Journal ArticleOpen Access
Mechanical properties of hypoeutectic, eutectic, and hypereutectic Al-Si automotive alloys under ageing treatment
Author Affiliations
Bangladesh University of Engineering and Technology, International University of Business Agriculture and Technology
Published InEngineering review
Year2024
Citations4
Abstract
The role of different levels of silicon on mechanical properties has been investigated through tensile and impact tests along with fractography of Al-Si automotive alloys. Cast alloys are given precipitation strengthening through T6 heat treatment. It has been experimentally determined that ageing these alloys leads to the enhancement of tensile properties, which is mainly caused by the precipitation of the intermetallics such as Al2Cu, Mg2Si, and Al2CuMg within the Al-matrix. The ductility of these alloys primarily exhibit a diminishing trend as the ageing temperature increased. This diminishing trend can be attributed to the formation of fine precipitates like GP zones and metastable phases. However, after reaching a certain temperature, the ductility started to increase again. This is caused by the…
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