HIGHLY RESISTANT ALUMINUM-BASED ALLOY AND ARTICLE MADE FROM SAID ALLOY

摘要

The invention relates to high strength aluminium - based alloy of Al-Zn-Mg-Cu system and the articles made thereof. The present alloy is characterized by the combination of improved properties: flowability, technological plasticity, fracture toughness while preserving high levels of strength properties. Said alloy comprises (mass.%): and at least one element from the group of alkali-earth metals: the sum Zr+2Ti ≤ 0.3%, and the ratio Si:Be ≥ 2. The invented alloy is suitable for producing large-sized, extruded, rolled and forged semiproduct articles used for manufacture of loaded members of aircraft, cars and other machinery.