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ATE52109T1 - PROCESS FOR DESENSITIZING LITHIUM-CONTAINING ALUMINUM ALLOYS AGAINST SCALING CORROSION, AT THE SAME TIME MAINTAINING HIGH MECHANICAL STRENGTH VALUES AND LIMITING THE DAMAGE. - Google Patents

PROCESS FOR DESENSITIZING LITHIUM-CONTAINING ALUMINUM ALLOYS AGAINST SCALING CORROSION, AT THE SAME TIME MAINTAINING HIGH MECHANICAL STRENGTH VALUES AND LIMITING THE DAMAGE.

Info

Publication number
ATE52109T1
ATE52109T1 AT86420293T AT86420293T ATE52109T1 AT E52109 T1 ATE52109 T1 AT E52109T1 AT 86420293 T AT86420293 T AT 86420293T AT 86420293 T AT86420293 T AT 86420293T AT E52109 T1 ATE52109 T1 AT E52109T1
Authority
AT
Austria
Prior art keywords
mechanical strength
damage
desensitizing
lithium
limiting
Prior art date
Application number
AT86420293T
Other languages
German (de)
Inventor
Philippe Meyer
Max Reboul
Original Assignee
Pechiney Rhenalu
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=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE52109(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Pechiney Rhenalu filed Critical Pechiney Rhenalu
Application granted granted Critical
Publication of ATE52109T1 publication Critical patent/ATE52109T1/en

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)
  • Secondary Cells (AREA)
  • Heat Treatment Of Steel (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Preventing Corrosion Or Incrustation 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%.
AT86420293T 1985-11-28 1986-11-26 PROCESS FOR DESENSITIZING LITHIUM-CONTAINING ALUMINUM ALLOYS AGAINST SCALING CORROSION, AT THE SAME TIME MAINTAINING HIGH MECHANICAL STRENGTH VALUES AND LIMITING THE DAMAGE. ATE52109T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8518208 1985-11-28
EP86420293A EP0227563B1 (en) 1985-11-28 1986-11-26 Process od desensitization to exfoliating corrosion of lithium-containing aluminium alloys, resulting simultaneously in a high mechanical resistance and in good damage limitation

Publications (1)

Publication Number Publication Date
ATE52109T1 true ATE52109T1 (en) 1990-05-15

Family

ID=9325580

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86420293T ATE52109T1 (en) 1985-11-28 1986-11-26 PROCESS FOR DESENSITIZING LITHIUM-CONTAINING ALUMINUM ALLOYS AGAINST SCALING CORROSION, AT THE SAME TIME MAINTAINING HIGH MECHANICAL STRENGTH VALUES AND LIMITING THE DAMAGE.

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
RU2497967C2 (en) 2007-12-04 2013-11-10 Алкоа Инк. Improved aluminium-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
DE3483607D1 (en) * 1983-12-30 1990-12-20 Boeing Co AGING AT RELATIVELY LOW TEMPERATURES OF LITHIUM-CONTAINING ALUMINUM ALLOYS.
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
ES2014248B3 (en) 1990-07-01
EP0227563A1 (en) 1987-07-01
DE3670510D1 (en) 1990-05-23
EP0227563B1 (en) 1990-04-18
BR8605809A (en) 1987-08-25
IL80765A0 (en) 1987-02-27
JPS62142752A (en) 1987-06-26
CA1291927C (en) 1991-11-12

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EEFA Change of the company name
RZN Patent revoked