PRODUCT FROM ALUMINIUM ALLOY WITH HIGH RESISTANCE TO DAMAGES, NAMELY TO BE USED IN AVIATION AND SPACE INDUSTRY Russian patent published in 2013 - IPC C22C21/18 C22F1/57 

FIELD: metallurgy.

SUBSTANCE: invention refers to a product producing method and to the product obtained using the above method from deformed aluminium alloy of AA2000 series, which has increased strength and viscosity of damage and reduced growth rate of fatigue cracks and having the following composition, wt %: Cu 4.4 to 5.5, Mg 0.3 to 1.0, Fe < 0.20%, Si < 0.20, Zn 0.10 to 0.40 and Mn 0.15 to 0.35 as a dispersoid shaping element in combination with Ag 0.2 to 0.8 and with one or more dispersoid shaping elements (optionally) chosen from the group consisting of the following: Zr < 0.5, Sc < 0.7, Cr < 0.4, Hf < 0.3, Ti < 0.4, V < 0.4, aluminium and other impurities or random elements are the rest; at that, content of Mg and Cu corresponds to the ratio of -1.1[Mg]+5.38≤[Cu]≤5.5.

EFFECT: obtaining the product having balanced combination of increased strength and failure viscosity, increased fatigue strength and decreased growth rate of fatigue cracks.

21 cl, 8 dwg, 8 tbl, 3 ex