Liquid and solid inclusions at advancing steel solidification fronts

Yan Wang, Martin Valdez, Seetharaman Sridhar

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


In this paper, the behavior of liquid and solid inclusions at advancing planar and cellular solid fronts during the solidification of steels was investigated through in situ visualization with a confocal scanning laser microscope. In the case of the liquid spherical Al2O3-CaO-MgO inclusions, theoretical prediction models agree with the experimental observations with respect to the critical front velocity required for engulfment. For the irregular solid Al2O3 inclusions, the prediction models underestimate the critical velocities. At very low growth velocities, the inclusions were found to slide along the front and get entrapped in the intercellular regions. Once entrapped, it was found that liquid inclusions appeared to be more readily engulfed at the intercellular regions than at the planar fronts. This was not observed for the large solid inclusion clusters.

Original languageEnglish (US)
Pages (from-to)12-20
Number of pages9
JournalZeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
Issue number1
StatePublished - Jan 2002
Externally publishedYes


  • Confocal scanning laser microscopy
  • Engulfment
  • Entrapment
  • Escape
  • Grain boundaries
  • Liquid and solid inclusions
  • Pushing
  • Solidification

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry


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