METHOD OF MODIFICATION OF ALLOYS ON BASE OF ALUMINIUM AND CAST PRODUCED WITH IMPLEMENTATION OF THIS METHOD Russian patent published in 2008 - IPC C22C1/06 C22C21/02 C22B9/10 

FIELD: metallurgy.

SUBSTANCE: invention refers to metallurgy and can be used at production of various items by methods of shaped casting, particularly of case parts of automobile engine, disks of automobile wheels, and radiator cases. The method of modification of alloys on aluminium base, containing from 5 to 13 mass% of silicon, includes introducing into melt as modifiers at least two elements out of group: cerium, lanthanum, neodymium, and praseodymium in total amount from 0.1 to 0.5 mass % and silicon nitride Si₃N₄ in form of powder at amount from 0.001 to 0.05 mass %. Due to crumbling of (Al)+(Si) of eutectic the plasticity is increased with maintaining high strength and porosity of casts out of alloys on the base of aluminium is decreased.

EFFECT: increased plasticity of alloy with maintaining high strength and decreased porosity of casts.

6 cl, 1 dwg, 3 tbl, 2 ex