METHOD FOR PRODUCING SHEETS OF ALLOY OF ALUMINIUM-MAGNESIUM-MANGANESE SYSTEM Russian patent published in 2017 - IPC C22F1/47 C22C1/02 C22C21/06 

FIELD: metallurgy.

SUBSTANCE: invention relates to methods for producing sheets of aluminium alloys on the basis of aluminium-magnesium-manganese system used for manufacturing a number of high-duty structures in shipbuilding, aircraft and rocket industry, in car-building for high-speed trains, as well as for manufacturing of automobile bodies. The method includes crystallisation of ingots at a rate of at least 100 k/s with casting temperature 700-720°C, homogenisation annealing at 360°C for 6 hours, after which rolling is carried out at room temperature with total reduction of 80% followed by recrystallisation annealing at 320°C for 2 hours.

EFFECT: production of sheets with uniform fine-grain structure and uniform distribution of dispersed nano-sized particles.

1 ex, 1 tbl