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GB2402943A - Method for producing a high strength A1-Zn-Mg-Cu alloy - Google Patents

Method for producing a high strength A1-Zn-Mg-Cu alloy Download PDF

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Publication number
GB2402943A
GB2402943A GB0423402A GB0423402A GB2402943A GB 2402943 A GB2402943 A GB 2402943A GB 0423402 A GB0423402 A GB 0423402A GB 0423402 A GB0423402 A GB 0423402A GB 2402943 A GB2402943 A GB 2402943A
Authority
GB
United Kingdom
Prior art keywords
hours
less
product
ingot
alloy
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.)
Granted
Application number
GB0423402A
Other versions
GB2402943B (en
GB0423402D0 (en
Inventor
Rinze Benedictus
Alfred Ludwig Heinz
Christian Joachim Keidel
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.)
Novelis Koblenz GmbH
Original Assignee
Corus Aluminium Walzprodukte GmbH
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
Application filed by Corus Aluminium Walzprodukte GmbH filed Critical Corus Aluminium Walzprodukte GmbH
Publication of GB0423402D0 publication Critical patent/GB0423402D0/en
Publication of GB2402943A publication Critical patent/GB2402943A/en
Application granted granted Critical
Publication of GB2402943B publication Critical patent/GB2402943B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Steel (AREA)
  • Metal Rolling (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Conductive Materials (AREA)

Abstract

The present invention relates to a method for producing a high strength AI-Zn-Cu-Mg alloy with an improved fatigue crack growth resistance and a high damage tolerance, comprising the steps of casting an ingot with the following composition (in weight percent) Zn 5.5- 9.5, Cu 1.5 - 3.5, Mg 1.5 - 3.5, Mn < 0.25, Zr < 0.25, Cr < 0.10, Fe < 0.25, Si < 0.25, Ti < 0.10. Hf and/or V < 0.25, other elements each less than 0.05 and less than 0.15 in total, balance aluminium, homogenising and/or pre-heating the ingot after casting, hot working the ingot and optionally cold working into a worked product of more than 50 mm thickness, solution heat treating, quenching the heat treated product, and artificially aging the worked and heat-treated product, wherein the aging step comprises a first heat treatment at a temperature in a range of 105{C to 135{C for more than 2 hours and less than 8 hours and a second heat treatment at a higher temperature than 135{C but below 170{C for more than 5 hours and less than 15 hours. The product achieved by the method exhibits a compression yield strengh of at least 510 Mpa and an ST elongation at S/2 of at least 3.0%. The invention concerns a weldable plate product of such high strength Al-Zn-Cu-Mg having a thickness of more than 50 mm and an aircraft structural member produced from such alloy.

Description

GB 2402943 A continuation (74) Agent and/or Address for Service: Corus
Intellectual Property Department Corus Legal Services, 30 Millbank, LONDON, SW1 4WY, United Kingdom
GB0423402A 2002-06-24 2003-06-11 Method for producing a high strength Al-Zn-Mg-Cu alloy Expired - Lifetime GB2402943B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02077549 2002-06-24
PCT/EP2003/006208 WO2004001080A1 (en) 2002-06-24 2003-06-11 METHOD FOR PRODUCING A HIGH STRENGTH Al-Zn-Mg-Cu ALLOY

Publications (3)

Publication Number Publication Date
GB0423402D0 GB0423402D0 (en) 2004-11-24
GB2402943A true GB2402943A (en) 2004-12-22
GB2402943B GB2402943B (en) 2006-03-29

Family

ID=29719740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0423402A Expired - Lifetime GB2402943B (en) 2002-06-24 2003-06-11 Method for producing a high strength Al-Zn-Mg-Cu alloy

Country Status (9)

Country Link
US (1) US20050006010A1 (en)
CN (1) CN100451149C (en)
AU (1) AU2003277929A1 (en)
BR (1) BR0312101B1 (en)
CA (1) CA2485524C (en)
DE (2) DE10392805T5 (en)
FR (1) FR2841264B1 (en)
GB (1) GB2402943B (en)
WO (1) WO2004001080A1 (en)

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

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Also Published As

Publication number Publication date
CA2485524C (en) 2010-11-16
DE10392805T5 (en) 2005-06-02
US20050006010A1 (en) 2005-01-13
CN100451149C (en) 2009-01-14
DE10392805B4 (en) 2022-11-17
FR2841264A1 (en) 2003-12-26
BR0312101B1 (en) 2013-05-14
GB2402943B (en) 2006-03-29
FR2841264B1 (en) 2007-05-11
CN1656240A (en) 2005-08-17
WO2004001080A1 (en) 2003-12-31
AU2003277929A1 (en) 2004-01-06
CA2485524A1 (en) 2003-12-31
GB0423402D0 (en) 2004-11-24
BR0312101A (en) 2005-03-29

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PE20 Patent expired after termination of 20 years

Expiry date: 20230610