METHOD OF RECEIVING OF CONSTRUCTIONAL MATERIAL FROM ALLOY ON BASIS OF ALUMINIUM WITH MAGNESIUM CONTENT Russian patent published in 2010 - IPC C22F1/47 C22C21/06 

FIELD: metallurgy.

SUBSTANCE: there is received constructional material from alloy on the basis of aluminium, containing components at following ratios, wt %: magnesium 10.50-15.50, manganese 0.05-0.10, zirconium 0.01-0.15, titanium 0.09-0.15, silicon and iron not more than 0.08, aluminium is the rest. Crystallisation of melt is implemented in rotary crystalliser at gravitation coefficient, equal to 180-250, during time of melt existence, equal to 12-15 s/kg, and cooling rate not higher than 5°C/s. Ingot is thermal treated and rolled. At first it is heated during 2-4 hours at temperature 340-380°C, then at that temperature is implemented its hot rolling up to thickness 4-8 mm at a degree of deformation in each cycle up to 30% and final temperature of semi-finished rolled products in the range 310-330°C. Then it is implemented cold rolling of semi-finished rolled products at a degree of deformation in each cycle up to 50% with intermediate softening during 0.5-2.0 hours at tempearture 310-390°C up to required thickness 0.5-2.0 mm and it is implemented finish annealing of rolling during 5-40 minutes at temperature 400-450°C.

EFFECT: increased durability, plasticity and manufacturability of rolling.

2 dwg, 2 cl