Two numerical microsegregation models are presented which can be used to check approximate microsegregation relationships used for large-scale solidification analysis. In the first, the solidification is controlled by a constant cooling rate, while a parabolic growth rate is assumed in the second. Both account for solute back-diffusion into the solid and coarsening of the arm space. Comparison with limiting analytical solutions and measurements indicate that both models function correctly and can provide accurate and practical results.
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.