Effect of magnesium content on the semi solid cast microstructure of hypereutectic aluminium-silicon alloys

Abstract

Litterature review -- Principles of semi solid metal (SSM) processing -- Solidification characterization and thermodynamic evaluation of hypereutectic A1-Si alloys -- Mechanical properties of A1-Si alloys -- Methodology and experimental procedures -- Alloys under study -- Thermodynamic evaluation of the alloy system -- Preparing the high Mg content alloys -- Measurement of density by Archimedes's principle -- Microstructural characterization -- Rheological characterization -- Results and scientific findings -- Thermodynamic evaluation of hypereutectic A1-Si (A390) alloy with addition of Mg content -- Effects of Mg content on the evolution of eutectic microstructure for conventionnally cast and rheocast hypereutectic A1-Si alloy -- Effect of isothermal ageing on the semi solid microstructure of rheoprocessed and partially remelted of A390 alloy with 10% Mg addition -- Rheological characterization of hyper-eutectic A1Si sllloy with 10% Mg -- General discussion -- Contributions and recommendation.

Uncontrolled Keywords

Alliages aluminium-magnésium-silicium -- Microstructure; Alliages eutectiques -- Microstructure