Aluminum-lithium alloys having improved corrosion resistance

Details Aluminum-lithium alloys having improved corrosion resistance Aluminum-lithium alloys having improved corrosion resistance

C - Chemistry, Metallurgy

22

C

148/35.5

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

Patent

CA 1256354

ALUMINUM-LITHIUM ALLOYS HAVNIG IMPROVED CORROSION RESISTANCE A B S T R A C T An aluminum base alloy wrought product having im- proved corrosion resistance in addition to combinations of strength and toughness. The product comprises 2.2 to 3.0 wt.% Li, 0.4 to 2.0 wt.% Mg, 0.2 to 1.6 wt.% Cu, 0 to 2.0 wt.% Mn, 0.5 wt.% max. Fe, 0.5 wt.% max. Si, the balance aluminum and incidental impurities and has the ability to develop improved combinations of strength and toughness in response to an aging treatment. Prior to an aging step, the product having imparted thereto a working effect equivalent to stretching so that after an aging step it has improved combinations of strength and toughness.

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