Lamellar spacing selection in regular eutectic solidification at low velocity

Guanghui Meng, Xin Lin, Weidong Huang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Based on the Jackson and Hunt's analysis, the selection of lamellar spacing in regular eutectics was reexamined at low velocity. The isothermal assumption was released and the effective interface undercooling was determined by the weighted average of the eutectic phases. It is found that the lamellar spacing minimized the effective interface undercooling depends only on the intrinsic characteristics of a given system at a fixed velocity. In addition, the selection of lamellar spacing is related to the relationship between the average interfacial undercoolings of the eutectic phases and the lamellar spacing. The selected lamellar spacing obviously deviated from that predicted by the Jackson and Hunt's analysis if the variation of the average interfacial undercoolings of the solid phases with the lamellar spacing was markedly different at a constant growth rate.

Original languageEnglish
Pages (from-to)851-854
Number of pages4
JournalJournal of Materials Science and Technology
Volume23
Issue number6
StatePublished - Nov 2007

Keywords

  • Eutectic
  • Lamellar spacing
  • Solidification
  • Undercooling

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