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

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

Rheological characteristics of hypereutectic Al-Si (A390) in the semi-solid state

Conventional (non stirred) solidification -- Non-dendritic solidification -- Rheology of suspensions -- Characteristics of A390 alloy -- Microstructure of undercooled hypereutetic A1-Si alloys -- Advantages and disadvantages of A390 alloy -- The fragmentation mechanism of the primary silicon under shear force -- Si coarsening of hypereutetic alloy in the semi-solid state -- The Factsage software -- Measurement of the reological characteristics -- Mettalography of A390 -- Thermodynamic evaluation -- As cast microstructure of A390 -- The rheological behaviour of A390