Study on Apparent Viscosity of Semi-Solid Alloys during Rheocasting
An analytical model of apparent viscosity was built up based on analysis of energy dissipation during rheocasting. By study the evaluation law of microstructure analyzed with a quantitative metallographic analysis system for semi-solid alloys, the variation law of apparent viscosity with time has been obtained. The model was verified in the experiment of A356 alloys with a coaxial double-bucket rheometer, and the results of simulated experiment and theoretical calculation are in a good agreement.
G. Hirt, A. Rassili, A. Bührig-Polaczek
W. Liu et al., "Study on Apparent Viscosity of Semi-Solid Alloys during Rheocasting", Solid State Phenomena, Vols. 141-143, pp. 665-670, 2008