Modelling of Microporosity, Macroporosity, and Pipe-Shrinkage Formation during the Solidification of Alloys Using a Mushy-Zone Refinement Method : Applications to Aluminium Alloys

A microporosity model, based on the solution of Darcy’s equation and microsegregation of gas, has been developed for arbitrary two- (2-D) and three-dimensional (3-D) geometry and coupled for the first time with macroporosity and pipe-shrinkage predictions.