7xxx SERIES ALUMINUM ALLOY PRODUCT Russian patent published in 2022 - IPC C22C21/10 C22F1/53 

FIELD: aerospace industry.

SUBSTANCE: invention relates to a deformed product, in particular, rolled, extruded or forged, made of aluminum alloy of the 7xxx series and can be used in the aerospace industry. The deformed product is made of aluminum alloy of the 7xxx series having the following composition, wt. %: Zn from 6.20 to 7.50, Mg from 2.15 to 2.85, Cu from 1.20 to 2.00, and Cu+Mg<4.50, and Mg<2.5+5/3(Cu - 1.2), Fe up to 0.25, Si up to 0.25 and optionally one or more elements selected from a group consisting of Zr up to 0.3, Cr up to 0.3, Mn up to 0.45, Ti up to 0.25, Sc up to 0.5, Ag up to 0.5, the rest is aluminum and impurities, and additionally may contain up to 0.3% of one or more of V, Ni, Co, Nb, Mo, Ge, Er, Hf, Ce, Y, Dy, Sr.

EFFECT: invention is aimed at obtaining a product made of an aluminum alloy of the 7xxx series, having high strength and resistance to stress corrosion cracking and hydrogen embrittlement after aging.

25 cl, 1 tbl