IMPROVED 7XXX ALUMINUM ALLOYS

IMPROVED 7XXX ALUMINUM ALLOYS

New 7xxx aluminum alloys alloys are disclosed. The new 7xxx aluminum alloys may include 5.0-9.0 wt. % Zn, 1.30-2.05 wt. % Mg, 1.10-2.10 wt. % Cu, wherein 2.55≤(wt. % Cu+wt. % Mg)≤3.85, at least one of (i) 0.03-0.40 wt. % Mn and 0.02-0.15 wt. % Zr, wherein 0.05≤(wt. % Zr+wt. % Mn)≤0.50, up to 0.20 wt...

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Hauptverfasser: NORWOOD, Carolyn, G, KARABIN, Lynette, M, NEWMAN, John, M
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Sprache:eng ; fre ; ger
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ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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creator NORWOOD, Carolyn, G
KARABIN, Lynette, M
NEWMAN, John, M
description New 7xxx aluminum alloys alloys are disclosed. The new 7xxx aluminum alloys may include 5.0-9.0 wt. % Zn, 1.30-2.05 wt. % Mg, 1.10-2.10 wt. % Cu, wherein 2.55≤(wt. % Cu+wt. % Mg)≤3.85, at least one of (i) 0.03-0.40 wt. % Mn and 0.02-0.15 wt. % Zr, wherein 0.05≤(wt. % Zr+wt. % Mn)≤0.50, up to 0.20 wt. % Cr, up to 0.20 wt. % V, up to 0.20 wt. % Fe, up to 0.15 wt. % Si, up to 0.15 wt. % Ti, and up to 75 ppm B, the balance being aluminum, incidental elements and impurities. The new 7xxx aluminum alloys may be in the form of a 7xxx aluminum alloy sheet product having a thickness of from 0.5 to 4.0 mm and comprising at least 15 vol. % recrystallized grains. The new alloys may realize an improved combination of at least two of strength, elongation, fracture behavior and corrosion resistance.
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The new 7xxx aluminum alloys may include 5.0-9.0 wt. % Zn, 1.30-2.05 wt. % Mg, 1.10-2.10 wt. % Cu, wherein 2.55≤(wt. % Cu+wt. % Mg)≤3.85, at least one of (i) 0.03-0.40 wt. % Mn and 0.02-0.15 wt. % Zr, wherein 0.05≤(wt. % Zr+wt. % Mn)≤0.50, up to 0.20 wt. % Cr, up to 0.20 wt. % V, up to 0.20 wt. % Fe, up to 0.15 wt. % Si, up to 0.15 wt. % Ti, and up to 75 ppm B, the balance being aluminum, incidental elements and impurities. The new 7xxx aluminum alloys may be in the form of a 7xxx aluminum alloy sheet product having a thickness of from 0.5 to 4.0 mm and comprising at least 15 vol. % recrystallized grains. 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subjects ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
title IMPROVED 7XXX ALUMINUM ALLOYS
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