EP0391815B1 - Alliage à base d'A1 à haut module et à resistance mécanique élevée et procédé d'obtention - Google Patents

Alliage à base d'A1 à haut module et à resistance mécanique élevée et procédé d'obtention Download PDF

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Publication number
EP0391815B1
EP0391815B1 EP90420166A EP90420166A EP0391815B1 EP 0391815 B1 EP0391815 B1 EP 0391815B1 EP 90420166 A EP90420166 A EP 90420166A EP 90420166 A EP90420166 A EP 90420166A EP 0391815 B1 EP0391815 B1 EP 0391815B1
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EP
European Patent Office
Prior art keywords
mpa
aluminium
annealing
hours
alloy
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Expired - Lifetime
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EP90420166A
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German (de)
English (en)
French (fr)
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EP0391815A1 (fr
Inventor
Jean-François Faure
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/937—Sprayed metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12486—Laterally noncoextensive components [e.g., embedded, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-base component
    • Y10T428/12799—Next to Fe-base component [e.g., galvanized]

Definitions

  • the invention relates to Al-based alloys of the 7000 series, according to the nomenclature of Aluminum Association (AA), having a high Young modulus and high mechanical characteristics of resistance and toughness as well as their method of obtaining.
  • AA Aluminum Association
  • the most resistant of the 7000 series aluminum alloys generally have a Young E modulus of the order of 70 GPa but not exceeding 72-73 GPa.
  • alloys based on Al containing Li Admittedly, alloys based on Al containing Li are known, the elastic modulus and mechanical characteristics of which are high. However, these pose complex production problems, given the reactivity of the Li and this therefore requires special and costly production and casting installations.
  • the alloys according to the invention can be produced using conventional installations known in the metallurgy of common Al alloys. In addition, the mechanical resistance characteristics of Al-Li are generally lower than those of 7000 alloys.
  • Alloys type 7000 much more loaded with alloying elements and obtained by powder metallurgy have high mechanical characteristics, good resistance to corrosion under tension but a modulus lower than 74 GPa.
  • Application EP-A-0375571 describes the obtaining of alloys of the 7000 series, by spray-deposition, but with a high Zn content (Zn> 8.5% by weight).
  • the invention therefore relates to the alloys with the following weight composition (in%), produced by spray-deposition: Zn: 5.5 - 8.45 Mg: 2.0 - 3.5 Cu: 0.5 - 2.5 Zr: 0.1 - 0.5 Cr: 0.3 - 0.8 Mn: 0.3 - 1.1 Fe: up to 0.5 Yes: up to 0.5 other elements each ⁇ 0.05 total ⁇ 0.15 Rest Al
  • a preferred composition is as follows: Zn: 7.0 - 8.4 Mg: 2.0 - 2.9 Cu: 0.8 - 2.0 Zr: 0.1 - 0.4 Cr: 0.3 - 0.6 Mn: 0.3 - 0.9 the rest being identical to the above compositions.
  • 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.
  • the hot transformation stage can be preceded by a homogenization treatment of the solid body, in one or more stages, between the temperatures of 450 and 520 ° C., generally between 2 and 50 hours.
  • the product thus obtained meets the characteristics referred to above. These properties are attributed to a fine dispersion of standard phases (Al, Mn, Cr) and Al3Zr - due to the combination of the composition of the alloy and to its production process; this structure makes it possible to achieve, among other things, good ductility, toughness and a high elastic limit.
  • the dissolution is generally carried out between 450 and 520 ° C and the T6 type treatment between 90 and 150 ° C, for a sufficient time to substantially obtain the hardness peak (from 2 to 25 hours).
  • the T7 treatment consists of a T6 type treatment supplemented by tempering at a higher temperature, for example between 150 and 170 ° C, for 0.5 to 20 hours.
  • the invention is also applicable to composite materials hardened by dispersed ceramic particles of the oxide, carbide, nitride, silicide, boride, etc. type introduced into the alloy according to the invention, which constitutes the matrix thereof, during operation 1 , for example by injecting the powder into the liquid stream. These particles have a size between 1 and 50 ⁇ m and represent (relative to the metal) a volume fraction of between 3 and 12%.
  • alloys 1 to 4 are in accordance with the invention, alloys 5 and 6 are outside the invention and alloy 7 is a conventional alloy (7075) from the prior art for comparison; this was poured semi-continuously and processed hot and heat treated like the other alloys; FIG. 1 represents the mechanical characteristics E and R 0.2 of the alloys tested, FIG. 2 the characteristics of toughness as a function of R 0.2 and FIG. 3 the characteristics of corrosion under tension as a function of R 0.2 .
  • Alloys 1 to 4 are in the claimed domain and have a module ⁇ 74 GPa and a long-term elastic limit ⁇ 530 MPa while having good long-term ductility ( ⁇ 8%) and long cross-beam ( ⁇ 6%), a toughness LT direction of at least 20 MPa ⁇ m and good resistance to corrosion under tension (measured according to standard ASTM G 38 73).
  • the alloy 5 is outside the invention due to its too high Cr and Mn content, and although having a high modulus and elastic limit, it is very little ductile and cannot be used for the manufacture of parts.
  • the alloy 6 is also outside the invention because of its too low Cr and Mn content, does not have the advantages of the alloys according to the invention, has a low modulus and elastic limit and therefore does not differ from the alloys classics like the 7075.
  • composition and properties of a conventional 7075 alloy conventionally cast and then transformed and heat treated according to the same range as alloys 1 to 6 are reported for comparison.
  • the alloys according to the invention are mainly intended for the manufacture of profiles or parts of forged or stamped structures.

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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)
  • Powder Metallurgy (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Laminated Bodies (AREA)
  • Conductive Materials (AREA)
  • Materials For Medical Uses (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Adornments (AREA)
  • Cookers (AREA)
  • Forging (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
EP90420166A 1989-04-05 1990-04-03 Alliage à base d'A1 à haut module et à resistance mécanique élevée et procédé d'obtention Expired - Lifetime EP0391815B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8904700A FR2645546B1 (fr) 1989-04-05 1989-04-05 Alliage a base d'al a haut module et a resistance mecanique elevee et procede d'obtention
FR8904700 1989-04-05

Publications (2)

Publication Number Publication Date
EP0391815A1 EP0391815A1 (fr) 1990-10-10
EP0391815B1 true EP0391815B1 (fr) 1995-01-25

Family

ID=9380553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90420166A Expired - Lifetime EP0391815B1 (fr) 1989-04-05 1990-04-03 Alliage à base d'A1 à haut module et à resistance mécanique élevée et procédé d'obtention

Country Status (12)

Country Link
US (2) US5047092A (no)
EP (1) EP0391815B1 (no)
JP (1) JPH032345A (no)
AT (1) ATE117734T1 (no)
BR (1) BR9001576A (no)
CA (1) CA2013270A1 (no)
DD (1) DD293144A5 (no)
DE (1) DE69016241T2 (no)
FR (1) FR2645546B1 (no)
HU (1) HUT57281A (no)
IL (1) IL93904A0 (no)
NO (1) NO901415L (no)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05332364A (ja) * 1992-06-01 1993-12-14 Daido Metal Co Ltd 耐摩耗性に優れたアルミニウム合金軸受およびその製造方法
FR2788317B1 (fr) * 1999-01-13 2002-02-15 Pechiney Rhenalu Ressort helicoidal en fil d'alliage d'aluminium
RU2165995C1 (ru) 1999-10-05 2001-04-27 Государственное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" Высокопрочный сплав на основе алюминия и изделие, выполненное из этого сплава
IL156386A0 (en) 2000-12-21 2004-01-04 Alcoa Inc Aluminum alloy products and artificial aging method
CA2519139C (en) * 2003-03-17 2010-01-05 Corus Aluminium Walzprodukte Gmbh Method for producing an integrated monolithic aluminium structure and aluminium product machined from that structure
DE112004000603B4 (de) * 2003-04-10 2022-11-17 Novelis Koblenz Gmbh AI-Zn-Mg-Cu-Legierung
US20050034794A1 (en) * 2003-04-10 2005-02-17 Rinze Benedictus High strength Al-Zn alloy and method for producing such an alloy product
US8083871B2 (en) 2005-10-28 2011-12-27 Automotive Casting Technology, Inc. High crashworthiness Al-Si-Mg alloy and methods for producing automotive casting
US8673209B2 (en) * 2007-05-14 2014-03-18 Alcoa Inc. Aluminum alloy products having improved property combinations and method for artificially aging same
US8840737B2 (en) * 2007-05-14 2014-09-23 Alcoa Inc. Aluminum alloy products having improved property combinations and method for artificially aging same
US8206517B1 (en) 2009-01-20 2012-06-26 Alcoa Inc. Aluminum alloys having improved ballistics and armor protection performance
CN103255327B (zh) * 2013-04-27 2015-06-17 北京工业大学 一种Al-Zn-Mg-Cu-Mn-Zr-Er合金及制备工艺
ES2814323T3 (es) * 2014-11-11 2021-03-26 Novelis Inc Aleaciones de aluminio tratables térmicamente multipropósito y procedimientos y usos relacionados
CA2982482C (en) 2015-05-11 2023-06-13 Arconic Inc. Improved thick wrought 7xxx aluminum alloys, and methods for making the same
DE102016001500A1 (de) * 2016-02-11 2017-08-17 Airbus Defence and Space GmbH Al-Mg-Zn-Legierung für den integralen Aufbau von ALM-Strukturen
US11674204B2 (en) * 2017-02-01 2023-06-13 Hrl Laboratories, Llc Aluminum alloy feedstocks for additive manufacturing
WO2020099174A1 (en) 2018-11-12 2020-05-22 Aleris Rolled Products Germany Gmbh 7xxx-series aluminium alloy product
CA3118997C (en) 2019-01-18 2023-08-08 Aleris Rolled Products Germany Gmbh 7xxx-series aluminium alloy product

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375571A1 (fr) * 1988-12-19 1990-06-27 PECHINEY RECHERCHE (Groupement d'Intérêt Economique régi par l'ordonnance du 23 Septembre 1967) Procédé d'obtention par "pulvérisation-dépôt" d'alliages d'Al de la série 7000 et de matériaux composites à renforts discontinus ayant pour matrice ces alliages à haute résistance mécanique et bonne ductilité

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US3563814A (en) * 1968-04-08 1971-02-16 Aluminum Co Of America Corrosion-resistant aluminum-copper-magnesium-zinc powder metallurgy alloys
US3791876A (en) * 1972-10-24 1974-02-12 Aluminum Co Of America Method of making high strength aluminum alloy forgings and product produced thereby
JPS57161045A (en) * 1981-03-31 1982-10-04 Sumitomo Light Metal Ind Ltd Fine-grain high-strength aluminum alloy material and its manufacture
FR2517702B1 (no) * 1981-12-03 1985-11-15 Gerzat Metallurg
JPS6058298B2 (ja) * 1982-04-06 1985-12-19 株式会社神戸製鋼所 均一な成形性を有するＡｌ−Ｚｎ−Ｍｇ−Ｃｕ系合金材の製造法
JPS6058299B2 (ja) * 1982-06-08 1985-12-19 株式会社神戸製鋼所 成形性の優れたＡｌ−Ｚｎ−Ｍｇ−Ｃｕ系合金材の製造法
GB2146352B (en) * 1982-09-03 1986-09-03 Alcan Int Ltd Aluminium alloys
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JPH0635624B2 (ja) * 1985-05-10 1994-05-11 昭和アルミニウム株式会社 高強度アルミニウム合金押出材の製造法
JPH0713275B2 (ja) * 1986-07-10 1995-02-15 アルミニウム粉末冶金技術研究組合 高強度耐応力腐食割れ性アルミニウム基粉末冶金合金
FR2601967B1 (fr) * 1986-07-24 1992-04-03 Cerzat Ste Metallurg Alliage a base d'al pour corps creux sous pression.
JPS6383251A (ja) * 1986-09-26 1988-04-13 Ichiro Kawakatsu 高力高弾性アルミニウム合金の製造法
DE3866969D1 (de) * 1987-06-23 1992-01-30 Alusuisse Lonza Services Ag Aluminiumlegierung fuer superplastische umformung.
JPS6447831A (en) * 1987-08-12 1989-02-22 Takeshi Masumoto High strength and heat resistant aluminum-based alloy and its production

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0375571A1 (fr) * 1988-12-19 1990-06-27 PECHINEY RECHERCHE (Groupement d'Intérêt Economique régi par l'ordonnance du 23 Septembre 1967) Procédé d'obtention par "pulvérisation-dépôt" d'alliages d'Al de la série 7000 et de matériaux composites à renforts discontinus ayant pour matrice ces alliages à haute résistance mécanique et bonne ductilité

Cited By (1)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR2645546B1 (fr) 1994-03-25
HU901848D0 (en) 1990-08-28
DD293144A5 (de) 1991-08-22
CA2013270A1 (fr) 1990-10-05
IL93904A0 (en) 1990-12-23
US5047092A (en) 1991-09-10
BR9001576A (pt) 1991-04-30
FR2645546A1 (fr) 1990-10-12
NO901415L (no) 1990-10-08
DE69016241D1 (de) 1995-03-09
EP0391815A1 (fr) 1990-10-10
JPH032345A (ja) 1991-01-08
HUT57281A (en) 1991-11-28
NO901415D0 (no) 1990-03-28
ATE117734T1 (de) 1995-02-15
DE69016241T2 (de) 1995-05-24
US5110372A (en) 1992-05-05

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