This article describes an experimental and mathematical modelling study of the effect of rotating magnetic fields during solidifcation on the resulting microstructure. Cylindrical castings of aluminum alloy A356 are made by vertical solidification from a chill block, under the influence of a coaxial rotating magnetic field. Measurements are made of the segregation profile and eutectic distribution in the casting. A mathematical model is introduced for tracking the macrosegregation in the casting. The relationship between local solid fraction and concentration evolves according to a predetermined relation, such as the lever rule or Scheil equation. The flow induced by the magnetic field redistributes solute by advecting the two-phase mixture. A numerical implementation of the model is described, and the results are compared with the experimental results.
No takes yet. Share an insight, caveat, or question.
Roplekar et al. (2001) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: