Aluminum-lithium alloys

Details Aluminum-lithium alloys Aluminum-lithium alloys

C - Chemistry, Metallurgy

22

C

75/79, 148/35.5

C22C 21/00 (2006.01) C22F 1/04 (2006.01)

Patent

CA 1228490

Abstract of the Disclosure An aluminum base alloy wrought product suitable for aging and having the ability to develop improved strength in response to an aging treatment without impairing fracture toughness properties is disclosed. The product is comprised of 0.5 to 4.0 wt.% Li, 0 to 5.0 wt.% Mg, up to 5.0 wt.% Cu, 0 to 1.0 wt.% Zr, 0 to 2.0 wt.% Mn, 0 to 7.0 wt.% Zn, 0.5 wt.% max. Fe, 0.5 wt.% max. Si, the balance aluminum and incidental impurities. The product has imparted thereto, prior to an aging step, a working effect equivalent to stretching an amount greater than about 4% in order that, after said aging, improved strength and fracture toughness combinations are obtained.

475903

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