HIGHLY STRING ALUMINIUM-BASED ALLOY AND PRODUCT MADE OF SAID ALLOY Russian patent published in 2001 - IPC

FIELD: metallurgy, more particularly Al-Zn- Mg-Cu based alloys for manufacturing large-size products of intricate shape from massive pressed, forged and rolled semiproducts for airplane or other structures. SUBSTANCE: alloy comprises, wt. %: zinc, 635-8.0; beryllium, 0.0001-0.05; magnesium, 0.5-2.5; copper, 0.8-1.3; iron, 0.06- 0.25; silicon, 0.01-0.20; zirconium, 0.07-0.20; manganese, 0.001-0.1; chromium, 0.001-0.05; titanium, 0.03-0.10 and at least one element from group consisting of alkali-earth metals; potassium, 0.001-0.01; sodium, 0.0001-0.01; calcium, 0.0001-0.01; aluminium, the balance. In preferred embodiment, ratios of alloys are as follows: Zn+2Ti <=0.3%; Si : Be > =0.2. EFFECT: improved technological properties of alloys during casting during deformation (technological plasticity higher service properties and higher strength characteristics. 5 cl, 1 ex, 3 tbl