ALUMINUM-BASE ALLOY AND ARTICLE MADE OF THEREOF Russian patent published in 2003 - IPC

FIELD: metallurgy. SUBSTANCE: invention relates to deformable aluminum alloys of system magnesium- zinc-copper-magnesium. Base-base alloy comprises the following components, zinc, 5.5-9.0; magnesium, 1.5- 3.0; copper, 1.4-3.0; nickel, 0.002-0.3; iron, 0.002-0.3; titanium, 0.02-0.1; vanadium, 0.001-0.15; aluminum, the balance. Ratio of nickel to iron is 1, not less, and sum of nickel and titanium is 0.2, not above. Invention provides the enhancement of hardenability, destruction viscosity value K_1c and longevity at low-cycle fatigue. Alloy is designated as structural material in aerospace industry and machine engineering. EFFECT: improved and valuable properties of alloy. 4 cl, 2 tbl