EP2172572B1 - Pièce de matériau de structure en alliage d'al contenant mg et à forte teneur en si et procédé de fabrication de celle-ci - Google Patents

Pièce de matériau de structure en alliage d'al contenant mg et à forte teneur en si et procédé de fabrication de celle-ci Download PDF

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Publication number
EP2172572B1
EP2172572B1 EP08772999.2A EP08772999A EP2172572B1 EP 2172572 B1 EP2172572 B1 EP 2172572B1 EP 08772999 A EP08772999 A EP 08772999A EP 2172572 B1 EP2172572 B1 EP 2172572B1
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EP
European Patent Office
Prior art keywords
thermal
casting
aging
plastic processing
ingot
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
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EP08772999.2A
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German (de)
English (en)
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EP2172572A1 (fr
EP2172572A4 (fr
Inventor
Liang Zuo
Fuxiao Yu
Gang Zhao
Xiang Zhao
Yongliang Yang
Yan Li
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Northeastern University China
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Northeastern University China
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Publication of EP2172572A4 publication Critical patent/EP2172572A4/fr
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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
    • 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

Definitions

  • Mg-containing high-silicon aluminum alloys with relatively high plasticity and strength, including profiles, bars, sheets, and forgings, for use as advanced new structural materials.
  • the present invention presents the aluminum alloys containing Mg and high Si, which comprises profiles, bars sheets, and forgings, wherein the aluminum alloys are made by a process as defined in the claims, comprising the steps of:
  • the Mg-contained high-silicon aluminum alloys may contain at least one of Cu, Zn, Ni, Ti, and Fe elements, wherein a total weight percentage of the Cu, Zn, Ni, Ti, and Fe is less than 2wt%.
  • the heat treatment is applied to the product at a predetermined temperature.
  • a plurality of parameters of the hot extrusion, hot rolling, and hot forging processes are shown in Figs. 20, 21 , and 22 respectively.
  • a plurality of mechanical properties of the alloys after the heat treatments is shown in Fig. 23 .

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  • 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)
  • Forging (AREA)
  • Continuous Casting (AREA)
  • Extrusion Of Metal (AREA)

Claims (7)

  1. Procédé de fabrication d'un produit d'alliage d'aluminium contenant de 0,2 à 2,0 pour cent en poids (% pds) de Mg, 8 à 18 % pds de Si et présentant une microstructure de finesse homogène, une matrice aluminium équiaxe avec une granularité moyenne < 6 µm, et des particules de silicium et de phase secondaire dispersées avec une granulométrie moyenne < 5 µm, tel qu'un matériau profilé, une barre, une feuille ou une pièce forgée, comprenant les étapes suivantes :
    (a) moulage d'un lingot de l'alliage d'aluminium par procédé de moulage direct en coquille, ledit moulage direct en coquille étant exécuté avec une température relative de coulée comprise entre 150 et 300°C au-dessus de la ligne du liquidus de l'alliage d'aluminium, une vitesse de coulée comprise entre 100 et 200 mm/min, et un débit d'eau de refroidissement compris entre 5 et 15 g/mm·s à la périphérie du lingot, aucun élément modificateur n'étant ajouté à la coulée de moulage direct en coquille ;
    (b) traitement par préchauffage du lingot pour disperser les particules de phase Si eutectique avec une vitesse de chauffage comprise entre 10 et 30°C/min, une température de chauffage comprise entre 450 et 520°C, et un temps de maintien compris entre 1 et 3 heures ; et
    (c) traitement thermoplastique, suivi d'un refroidissement, lui-même suivi d'un traitement thermique afin d'obtenir le produit d'alliage d'aluminium avec une forme définitive et une microstructure modifiée, les mécanismes de renforcement de l'alliage d'aluminium étant un renforcement par affinage de grain de la matrice aluminium, renforcement par dispersion des particules de silicium, et renforcement par précipitation des particules de phase secondaire, l'alliage d'aluminium étant refroidi naturellement ou subissant un refroidissement forcé, et étant soumis à un traitement thermique consécutif au traitement thermoplastique.
  2. Procédé selon la revendication 1, où l'alliage du matériau de structure contient au moins un des éléments suivants : Cu, Zn, Ni, Ti, et Fe, un pourcentage en poids total de Cu, Zn, Ni, Ti, et Fe étant inférieur ou égal à 2 % pds.
  3. Procédé selon la revendication 1 ou la revendication 2, où l'étape (c) consiste en un refroidissement naturel consécutif au traitement thermoplastique, suivi par une étape de traitement de mise en solution et une étape de traitement par vieillissement artificiel, le traitement de mise en solution étant exécuté avec une vitesse de chauffage comprise entre 10 et 30°C/min, une température de traitement de mise en solution comprise entre 500 et 540°C, et un temps de traitement de mise en solution compris entre 0,5 et 3 heures, suivie d'une trempe, et le traitement par vieillissement artificiel étant exécuté avec une température de vieillissement comprise entre 160 et 200°C, et un temps de vieillissement compris entre 1 et 10 heures.
  4. Procédé selon la revendication 1 ou la revendication 2, où l'étape (c) consiste en un refroidissement forcé consécutif au traitement thermoplastique, suivi par une étape de traitement par vieillissement artificiel ou naturel et où, si le vieillissement est un vieillissement artificiel, celui-ci exécuté avec une température de vieillissement comprise entre 160 et 200°C, et un temps de vieillissement compris entre 1 et 10 heures.
  5. Procédé selon la revendication 1 ou la revendication 2, où l'étape (c) comprend en outre une étape de laminage à chaud lors du traitement thermoplastique, la valeur de réduction totale du laminage à chaud étant supérieure à 40 %.
  6. Procédé selon la revendication 1 ou la revendication 2, où l'étape (c) comprend en outre une étape d'extrusion à chaud lors du traitement thermoplastique, le taux d'extrusion de l'extrusion à chaud étant supérieur à 15.
  7. Procédé selon la revendication 1 ou la revendication 2, où l'étape (c) comprend en outre une étape de forgeage à chaud lors du traitement thermoplastique, le taux de forgeage à chaud étant supérieur à 40 %.
EP08772999.2A 2007-06-29 2008-06-30 Pièce de matériau de structure en alliage d'al contenant mg et à forte teneur en si et procédé de fabrication de celle-ci Not-in-force EP2172572B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710011919 2007-06-29
PCT/CN2008/001246 WO2009003365A1 (fr) 2007-06-29 2008-06-30 Pièce de matériau de structure en alliage d'al contenant mg et à forte teneur en si et procédé de fabrication de celle-ci

Publications (3)

Publication Number Publication Date
EP2172572A1 EP2172572A1 (fr) 2010-04-07
EP2172572A4 EP2172572A4 (fr) 2010-12-15
EP2172572B1 true EP2172572B1 (fr) 2013-05-15

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EP08772999.2A Not-in-force EP2172572B1 (fr) 2007-06-29 2008-06-30 Pièce de matériau de structure en alliage d'al contenant mg et à forte teneur en si et procédé de fabrication de celle-ci

Country Status (8)

Country Link
US (1) US20100126639A1 (fr)
EP (1) EP2172572B1 (fr)
JP (1) JP2010531388A (fr)
KR (1) KR20100018048A (fr)
CN (1) CN101333614B (fr)
CA (1) CA2689332A1 (fr)
RU (1) RU2463371C2 (fr)
WO (1) WO2009003365A1 (fr)

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CN104651763A (zh) * 2014-05-15 2015-05-27 巩向鹏 一种6063铝合金的性能优化方法
CN104087880B (zh) * 2014-07-08 2016-05-04 江苏佳铝实业股份有限公司 一种高阻尼铝硅合金板材的生产工艺
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CN106399765B (zh) * 2016-10-11 2019-02-26 湖南理工学院 Al-Si-Mg铝合金及其制备工艺
EP3728665A1 (fr) * 2017-12-21 2020-10-28 Novelis, Inc. Produits d'alliage d'aluminium présentant une durabilité de liaison améliorée et/ou ayant des surfaces contenant du phosphore et leurs procédés de fabrication
US11498839B2 (en) * 2019-06-01 2022-11-15 GM Global Technology Operations LLC Systems and methods for producing high-purity fine powders
CN112941433A (zh) * 2019-12-11 2021-06-11 中国科学院金属研究所 一种改善6082铝合金停放效应的时效工艺
CN113881907A (zh) * 2021-08-26 2022-01-04 山东创新金属科技有限公司 一种挤压铸造铝合金的时效处理工艺
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CN118241086B (zh) * 2024-05-28 2024-07-23 中铝材料应用研究院有限公司 铝合金活塞及其制备方法

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Also Published As

Publication number Publication date
CN101333614B (zh) 2010-09-01
US20100126639A1 (en) 2010-05-27
RU2009149092A (ru) 2011-08-10
KR20100018048A (ko) 2010-02-16
CN101333614A (zh) 2008-12-31
RU2463371C2 (ru) 2012-10-10
WO2009003365A1 (fr) 2009-01-08
EP2172572A1 (fr) 2010-04-07
EP2172572A4 (fr) 2010-12-15
JP2010531388A (ja) 2010-09-24
CA2689332A1 (fr) 2009-01-08

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