The influence of shearing conditions on the rheology of semi-solid magnesium alloy

Rheological Characterization of Semi-Solid Metals: A Review

“…Therefore, the coarsening of particles takes place earlier for the alloy with grain refiner in comparison with the base alloy, as visible in Figure 15. The same mechanism is illustrated also by Chen et al [102], who provided the following schematic diagram ( Figure 16) and correlated the evolution of the particle size to the apparent viscosity for a Mg alloy.…”

“…For sufficient large shear rates, the temporal change of the diameter is linear with time. The effect of isothermal and non-isothermal stirring on particle size was also evaluated for Al-Si alloys [98][99][100][101] and Mg alloys [102]. Sukumaran et al [99] investigated the evolution of particle diameter with shearing time for an Al-Si alloy with and without the addition of grain refiner (Figure 15).…”

“…Schematic diagram of the variation of microstructure for: (a) decreasing apparent viscosity and (b) increasing apparent viscosity[102].…”

Measurement and Characterization of the Apparent Viscosity of Fe–C Melts during Solidification

“…[2][3][4][5] However, the data on the apparent viscosity of Fe-C melts during solidification is extremely limited due to the experimental difficulties such as the poor availability of rheological instruments for use at high temperatures and a measurement spindle that does not react with the molten Fe-C alloy. Shibutani et al 6) measured the apparent viscosity of Fe-C (3 and 4%C) and Fe-Cr-Ni-C alloys in state where liquid and solid phases coexisted using rotating coaxial…”

“…Here, the exponential relationship between P and f scr and the solidification rate and shear rate are shown in Eqs. (4) and (5). In these equations, the Fe-2.4%C melt was used as an example.…”