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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: International Sampe Technical Conference Título del capítulo: The effects of extra Si and heat treatment on the microstructure and tensile properties of Al-15%Mg2Si in-situ composite
In this study, the effect of extra Si and heat treatment on microstructure and tensile properties of in-situ Al-15%Mg2Si composite were investigated. Thus, different amounts of Si (1, 3, 5 and 7 wt.%) were added into the molten MMC before solution and aging heat treatment. The optical microscopy was used for microstructural investigation. The microstructural examinations showed that Si addition does not change the morphology of primary Mg 2Si particles with irregular and dendritic form and causes the formation of ternary of compounds of eutectic phase and extra Si. According to the microstructural observations, heat treatment also caused a considerable modification on the morphology of the Mg2Si phases. The results obtained from tensile testing also showed a direct relationship between microstructural changes and tensile properties.
