The relationship between viscosity and refinement efficiency of pure aluminum by Al–Ti–B refiner

The relationship between viscosity and refinement efficiency of pure aluminum with the addition of Al–Ti–B master alloy was studied in this paper. The experimental results show that when the grain size of solidified sample is finer the viscosity of the melt is higher after the addition of different Al–Ti–B master alloys. This indicates that viscosity can be used to approximately estimate the refinement efficiency of Al–Ti–B refiners in production to a certain extent. The main reason was also discussed in this paper by using transmission electron microscopy (TEM) analysis and differential scanning calorimetry (DSC) experiment.