Modeling microsegregatlon in metal alloys

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Direct simulations of solidification processes that account for all space and time scales are often beyond the reach of current computational power. To overcome this limitation micromacro approaches that incorporate the effects of small-scale phenomena into large-scale process models have been developed. An important small-scale solidification phenomenon is microsegregation -the redistribution of rejected solute components at the scale of the solid crystal morphology. This paper outlines a general microsegregation model that not only accounts for many of the critical small-scale phenomena in alloy solidification but also well suited as the micro component of a micro-macro model of metal casting. In the development of this microsegregation model, particular emphasis and testing is placed on alternative treatments of modeling the microscale solute diffusion in the solid phase - the so-called "back-diffusion.".

Original languageEnglish (US)
Title of host publicationSolidification and Gravity IV - Proceedings of the 4th International Conference on Solidification and Gravity
PublisherTrans Tech Publications Ltd
Pages349-360
Number of pages12
ISBN (Print)0878499911, 9780878499915
DOIs
StatePublished - Jan 1 2006
Event4th International Conference on Solidification and Gravity - Miskolc-Lillafuered, Hungary
Duration: Sep 6 2004Sep 9 2004

Publication series

NameMaterials Science Forum
Volume508
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other4th International Conference on Solidification and Gravity
CountryHungary
CityMiskolc-Lillafuered
Period9/6/049/9/04

Keywords

  • Back-diffusion
  • Metal solidification
  • Micro-macro model
  • Microsegregation

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