Simulation of freckles during vertical solidification of binary alloys

S. D. Felicelli, J. C. Heinrich, D. R. Poirier

Research output: Contribution to journalArticle

166 Scopus citations

Abstract

A mathematical model of solidification that simulates the formation of channel segregates or freckles is presented. The model simulates the entire solidification process starting with the initial melt to the solidified cast, and the resulting segregation is predicted. Emphasis is given to the initial transient, when the dendritic zone begins to develop and the conditions for the possible nucleation of channels are established. The mechanisms that lead to the creation and eventual growth or termination of channels are explained in detail and illustrated by several numerical examples. Predictions of the pattern and location of channels in different cooling situations are in good agreement with experimental observations.

Original languageEnglish (US)
Pages (from-to)847-859
Number of pages13
JournalMetallurgical Transactions B
Volume22
Issue number6
DOIs
StatePublished - Dec 1 1991

ASJC Scopus subject areas

  • Engineering(all)

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