, it may also be advantageous if impurities with a content of ⁇ 0.005 wt .-% are included.
  • the aluminum casting alloy according to the invention is a low-pressure Al casting alloy.
  • the invention also relates to a method for producing a cast component made of an Al casting alloy according to one of claims 1 to 14, in which the low-pressure casting method is used.
  • the Al casting alloy is a counter pressure (CPC) -AI cast alloy.
  • the invention also relates to a method for producing a cast component from an Al casting alloy according to one of claims 1 to 14, in which the low-pressure counter-pressure casting method is used.
  • a manufacturing method for cast components especially as Fahniverksmaschine, preferably as Radder parts, preferably as Dämpferstelzen, wheel or pivot bearing, of motor vehicles from the casting alloy according to the invention can advantageously squeeze casting, gravity die casting or die casting, in particular the Thixo-, Rheo - or low-pressure sand casting, find application.
  • the cast components are subjected to a two-stage heat treatment, namely solution heat treatment and subsequent heat aging. It may be advantageous if the cast component is quenched in water between the two heat treatment stages.
  • the cast component after the casting process between 530 ° C and 550 ° C for 6 to 10h, preferably between 540 ° C and 550 ° C for 7 to 9 h, especially for 8 to 9h, most preferably between more than 540 ° C and 550 ° C for 7 to 9 h, in particular for 8 to 9h, solution-annealed.
  • the cast component after the casting process between 180 ° C and 210 ° C for 1 to 8h, especially for 1 to 6.5 h, preferably between 180 ° C. and 190 ° C. for 1 to 6.5 hours, in particular for 4 to 6.5 hours, more preferably between 180 ° C. and less than 190 ° C. for 4 to 6.5 hours, in particular for 5 to 6.5 hours, is started.
  • the invention further provides for the use of an Al casting alloy according to one of the claims or a heat-treated cast component according to one of claims for motor vehicle parts, preferably for wheel-guiding components of motor vehicles, very particularly preferably for damper stilts, wheel carriers or pivot bearings of motor vehicles.
  • the cast components have an improved strength-elongation ratio with improved structural properties.
  • the casting process enables one of a large defect, known as voids, free casting, on the other hand, the microstructure is positively influenced in such a way that the number of internal notches, which reduce the elongation at break, is minimized.
  • the aluminum casting alloy according to the invention has proven particularly suitable for components subject to heavy loads, such as shock absorber stilts, wheel carriers or pivot bearings.
  • the counter-pressure die casting method (CPC method) is used.
  • Cast components according to the invention which are produced from an Al casting alloy according to one of the claims and / or by a process according to one of the claims, are characterized by a heat treatment by a yield strength R P 0.2 of 300 to 325 MPa, preferably of 305 to 310 MPa, and / or an elongation at break A5 of 4 to 10%, preferably of 7 to 9%, and / or a tensile strength R m of 350-375 MPa, preferably 350-360 MPa.
  • a so-called "French tensile bar” according to DIN 50125 is separated out of a swivel bearing produced by a counter-pressure die casting process (CPC process), the swivel bearing undergoing a heat treatment in advance (solution annealing 540 ° C for 8 h, quenching in water, hot aging 180 ° C for 6,5 h).
  • CPC process counter-pressure die casting process
  • the casting of comparative samples (AlSi3Mg0.5 and AlSi3Mg0.5Cr0.3) and the subsequent heat treatment takes place under the same conditions.
  • the alloys to be compared differ only in the chromium content.
  • the sample rod is removed at the same point of the pivot bearing.
  • chassis part preferably the damper stilts or the wheel carrier
  • CPC counter-pressure chill casting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Body Structure For Vehicles (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Cookers (AREA)
  • Vehicle Body Suspensions (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Claims (25)

  1. Alliage d'aluminium de fonderie contenant les éléments d'alliage suivants :
    Si : entre 3,0 et 3,8 % en poids
    Mg : entre 0,3 et 0,6 % en poids
    Cr : entre 0,05 et < 0,25 % en poids
    Fe : < 0,18 % en poids
    Mn : < 0,06 % en poids
    Ti : < 0,16 % en poids
    Cu : < 0,006 % en poids
    Sr : entre 0,010 et 0,030
    Zr < 0,006 % en poids
    Zn < 0,006 % en poids
    Impuretés : < 0,1 % en poids
    et complété à 100 % en poids avec de l'aluminium.
  2. Alliage d'aluminium de fonderie selon la revendication 1, caractérisé en ce que la teneur en Si est supérieure à 3,1 et inférieure à 3,7 % en poids.
  3. Alliage d'aluminium de fonderie selon la revendication 1 ou 2, caractérisé en ce que la teneur en Mg est comprise entre 0,5 et 0,6 % en poids.
  4. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 3, caractérisé en ce que la teneur en Cr est supérieure à 0,10 et inférieure à 0,20 % en poids.
  5. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 4, caractérisé en ce que la teneur en Cr est comprise entre 0,12 et 0,17 % en poids.
  6. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 5, caractérisé en ce que la teneur en Fe est comprise entre 0,01 et 0, 15 % en poids.
  7. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 6, caractérisé en ce que la teneur en Mn est comprise entre 0,01 et 0,05 % en poids.
  8. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 7, caractérisé en ce que la teneur en Ti est comprise entre 0,05 et 0,15 % en poids.
  9. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 8, caractérisé en ce que la teneur en Cu est comprise entre 0,001 et 0,005 % en poids.
  10. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 9, caractérisé en ce que la teneur en Sr est comprise entre 0,015 et 0,025 % en poids.
  11. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 10, caractérisé en ce que la teneur en Zr est comprise entre 0,001 et 0,005 % en poids.
  12. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 11, caractérisé en ce que la teneur en Zn est comprise entre 0,001 et 0,005 % en poids.
  13. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 12, caractérisé en ce que la teneur en impuretés est < 0,05 % en poids.
  14. Alliage d'aluminium de fonderie selon l'une des revendications 1 à 13, caractérisé en ce que la teneur en impuretés est < 0,005 % en poids.
  15. Alliages d'aluminium de fonderie selon l'une des revendications 1 à 14, caractérisé en ce que l'alliage d'aluminium de fonderie est un alliage d'aluminium de fonderie à basse pression.
  16. Alliages d'aluminium de fonderie selon l'une des revendications 1 à 14, caractérisé en ce que l'alliage d'aluminium de fonderie est un alliage d'aluminium de fonderie à contre-pression (CPC).
  17. Procédé de fabrication d'une pièce moulée en alliage d'aluminium de fonderie selon l'une des revendications 1 à 14 utilisant le procédé de coulée à basse pression.
  18. Procédé de fabrication d'une pièce moulée en alliage d'aluminium de fonderie selon l'une des revendications 1 à 14 utilisant le procédé de coulée à contre-pression (CPC).
  19. Procédé de fabrication d'une pièce moulée en alliage d'aluminium de fonderie selon l'une des revendications 1 à 14 utilisant le moulage sous pression, le coulage en coquille ou le coulage sous pression, en particulier le coulage thixotropique, rhéologique ou en sable à basse pression.
  20. Procédé de fabrication, en particulier selon l'une des revendications 17 à 19, d'une pièce moulée en alliage d'aluminium de fonderie selon l'une des revendications 1 à 16, au cours duquel la pièce moulée est soumise après le coulage à un traitement thermique en deux phases, soit un recuit de mise en solution suivi d'un vieillissement à chaud.
  21. Procédé selon la revendication 20, caractérisé en ce que la pièce moulée est plongée brusquement dans l'eau pour y être refroidie entre les deux phases de traitement thermique.
  22. Procédé selon l'une des revendications 17 à 21 au cours duquel la pièce moulée subit, après le coulage, un recuit de mise en solution entre 530 °C et 550 °C pendant 6 à 10 h, de préférence entre 540 °C et 550 °C pendant 7 à 9 h, en particulier pendant 8 à 9 h, de préférence encore à une température supérieure à 540 °C mais n'excédant pas 550 °C pendant 7 à 9 h, spécialement entre 8 et 9 h.
  23. Procédé selon l'une des revendications 17 à 22 au cours duquel on fait revenir la pièce moulée après le coulage pendant 1 à 8 h à une température comprise entre 180 °C et 210 °C, en particulier pendant 1 à 6,5 h, de préférence entre 180 °C et 190 °C pendant 1 à 6,5 h, en particulier pendant 4 à 6,5 h, de préférence encore entre 180 °C et moins de 190 °C pendant 4 à 6,5 h, spécialement entre 5 et 6,5 h.
  24. Utilisation d'un alliage d'aluminium de fonderie selon l'une des revendications précédentes ou d'une pièce moulée en alliage d'aluminium de fonderie pour train roulant de véhicules automobiles, fabriqués de la même manière, en particulier soumis à un traitement thermique, de préférence pour les éléments directionnels des véhicules, de préférence encore pour les supports d'amortisseur, les supports de roue et en particulier les paliers de pivot des véhicules automobiles.
  25. Pièce moulée fabriquée en alliage d'aluminium de fonderie selon l'une des revendications précédentes ou selon un procédé selon l'une des revendications précédentes, la pièce moulée présentant, après un traitement thermique une dilatation limite RP0,2 de 300 à 325 MPa, de préférence de 305 à 310 MPa, et/ou un allongement à la rupture A5 de 4 à 10 %, de préférence de 7 à 9 %, et/ou une résistance à la traction Rm de 350 à 375 MPa, de préférence de 350 à 360 MPa.
EP14706468.7A 2013-02-06 2014-02-04 Alliage d'aluminium coulé Not-in-force EP2954081B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013101179 2013-02-06
PCT/DE2014/100032 WO2014121785A1 (fr) 2013-02-06 2014-02-04 Alliage d'al de fonderie

Publications (2)

Publication Number Publication Date
EP2954081A1 EP2954081A1 (fr) 2015-12-16
EP2954081B1 true EP2954081B1 (fr) 2016-10-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14706468.7A Not-in-force EP2954081B1 (fr) 2013-02-06 2014-02-04 Alliage d'aluminium coulé

Country Status (8)

Country Link
US (1) US9982329B2 (fr)
EP (1) EP2954081B1 (fr)
JP (1) JP6448550B2 (fr)
CN (1) CN104968817A (fr)
BR (1) BR112015016608A2 (fr)
DE (2) DE102014101317A1 (fr)
MX (1) MX359907B (fr)
WO (1) WO2014121785A1 (fr)

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DE102018128040A1 (de) 2017-11-17 2019-05-23 Ksm Castings Group Gmbh Al-Gusslegierung
CN110578077A (zh) * 2018-06-07 2019-12-17 上海汇众汽车制造有限公司 铸造铝合金
CN110257672A (zh) * 2019-06-03 2019-09-20 江苏创斯达科技有限公司 一种轻质高强无级变速器壳体及其制备方法
CN110592439B (zh) * 2019-08-27 2021-04-20 江苏大学 一种高塑性Al-Si-Cu系铸造铝合金及其制备方法
CN111004948B (zh) * 2019-11-29 2021-05-14 佛山市三水凤铝铝业有限公司 一种铝合金局部真空铸造的方法
CN111549263B (zh) * 2020-06-05 2021-11-23 东风汽车有限公司 一种铝合金集成式电驱动总成安装框架及其低压铸造方法
CN112281030B (zh) * 2020-10-23 2022-02-15 江阴中奕达轻合金科技有限公司 新能源汽车横梁挤压铝型材及其加工工艺
CN112981196B (zh) * 2021-02-10 2022-04-22 北京科技大学 一种超高强度、高韧性Al-Zn-Mg-Cu铝合金及其制备方法
EP4101941A1 (fr) 2021-06-07 2022-12-14 Dubai Aluminium PJSC Alliage de moulage aluminium-silicium et pièces moulées fabriquées à partir dudit alliage

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EP2954081A1 (fr) 2015-12-16
MX359907B (es) 2018-10-16
BR112015016608A2 (pt) 2017-07-11
WO2014121785A1 (fr) 2014-08-14
WO2014121785A9 (fr) 2015-12-23
US9982329B2 (en) 2018-05-29
CN104968817A (zh) 2015-10-07
DE102014101317A1 (de) 2014-08-07
JP6448550B2 (ja) 2019-01-09
MX2015009888A (es) 2015-10-14
US20150307969A1 (en) 2015-10-29
JP2016513172A (ja) 2016-05-12
DE112014000689A5 (de) 2015-10-15

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