High strength aluminum alloy, internal combustion engine piston comprising said alloy, and method for manufacturing internal combustion engine piston
An aluminum alloy having excellent high temperature strength and thermal conductivity; and an internal combustion engine piston including the alloy. The aluminum alloy includes 11.0-13.0% Si, ≤0.3% Fe, 0.3-2.0% Mg, 2.0-5.0% Cu, 3.0-4.0% Ni, 0.2-1.0% Mn, 0.05-0.4% Cr, and 0.05-0.4% V, with the remainder including aluminum and unavoidable impurities.
1. An aluminum alloy consisting of
11.0-13.0% Si,
≤0.3% Fe,
0.3-2.0% Mg,
2.0-5.0% Cu,
3.2-4.0% Ni,
0.2-1.0% Mn,
0.05-0.4% Cr,
0.05-0.4% V,
0.05-0.4% Ti,
0.05-0.4% Zr,
0.0005-0.015% P, and
the remainder consisting of aluminum and unavoidable impurities, wherein a crystallized product structure of the alloy is granular.
2. An aluminum alloy for an internal combustion engine piston, said aluminum alloy having the composition according to claim 1 .
3. An internal combustion engine piston made of an aluminum alloy, said piston comprising an aluminum alloy having the composition according to claim 1 and a thermal conductivity of at least 135 W/(k·m).
4. A method for manufacturing an internal combustion engine piston, comprising casting an aluminum alloy having the composition according to claim 1 and performing an aging treatment.
5. The method for manufacturing an internal combustion engine piston according to claim 4 , wherein the aluminum alloy has a thermal conductivity of at least 135 W/(k·m).