METHOD FOR MAKING ARMOR SHEETS AND PLATES OF ALUMINIUM BASE ALLOYS AND ARTICLE OF SUCH SHEETS AND PLATES Russian patent published in 2005 - IPC

FIELD: rolling processes and equipment, namely manufacture of armor sheets and plates of aluminum base alloys used in aircraft- and ship manufacture, for making armored transport vehicles and so on.

SUBSTANCE: method for making armor sheets and plates of aluminum base Al-Mg-Mn alloys with Mg content no less than 4 mass % comprises steps of hot rolling of ingot to plate and finish rolling of it; performing as finish rolling warm rolling at temperature 80 - 300°C with total deformation degree no less than 60%; preferably realizing warm rolling at temperature 250 - 290°C with total deformation degree 65 - 80%. Invention provides ballistic protection degree 738 - 742 m/s for plates with thickness 38.0 -38.2 mm at firing on with armor-piercing shells 7.62.

EFFECT: improved resistance against ballistic action due to constant strength and ductility values at high corrosion resistance, good welding capability and small mass.

4 cl, 3 dwg, 2 tbl, 2 ex