SUPERPLASTIC ALLOY BASED ON Al-Mg-Si SYSTEM Russian patent published in 2017 - IPC C22C21/08 C22C21/12 

FIELD: metallurgy.

SUBSTANCE: invention relates to Al-Mg-Si aluminium alloys, which can be used for manufacturing semi finished products and products in various branches of industry by the method of superplastic forming. Prior to superplastic forming, the sheets of developed alloy have a non-recrystallised structure and exhibiting high-speed super-plasticity at a temperature of 460°C and strain rate of 10^-2 s^-1, at that relative elongation is not less than 400%. The superplastic alloy based on aluminium contains, wt %: magnesium 1-1.2, silicon 0.8-1, iron 0.8-1.2, nickel 0.8-1.2, copper 0.3-0.6, zirconium 0.15-0.25, scandium 0.15-0.25, aluminium - the rest.

EFFECT: high corrosion resistance and air quench capability.

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