Modelling of macrosegregation: applications and future needs

TLDR

Macrosegregation modelling has rapidly expanded since the 1960s, yet key research gaps remain. This paper reviews recent macrosegregation models, focusing on their application to industrially relevant casting processes. The review covers advanced macrosegregation models that integrate solidification microstructure and direct numerical simulations of microscopic phenomena. The review highlights both the successes and limitations of current models in predicting observed macrosegregation patterns.

Abstract

Modelling and simulation of macrosegregation has experienced explosive growth since the pioneering studies of Flemings and co-workers in the mid-1960s. This paper presents a review of recent macrosegregation models, with particular emphasis on their application to selected industrially relevant casting processes. The successes and shortfalls of the models in predicting measured macrosegregation patterns are noted. Although it is still early in their development, advanced macrosegregation models that include a detailed consideration of the solidification microstructure are also reviewed. Recent studies involving direct numerical simulation of macrosegregation related phenomena on a microscopic scale are highlighted. Important issues deserving future research attention are identified.