Abstract

Attention has been given to the microstructural refinement by high shear processing of hypereutectic Al-Mg2Si alloys as a potential in-situ composite for high-performance structural applications. The results demonstrate that intensive melt shearing promotes the formation of a refined compact polyhedral morphology of primary Mg2Si and refines both the eutectic cell size and the lamellar spacing of Al-Mg2Si pseudo eutectic structures. The refinement mechanisms are discussed.

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