| 摘要 |
construction materials in aviacosmetic engineering and transport vehicles. SUBSTANCE: highly string Al-Zn-Mg-Cu-based alloy comprises, wt.%; zinc, 5.0-7.0; magnesium, 1.8-2.8; copper, 1.4- 2.0; chromium, 0.1-0.25 iron, 0.05-0.25; titanium, 0.005-0.07; silicon, 0.02-0.1; manganese, 0.2-0.6; and the balance, manganese to chromium ratio being more or equal to 1.3. Iron to silicon ratio is more or equal to 1.5. EFFECT: improved technological characteristics of alloy during casting, cracking resistance, plasticity, corrosion resistance and desired level of strength for all types of semiproducts. 4 cl, 1 ex, 2 tbl
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