METHOD OF FORMING HIGH-STRENGTH AND CORROSION-RESISTANT STRUCTURE OF ALUMINIUM-MAGNESIUM ALLOY Russian patent published in 2018 - IPC C22F1/47 B21J5/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to technology of thermomechanical treatment of aluminium alloy with magnesium content not more than 6 wt % for producing deformed semi-finished products and light-weight products therefrom for using in aerospace, shipbuilding and automobile industries. Method for producing billets from high-strength and corrosion-resistant aluminium-magnesium alloy with magnesium content not more than 6 wt % includes casting of alloy and thermomechanical treatment of castings with production of billets. Thermomechanical treatment of castings is carried out by rolling at 0.4 mm/s rate at room temperature to achieve total true degree of deformation e=1.3 in the produced billets, and then by annealing at 300-325°C for 30 minutes to form billets of homogeneous structure with average grain size 0.4-0.5 mcm.

EFFECT: enhanced strength and corrosion resistance.

3 cl, 2 ex