Interlamellar spacing and average interface undercooling of irregular eutectic in steady-state growth

Guang hui MENG, Xin LIN, Wei dong HUANG

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The average lamellar spacing and interface undercooling in steady-state irregular eutectic growth were estimated based on the Jackson and Hunt's analysis by relaxing the isothermal interface assumption. At low growth rates, the average lamellar spacing and average interface undercooling are dependent only on the characteristic thermo-physical properties of a binary eutectic system. For a general Al-Si eutectic, it is found that the eutectic characteristic length based on the present non-isothermal analysis is consistent with that obtained from isothermal analysis; however, the average interface undercooling is remarkably different between them, and such discrepancy in average interface undercooling increases with increasing of growth rate. The measured interface undercooling obtained from literature is reasonably interpreted by present non-isothermal analysis.

Original languageEnglish
Pages (from-to)405-409
Number of pages5
JournalTransactions of Nonferrous Metals Society of China (English Edition)
Volume18
Issue number2
DOIs
StatePublished - Apr 2008

Keywords

  • irregular eutectic
  • lamellar spacing
  • solidification
  • spacing selection

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