This article is devoted to the study of initial phase obtaining alloy 1420, namely, a primary material with desired chemical composition. The effect alloying magnesium, zirconium and lithium on strength properties material. In work, following materials were used obtain cast aluminum Al-Mg-Zr-Li system: technical purity A0 or A5, magnesium Mg95, LE-1, E100, aluminum-zirconium ligature AlZr5, alu...