CAST ALUMINIUM ALLOY-(SPARINGLY-ALLOYED HIGH-STRENGTH SILUMIN) Russian patent published in 2012 - IPC C22C21/04 

FIELD: metallurgy.

SUBSTANCE: invention may be used in production automotive parts operated at high loads and temperatures of up to 150-200°C: cylinder heads, water pump housings, inlet manifolds, etc. Proposed allow comprises components in the following weight ratio, wt %: silicon - 8.6-10.2, copper - 0.3-0.5, magnesium - 0.35-0.5, manganese - 0.1-0.45, iron - 0.2-0.5, aluminium and admixtures making the rest. This alloy features temperature of equilibrium solidus of 550°C while that of liquidus does not exceed 605°C. Structure of this alloy differs in that iron is completely bonded into skeleton-like spots of phase Al₁₅(Fe,Mn)₃Si₂, while magnesium is completely bonded with secondary spots of phase Al₅Cu₂Mg₈Si₆ (Q').

EFFECT: alloy for production of complex-shape high-strength casts.

3 cl, 3 dwg, 3 ex, 2 tbl