ARTICLE FROM Al-Mg ALLOY FOR USE AS ARMOUR PLATE Russian patent published in 2012 - IPC C22C1/08 C22F1/47 

FIELD: metallurgy.

SUBSTANCE: plate of 10 mm thickness or larger from aluminium alloy features higher durability. Note here that said aluminium alloy has the following chemical composition with the following components, in wt %: Mg 4.0-6.0, Mn 0.2-1.4, Zn not over 0.9, Zr < 0.3, Cr < 0.3, Sc < 0.5, Ti < 0.3, Fe < 0.5, Si < 0.45, Ag < 0.4, Cu < 0.25, other elements and unavoidable impurities of each aforesaid element - <0.05, sum - <0.20, aluminium making the rest. Plate features elongation in L direction exceeding 10% and tensile strength making, t least, 330 MPa. Proposed plate is produced by casting, preheating and/or homogenising, hot rolling, first cold forming, annealing at less than 350°C, and second cold forming.

EFFECT: higher resistance to kinetic projectiles, better formability.

27 cl, 3 dwg, 2 tbl, 2 ex