| 摘要 |
The invention relates to a casting with high mechanical resistance under both static and fatigue conditions and under hot creep, made from an aluminium alloy having the following composition: 3 - 11% Si, preferably 5 - 9%; < 0.5% Fe, preferably < 0.3%, more preferably < 0.19% or even 0.12%; 2 - 5% Cu, preferably 2.5 - 4.2%, more preferably 3 - 4%; 0.05 - 0.5% Mn, preferably 0.08 - 0.2%; 0.1 - 0.25% Mg, preferably 0.1 - 0.2%; < 0.3% Zn, preferably < 0.1%; < 0.3% Ni, preferably < 0.1%; 0.05 - 0.2% V, preferably 0.1 - 0.19%; 0.05 - 0.25% Zr, preferably 0.08 - 0.2%; 0.01 - 0.25% Ti, preferably 0.05 - 0.2%; and < 0.05% of each of the other elements and 0.15% in total, the remainder being aluminium. In particular, the invention relates to cylinder heads of supercharged diesel or petrol internal combustion engines. |
