CAST BRASS Russian patent published in 2017 - IPC C22C9/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, in particular to a composition of multicomponent deformable copper alloys containing Zn, Mn, Al, Si, Ni, Cr and intended for production of cast workpieces subjected to plastic working for production of parts, operating in conditions of higher tribotechnical wear. Cast brass contains zinc, manganese, aluminium, silicon, chromium, nickel and copper and has a structure consisting of solid solution matrix hardened with intermetallic compounds, wherein particles of intermetallic compounds have an equiaxial shape and consist of a core of chromium silicide and a shell of manganese silicide and are distributed in alloy volume with density of 50–138 thousand particles/mm³.

EFFECT: higher hardness of cast brass.

1 cl, 3 dwg, 1 tbl