ALUMINIUM ALLOY PREPARATION METHOD Russian patent published in 2013 - IPC C22C1/03 C22C21/06 

FIELD: metallurgy.

SUBSTANCE: when preparing aluminium alloy containing Mg, to the molten alloy there added is Ca, Sr and Ba in such amount that calcium content is 0.001-0.5 wt %, and their ratio is within the limits enclosed between the lines attaching five points in dwg. 1: point E (Ca: 28 atm %, Sr: 0 atm %, Ba: 72 atm %), point F (Ca: 26 atm %, Sr: 30 atm %, Ba: 44 atm %), point G (Ca: 54 atm %, Sr: 46 atm %, Ba: 0 atm %), point H (Ca: 94 atm %, Sr: 6 atm %, Ba: 0 atm %), point T (Ca: 78 atm %, Sr: 0 atm %, Ba: 22 atm %), at exclusion of ratios on the lines formed between the above points.

EFFECT: method allows inhibiting losses due to oxidation of molten alloy without using Be capable of doing harm to human health.

6 cl, 5 ex, 11 tbl, 2 dwg