ALUMINUM-BASED ALLOY AND ARTICLE MADE THEREFROM Russian patent published in 2007 - IPC C22C21/18 C22C21/16 C22C21/14 

FIELD: nonferrous metallurgy.

SUBSTANCE: invention, in particular, relates to aluminum-copper-magnesium system and provides alloy for manufacturing aerospace-destination welded articles capable of working under loadings not only at ambient temperatures but also at short and long-term elevated temperature action. Alloy has following chemical analysis, wt %: copper 4.5-7.0, magnesium 1.75-4.5, manganese 0.25-0.8, titanium 0.05-0.45, iron 0.05-0.45, silicon 0.02-0.2, beryllium 0.001-0.07, hydrogen 1.8·10-6-3.1·10-5, calcium 0.0001-0.08, cobalt 0.02-0.45; at least one of the following elements: nickel 0.001-0.05, chromium 0.001-0.05, or zinc 0.001-0.05; one of the following elements: zirconium 0.0555-0.45 or vanadium 0.055-0.45; and aluminum - the balance.

EFFECT: enabled preparation of deformable aluminum-based alloy and article therefrom showing good weldability, little hot brittleness, and high strength of welded joint at ambient and elevated temperatures.

4 cl, 2 tbl