ALUMINUM-BASED ALLOY AND A PIECE MADE FROM THIS ALLOY Russian patent published in 2002 - IPC

FIELD: non-ferrous metal alloys. SUBSTANCE: invention relates to Al-Cu-Mg-Li alloys used as structural materials in aviation-and-space engineering. Alloy is composed of, wt %: lithium 1.7-2.0, titanium 0.01-0.1, copper 1.6-2.0, nickel 0.01-0.15, magnesium 0.7-1.1, manganese 0.01-0.4, zirconium 0.04-0.2, gallium 0.001-0.05, beryllium 0.02-0.2, hydrogen 1,5×10^-5-5,0×10^-5, at least one element from the group including: zinc 0.01-0.3, sodium 0.0005-0.001, antimony 0.00003-0.015, and aluminum - the balance. A piece made from this alloy is also provided. EFFECT: increased strength and improved process plasticity upon cold working of sheet. 2 cl, 2 tbl