2016 | OriginalPaper | Buchkapitel
Effect of Low Cu Amounts and Pre-Deformation on the Precipitation in Al-Mg-Si Alloys
verfasst von : Takeshi Saito, Shinji Muraishi, Calin D. Marioara, Randi Holmestad
Erschienen in: ICAA13 Pittsburgh
Verlag: Springer International Publishing
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Transmission electron microscopy (TEM) studies were performed on two Al-Mg-Si alloys with low Cu additions (0.01 and 0.10 wt%) in order to investigate the effect of Cu and 10% pre-deformation on precipitate microstructure and its connection to mechanical properties. After 300 minutes aging at 190°C, fine microstructures associated with high hardness were observed in the alloy with 0.10% Cu. Pre-deformation led to heterogeneous distributions of precipitates along dislocations, causing microstructure coarsening. This effect was less pronounced in the alloy with the higher Cu amount.