EP0375571B1 - Verfahren zur Herstellung von Aluminiumlegierungen der Serie 7000 mittels Sprühabscheidung und nichtkontinuierlich verstärkten Verbundwerkstoffen, deren Matrix aus diesen Legierungen mit hoher mechanischer Festigkeit und guter Duktilität besteht - Google Patents

Verfahren zur Herstellung von Aluminiumlegierungen der Serie 7000 mittels Sprühabscheidung und nichtkontinuierlich verstärkten Verbundwerkstoffen, deren Matrix aus diesen Legierungen mit hoher mechanischer Festigkeit und guter Duktilität besteht Download PDF

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Publication number
EP0375571B1
EP0375571B1 EP89420497A EP89420497A EP0375571B1 EP 0375571 B1 EP0375571 B1 EP 0375571B1 EP 89420497 A EP89420497 A EP 89420497A EP 89420497 A EP89420497 A EP 89420497A EP 0375571 B1 EP0375571 B1 EP 0375571B1
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Prior art keywords
alloys
alloy
composition
series
following
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French (fr)
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EP0375571A1 (de
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Jean-François Faure
Bruno Dubost
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Pechiney Recherche GIE
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Pechiney Recherche GIE
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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
    • C22C21/10—Alloys based on aluminium with zinc as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0408—Light metal alloys
    • C22C1/0416—Aluminium-based 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
    • C22F1/04—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
    • C22F1/053—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 zinc as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment

Definitions

  • the invention relates to a method for obtaining an Al alloy of the 7000 series (Al-Zn-Mg-Cu) with high mechanical strength and good ductility by "spray-deposition" (spray deposition). More specifically, the method aims to obtain Al alloys which have in the treated state (T6) a breaking load ⁇ 800 MPa with an elongation, at least in the long direction, greater than or equal to 5%.
  • the invention also relates to obtaining composite materials with very high strength, high rigidity and good ductility having as matrix the 7000 alloys described above with a particulate reinforcement of ceramics and obtained directly by "spray-deposition".
  • spray-deposition is meant a process in which the metal is molten, atomized by a jet of gas at high pressure in the form of fine liquid droplets which are then directed and agglomerated on a substrate so as to form a massive and coherent deposit, containing a low closed porosity.
  • This deposit can be in the form of billets, tubes or plates whose geometry is controlled.
  • a technique of this type is known as “Spray Deposition” by the Anglo-Saxons and is also called “OSPREY process”.
  • the volume fraction of precipitates at the base of the structural hardening of the alloy (essentially of the type ⁇ -Mg Zn2 or ⁇ '- (Mg, Zn, Al, Cu)) becomes insufficient and it is no longer possible to obtain the levels of high mechanical characteristics (such as breaking load ⁇ 800 MPa) which are the objective of the present invention.
  • the volume fraction of the second phase is too high and leads to a brittle material, with very low elongations at break, which prohibits its industrial use.
  • the copper and magnesium contents must be in proportions close to the stoichiometry of the hardening precipitates.
  • Mg ⁇ 2% or Cu ⁇ 0.5% the nature and the volume fraction of the precipitates formed are insufficient to achieve the targeted mechanical characteristics.
  • Mg is ⁇ 4% or Cu ⁇ 2.0%, these elements are present in excess in the alloy and weaken it considerably.
  • the content of main elements preferably obeys the following relationship, 5.5 ⁇ Mg + Cu + Zn 6 ⁇ 6.5
  • the hot transformation of the solid alloy obtained by spray-deposition generally takes place between 300 and 450 ° C, preferably by spinning, forging or rolling, in one or more successive operations; these operations can optionally be combined, for example spinning + rolling or spinning + forging / stamping.
  • the hot transformation operations can be supplemented by cold operations such as rolling, drawing, etc.
  • the solution is carried out between 440 and 520 ° C, between 2 and 8 hours depending on the size of the products; quenching is followed by tempering between 2 and 25 h between 90 and 150 ° C in one or more stages, the longest times being generally associated with the lowest temperatures (and vice-versa).
  • the product obtained by a spray-deposition process can optionally be homogenized before hot transformation between 450 and 520 ° C for 2 to 50 hours in one or more stages.
  • the invention also consists, using the alloys and the method described above, in obtaining composite materials with very high resistance (Rm ⁇ 800 MPa), high Young modulus (E ⁇ 80 GPa), with acceptable ductility by users (A ⁇ 3%), as well as good resistance to wear and friction.
  • These materials are characterized by an alloy matrix of the 7xxx series of composition indicated above and a dispersion of ceramic particles of SiC, Al2O3 or B4C type (these examples not being limiting) and are obtained directly by the spray-deposition technique.
  • the alloys n ° 1 to 4 according to the invention have a very high level of mechanical characteristics, with in particular a breaking load ⁇ 800 MPa as well as a correct level of ductility, with elongations at break ⁇ 5% .
  • Alloy 5 outside the analytical limits of the invention (Zn content too low) has much weaker mechanical characteristics than the alloys of the invention.
  • Alloy 8 is an alloy whose composition falls within the analytical field of the alloys of the invention but which has been developed according to a powder metallurgy process described below: the alloy is melted and then atomized with nitrogen in the form powders; these are collected and sieved to 100 ⁇ m. Powders smaller than 100 ⁇ m are put in 140 mm diameter aluminum containers fitted with an orifice tube and are then degassed hot under secondary vacuum (by pumping through the tube) at a temperature of 460 ° C for 100 h. The powder containers thus degassed are sealed and then hot pressed in a blind die spinning press in a 143 mm diameter container at 450 ° C so as to reach the theoretical density of the material.
  • the billets thus obtained are then machined in order to remove the material from the container and then spun under the same conditions as the billets of the previous examples.
  • the product obtained is heat treated according to a similar procedure (see solution temperature in Table 1) and is characterized under the same conditions.
  • the results reported in Table 1 show that the product obtained has very low ductility and plastic deviation despite a relatively high level of resistance.
  • An alloy of composition Al Al: 10% Zn; 3.0% Mg; 1.0% Cu; 0.1% Zr; 0.15% Cr; 0.15% Mn, rest Al was melted at 750 ° C and produced by spray-deposition in the form of 150 mm diameter billets with simultaneous coinjection of SiC particles of average size 10 ⁇ m, with a volume fraction of 15%.
  • the billets thus obtained are then peeled to ⁇ 140 mm, homogenized for 8 hours at 470 ° C, hot-spun at 400 ° C in the form of flats of section 50 x 22 mm (spinning ratio 14.6).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Laminated Bodies (AREA)
  • Conductive Materials (AREA)
  • Forging (AREA)
  • Wrappers (AREA)

Claims (11)

  1. Verfahren zur Herstellung von Al-Legierungen der Serie 7000 mit hoher Festigkeit und guter Duktilität,
    dadurch gekennzeichnet,
    daß
    a) man durch Spritzabscheidung eine kompakte Legierung folgender Gewichtszusammensetzung bildet:
    Zn   von 8,5 bis 15,0 %
    Mg   von 2,0 bis 4,0 %
    Cu   von 0,5 bis 2,0 %
    wenigstens eines der drei folgenden Elemente:
    Zr   von 0,05 bis 0,8 %
    Mn   von 0,05 bis 1,0 %
    Cr   von 0,05 bis 0,8 %
       mit Zr + Mn + Cr ≦ 1,4 %
    Fe   bis zu 0,5 %
    Si   bis zu 0,5 %
    andere (Verunreinigungen)   ≦ 0,05 % jedes
    ≦ 0,15 % insgesamt
       Rest Al,
    b) man den so erhaltenen Körper zwischen 300 und 450°C warmverformt, danach eventuell kaltverformt und
    c) man das so erhaltene Erzeugnis durch Lösungsglühen, Abschrecken und Anlassen wärmebehandelt.
  2. Verfahren nach dem Anspruch 1,
    dadurch gekennzeichnet,
    daß die chemische Zusammensetzung die folgende ist:
    Zn   von 8,7 bis 13,7 %
    Mg   von 2,2 bis 3,8 %
    Cu   von 0,6 bis 1,6 %
    wenigstens eines der drei folgenden Elemente:
    Zr   von 0,05 bis 0,5 %
    Mn   von 0,05 bis 0,8 %
    Cr   von 0,05 bis 0,5 %
       mit Zr + Mn + Cr ≦ 1,2 %
    Fe   bis zu 0,3 %
    Si   bis zu 0,2 %
    andere (Verunreinigungen)   ≦ 0,05 % jedes
    ≦ 0,15 % insgesamt
       Rest Al.
  3. Verfahren nach den Ansprüchen 1 und 2,
    dadurch gekennzeichnet,
    daß die in Gewichtsprozentsätzen ausgedrückten Gehalte an Mg, Cu und Zn der Beziehung: 5,5 ≦ Mg + Cu + Zn 6 ≦ 6,5
    Figure imgb0008
     gehorchen.
  4. Verfahren nach den Ansprüchen 1, 2 oder 3,
    dadurch gekennzeichnet,
    daß Cr, Zr und Mn in der Zusammensetzung der Legierung mit: Cr ≧ 0,05 %, Mn ≧ 0,05 %, Zr ≧ 0,05 %
    Figure imgb0009
     und Mn + Cr + Zr ≦ 1,2 %
    Figure imgb0010
     gleichzeitig vorliegen.
  5. Verfahren nach dem Anspruch 4,
    dadurch gekennzeichnet,
    daß die Zusammensetzung der Legierung derart ist, daß: Mn + Cr ≦ 0,6 %.
    Figure imgb0011
  6. Verfahren nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet,
    daß eine Homogenisierung zwischen 450 und 520°C während 2 bis 50 h zwischen den Schritten a) und b) durchgeführt wird.
  7. Verfahren nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet,
    daß die Warmverformung durch Strangpressen, Walzen oder Schmieden oder eine Kombination dieser Arbeitsgänge vorgenommen wird.
  8. Verfahren nach dem Anspruch 7,
    dadurch gekennzeichnet,
    daß die Warmverformung durch eine Kaltverformung vervollständigt wird.
  9. Verfahren nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet,
    daß das Lösungsglühen zwischen 440 und 520°C während 2 bis 8 h durchgeführt wird.
  10. Verfahren nach einem der Ansprüche 1 bis 9,
    dadurch gekennzeichnet,
    daß das Anlassen zwischen 90 und 150°C während 2 bis 25 h durchgeführt wird.
  11. Verfahren zur Herstellung von Verbundmaterialien mit metallischer Matrix, bei dem man eine kompakte Legierung nach einem der Ansprüche 1 bis 10 erhält,
    dadurch gekennzeichnet,
    daß man während des Arbeitsganges der Spritzabscheidung keramische Teilchen etwa gleichachsiger Form einer Abmessung im Bereich von 1 bis 50 µm und eines Volumenanteils (relativ zum Metall) im Bereich von 3 bis 28 % miteinbläst.
EP89420497A 1988-12-19 1989-12-18 Verfahren zur Herstellung von Aluminiumlegierungen der Serie 7000 mittels Sprühabscheidung und nichtkontinuierlich verstärkten Verbundwerkstoffen, deren Matrix aus diesen Legierungen mit hoher mechanischer Festigkeit und guter Duktilität besteht Expired - Lifetime EP0375571B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420497T ATE90976T1 (de) 1988-12-19 1989-12-18 Verfahren zur herstellung von aluminiumlegierungen der serie 7000 mittels spruehabscheidung und nichtkontinuierlich verstaerkten verbundwerkstoffen, deren matrix aus diesen legierungen mit hoher mechanischer festigkeit und guter duktilitaet besteht.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8817044A FR2640644B1 (fr) 1988-12-19 1988-12-19 Procede d'obtention par " pulverisation-depot " d'alliages d'al de la serie 7000 et de materiaux composites a renforts discontinus ayant pour matrice ces alliages a haute resistance mecanique et bonne ductilite
FR8817044 1988-12-19

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EP0375571B1 true EP0375571B1 (de) 1993-06-23

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EP (1) EP0375571B1 (de)
JP (1) JPH02258935A (de)
AT (1) ATE90976T1 (de)
AU (1) AU615366B2 (de)
BR (1) BR8906543A (de)
CA (1) CA2005747C (de)
DD (1) DD290024A5 (de)
DE (1) DE68907331T2 (de)
FR (1) FR2640644B1 (de)
HU (1) HUT53681A (de)
IL (1) IL92727A0 (de)
NO (1) NO895100L (de)
TR (1) TR24392A (de)

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US10301710B2 (en) 2005-01-19 2019-05-28 Otto Fuchs Kg Aluminum alloy that is not sensitive to quenching, as well as method for the production of a semi-finished product

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CN104878262B (zh) * 2015-05-18 2017-01-18 广东省材料与加工研究所 一种高强度铝合金及其制备方法
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CN109055875A (zh) * 2018-10-27 2018-12-21 安徽创弘精密机械有限公司 一种提高铝合金型材强度的热处理工艺
CN110527882A (zh) * 2019-09-17 2019-12-03 苏州镁馨科技有限公司 一种高硬度铝合金材料
CN113088839A (zh) * 2020-01-08 2021-07-09 核工业理化工程研究院 喷射沉积超高强铝合金的致密化处理方法、应用及其致密化预成型坯
CN114107768B (zh) * 2020-08-26 2022-09-20 宝山钢铁股份有限公司 一种喷射铸轧7xxx铝合金薄带的制备方法
CN113005376B (zh) * 2021-02-10 2022-04-19 北京科技大学 一种超强高韧Al-Zn-Mg-Cu铝合金的固溶-时效热处理工艺
CN113481416B (zh) * 2021-07-08 2022-08-26 中南大学 一种高性能Al-Zn-Mg-Cu系合金
CN115961194A (zh) * 2022-04-25 2023-04-14 江苏大学 锶锆钛铒四元复合微合金化的790MPa超高强度高塑性耐晶间腐蚀铝合金及制备方法
CN116121606A (zh) * 2022-04-25 2023-05-16 江苏大学 锶锆钛钇镧五元复合微合金化800MPa强度级铝合金及其制备方法
CN115961193A (zh) * 2022-04-25 2023-04-14 江苏大学 锶锆钛铒镧五元复合微合金化的790MPa超高强度超耐晶间腐蚀铝合金及制备方法
CN115961158A (zh) * 2022-04-25 2023-04-14 江苏大学 锶锆钛钇铈五元复合微合金化的780MPa超高强度超耐晶间腐蚀铝合金及制备方法
CN116121607A (zh) * 2022-04-25 2023-05-16 江苏大学 锶锆钛镧四元复合微合金化的740-780MPa超高强高塑性耐腐蚀铝合金及制备方法

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Publication number Priority date Publication date Assignee Title
US10301710B2 (en) 2005-01-19 2019-05-28 Otto Fuchs Kg Aluminum alloy that is not sensitive to quenching, as well as method for the production of a semi-finished product

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BR8906543A (pt) 1990-09-04
IL92727A0 (en) 1990-09-17
NO895100L (no) 1990-06-20
NO895100D0 (no) 1989-12-18
CA2005747C (fr) 1996-04-09
DE68907331T2 (de) 1993-10-21
TR24392A (tr) 1991-09-01
US4995920A (en) 1991-02-26
AU615366B2 (en) 1991-09-26
DE68907331D1 (de) 1993-07-29
AU4681689A (en) 1990-06-21
FR2640644B1 (fr) 1991-02-01
ATE90976T1 (de) 1993-07-15
DD290024A5 (de) 1991-05-16
FR2640644A1 (fr) 1990-06-22
CA2005747A1 (fr) 1990-06-19
HUT53681A (en) 1990-11-28
EP0375571A1 (de) 1990-06-27
JPH02258935A (ja) 1990-10-19
HU896605D0 (en) 1990-02-28

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