ALUMINUM-BASE ALLOY Russian patent published in 2004 - IPC

FIELD: metallurgy, alloys.

SUBSTANCE: invention relates to high-strength aluminum alloys designated for working in welded loaded constructions. Alloy can be used in form of stamped, rolled and pressed semi-finished products in different branches of industry. Invention proposes base-base alloy comprising copper, lithium, zirconium, cadmium, titanium, boron, manganese, tin, bismuth, nickel and beryllium in the following ratio of components, wt.-%: copper, 5.5-6.8; lithium, 0.5-2.0; zirconium, 0.05-0.20; cadmium, 0.05-0.20; titanium, 0.02-0.15; boron, 0.0002-0.05; manganese, 0.05-0.8; beryllium, 0.0001-0.03; tin, 0.005-0.1; bismuth, 0.005-0.1; nickel, 0.01-0.05, and base, the balance wherein the ratio content of tin and bismuth has to be = 1:1. Invention provides the development of alloy allowing to enhance safety of sealed welded constructions working in the range of temperatures from -253 to 200 C and to reduce mass of articles and units applying in aerospace technique of the new generation by 20-30%.

EFFECT: valuable properties of alloy.

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