Improved mechanical properties of the high pressure die casting alloy Al Si{sub}9Cu{sub}3(Fe)(Zn) as a result of the combination of natural and artificial ageing

摘要

The present study was performed on the alloy Al Si{sub}9Cu{sub}3(Fe)(Zn) (EN 1706: 1998) to investigate the effect of different heat treatment conditions. High pressure die cast samples were quenched directly after casting and subsequently stored at room temperature or elevated temperatures. Combinations of natural and artificial ageing were also tested. The static mechanical properties of the alloy were measured at all stages. The results show that it is possible to attain improved mechanical properties by an optimised combination of both treatments.