ALLOY Al-Zn-Mg-Cu Russian patent published in 2009 - IPC C22C21/10 C22F1/53 

FIELD: metallurgy.

SUBSTANCE: current invention relates to product made of aluminium alloy containing wt %: zinc 6.5-9.5, magnesium 1.92-2.1%, copper 1.0-1.8, iron < 0.14, silicon < 0.20, preferentially < 0.12, zirconium 0.04-0.3, it is not necessary, one or more from: scandium < 0.7, chrome < 0.4, hafnium < 0.3, manganese < 0.8, titanium < 0.4, vanadium < 0.4 and unintentional impurity < 0.05 each and < 0.15 all together, and the rest is aluminium. Product is manufactured by method including ingot casting, its preheating, hot processing by pressure till receiving of preformed blank by one or more methods, chosen from the group containing of deform, punching and hammering, not necessary reheating of predeformed blank, hot treatment by pressure till the receiving of mould blank of necessary form, thermal treatment to solid solution of mentioned mould blank at temperature and during the time, enough for transfer into solid solution to the point all soluble components in alloy, hardening of heat-treat to solid solution blanks by means of hardening by spray cooling or hardening by water immersion or different hardening compound, optional tension or pressing of hardened workpiece, artificial aging of hardened and optional stretch or compressed workpiece till achieving of desirable condition. IT is received product allowing high tensile and improved combination of viscosity and corrosion behavior.

EFFECT: receiving of product allowing high tensile and improved combination of viscosity and corrosion behavior.

50 cl, 4 dwg, 15 tbl, 8 ex