FIELD: metallurgy.
SUBSTANCE: invention relates to aluminium alloys used in aerospace industry. Alloy contains following components: approximately from 3 up to 4.5 wt % Cu, from more than 0.6 up to approximately 2 wt % Mg, approximately from 0.01 up to 0.8 wt % Li, up to approximately 2.0 wt % Zn, up to approximately 1.0 wt % of elements, forming dispersion, the rest is aluminium and random elements, and impurities. Content of Cu and content of Mg, attend in alloy, less range of its solubility. Fracture strength and alloy durability are grow at increasing of lithium value from 0.01 up to 0.8 wt %.
EFFECT: it is received alloy allowing improved combination of properties of fracture strength and durability .
20 cl, 14 dwg, 5 tbl, 2 ex
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