PRODUCT MADE OF ALUMINIUM ALLOY WITH HIGH RESISTANCE AGAINST DAMAGES, PARTICULARLY, FOR APPLICATION IN AEROSPACE INDUSTRY

摘要

FIELD: metallurgy.;SUBSTANCE: invention relates to aluminium alloy, particularly it relates aluminium alloys of type Al-Cu-Mg products, implemented of them and implementation method for such products. Product is implemented from deformed aluminium alloy, containing, wt %: Mg and Cu, content range of which is limited, as it is shown on figure 1 by quadrangle with defined vertexes A(0.45; 5.35), B(0.75; 5.35), C(0.75; 4.92) and D(0.45; 5.20), Fe 0.20, Si 0.20, Zn 0.40, and Mn in the range from 0.15 till less than 0.4 in aggregate with Zr in the range from 0.06 till 0.18 and not obligatory by one or more elements-dispersoid-formers, chosen from group, consisting of: Sc 0.7, Cr 0.4, Hf 0.3, Ag 1.0, Ti 0.4, V 0.4, aluminium and unavoidable admixtures - the rest.;EFFECT: receiving of product, allowing balance combination of high durability and low growth rate of fatigue crack.;16 cl, 6 dwg, 8 tbl, 3 ex