DE3670510D1 - METHOD FOR DESENSITIZING AGAINST DEPARTMENT CORROSION IN LITHIUM-CONTAINING ALUMINUM ALLOYS, WHICH AT THE SAME TIME RECEIVE HIGH MECHANICAL STRENGTH VALUES AND THE DAMAGE IS LIMITED. - Google Patents

METHOD FOR DESENSITIZING AGAINST DEPARTMENT CORROSION IN LITHIUM-CONTAINING ALUMINUM ALLOYS, WHICH AT THE SAME TIME RECEIVE HIGH MECHANICAL STRENGTH VALUES AND THE DAMAGE IS LIMITED.

Info

Publication number
DE3670510D1
DE3670510D1 DE8686420293T DE3670510T DE3670510D1 DE 3670510 D1 DE3670510 D1 DE 3670510D1 DE 8686420293 T DE8686420293 T DE 8686420293T DE 3670510 T DE3670510 T DE 3670510T DE 3670510 D1 DE3670510 D1 DE 3670510D1
Authority
DE
Germany
Prior art keywords
mechanical strength
damage
lithium
same time
limited
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.)
Revoked
Application number
DE8686420293T
Other languages
German (de)
Inventor
Philippe Meyer
Max Reboul
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.)
Constellium Issoire SAS
Original Assignee
Pechiney Rhenalu SAS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9325580&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3670510(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Pechiney Rhenalu SAS filed Critical Pechiney Rhenalu SAS
Application granted granted Critical
Publication of DE3670510D1 publication Critical patent/DE3670510D1/en
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • 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
    • C22F1/057—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 copper as the next major constituent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Heat Treatment Of Steel (AREA)
  • Secondary Cells (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

1. A process for the heat treatment of Al alloys containing Li to improve their resistance to exfoliation corrosion while retaining a high level of mechanical strength and good resistance to damage characterised in that the final ageing operation is carried out in the following range of temperatures T (in degree C) and times t (in hours) : t >= 24 X 5 exp ((150-T)/30) t =< 80 X 5 exp ((150-T)/30) with : T =< 160 degrees C for Mg >= 2% T =< 160 degrees C-5 (2-% Mg) degrees C for 1 =< Mg =< 2% T =< 155 degrees C for Mg =< 1%.
DE8686420293T 1985-11-28 1986-11-26 METHOD FOR DESENSITIZING AGAINST DEPARTMENT CORROSION IN LITHIUM-CONTAINING ALUMINUM ALLOYS, WHICH AT THE SAME TIME RECEIVE HIGH MECHANICAL STRENGTH VALUES AND THE DAMAGE IS LIMITED. Revoked DE3670510D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8518208 1985-11-28

Publications (1)

Publication Number Publication Date
DE3670510D1 true DE3670510D1 (en) 1990-05-23

Family

ID=9325580

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686420293T Revoked DE3670510D1 (en) 1985-11-28 1986-11-26 METHOD FOR DESENSITIZING AGAINST DEPARTMENT CORROSION IN LITHIUM-CONTAINING ALUMINUM ALLOYS, WHICH AT THE SAME TIME RECEIVE HIGH MECHANICAL STRENGTH VALUES AND THE DAMAGE IS LIMITED.

Country Status (8)

Country Link
EP (1) EP0227563B1 (en)
JP (1) JPS62142752A (en)
AT (1) ATE52109T1 (en)
BR (1) BR8605809A (en)
CA (1) CA1291927C (en)
DE (1) DE3670510D1 (en)
ES (1) ES2014248B3 (en)
IL (1) IL80765A0 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5462712A (en) * 1988-08-18 1995-10-31 Martin Marietta Corporation High strength Al-Cu-Li-Zn-Mg alloys
US5259897A (en) * 1988-08-18 1993-11-09 Martin Marietta Corporation Ultrahigh strength Al-Cu-Li-Mg alloys
US5211910A (en) * 1990-01-26 1993-05-18 Martin Marietta Corporation Ultra high strength aluminum-base alloys
US5133931A (en) * 1990-08-28 1992-07-28 Reynolds Metals Company Lithium aluminum alloy system
US5234662A (en) * 1991-02-15 1993-08-10 Reynolds Metals Company Low density aluminum lithium alloy
DE4113352C2 (en) * 1991-04-24 1996-05-23 Hoogovens Aluminium Gmbh Process for the production of aluminum sheets
US5198045A (en) * 1991-05-14 1993-03-30 Reynolds Metals Company Low density high strength al-li alloy
US5240521A (en) * 1991-07-12 1993-08-31 Inco Alloys International, Inc. Heat treatment for dispersion strengthened aluminum-base alloy
KR940008071B1 (en) * 1991-12-26 1994-09-01 한국과학기술연구원 Heat treatment method of al-li
EP2231888B1 (en) 2007-12-04 2014-08-06 Alcoa Inc. Improved aluminum-copper-lithium alloys
US8333853B2 (en) 2009-01-16 2012-12-18 Alcoa Inc. Aging of aluminum alloys for improved combination of fatigue performance and strength
FR2945464B1 (en) * 2009-05-13 2012-03-23 Alcan Rhenalu PROCESS FOR WELDING ASSEMBLY OF ALUMINUM ALLOY PARTS.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0150456B1 (en) * 1983-12-30 1990-11-14 The Boeing Company Low temperature underaging of lithium bearing aluminum alloy
US4648913A (en) * 1984-03-29 1987-03-10 Aluminum Company Of America Aluminum-lithium alloys and method
DE3613224A1 (en) * 1985-08-20 1987-02-26 Boeing Co ALUMINUM LITHIUM ALLOY

Also Published As

Publication number Publication date
EP0227563A1 (en) 1987-07-01
ATE52109T1 (en) 1990-05-15
EP0227563B1 (en) 1990-04-18
CA1291927C (en) 1991-11-12
BR8605809A (en) 1987-08-25
ES2014248B3 (en) 1990-07-01
IL80765A0 (en) 1987-02-27
JPS62142752A (en) 1987-06-26

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation