Thick products made of 7XXX alloy and manufacturing process

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12252771
APP PUB NO 20220389558A1
SERIAL NO

17678591

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention relates to an aluminum alloy for the manufacture of thick blocks comprising (as a percentage by weight), Zn: 5.3-5.9%, Mg: 0.8-1.8%, Cu: <0.2%, Zr: 0.05 to 0.12%, Ti<0.15%, Mn<0.1%, Cr<0.1%, Si<0.15%, Fe<0.20%, impurities having an individual content of <0.05% each and <0.15% in total, the rest aluminum. The alloy may be used in a process comprising the steps of:

    (a) casting a thick block of an alloy according to the invention(b) solution heat treating said cast block at a temperature of 500 to 560° C. for 10 minutes to 20 hours,(c) cooling said solution heat treated block to a temperature below 100° C.,(d) tempering said solution heat treated and cooled block by heating to 120 to 170° C. for 4 to 48 hours,

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Patent Owner(s)

  • CONSTELLIUM ISSOIRE; CONSTELLIUM VALAIS SA (AG, LTD)

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fournier, Jean-Etienne Basse-Nendaz, CH 2 4
Gasqueres, Cedric Aix en Provence, FR 4 20

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