Prediction of grain size, precipitation and crack susceptibility in continuous casting

Kun Xu, Brian Thomas

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

Abstract

The formation of precipitates, especially along austenite grain boundaries, greatly affects the formation of transverse cracks on the surface of continuous-cast steel. The steel composition and cooling history influences the formation of precipitates, and the higher temperature and corresponding larger grain growth rate under oscillation marks or surface depressions also have an important effect on crack problems. This paper develops a model to predict and track the amount, composition and size distribution of precipitates and the grain size in order to predict the susceptibility of different steel grades to ductility problems during continuous casting processes. The results are important for controlled cooling of microalloyed steels to prevent cracks and assure product quality.

Original languageEnglish (US)
Title of host publicationAISTech 2009 - Proceedings of the Iron and Steel Technology Conference
Pages641-652
Number of pages12
StatePublished - Oct 19 2009
EventIron and Steel Technology Conference, AISTech 2009 - St. Louis, MO, United States
Duration: May 4 2009May 7 2009

Publication series

NameAISTech - Iron and Steel Technology Conference Proceedings
Volume2
ISSN (Print)1551-6997

Other

OtherIron and Steel Technology Conference, AISTech 2009
CountryUnited States
CitySt. Louis, MO
Period5/4/095/7/09

Keywords

  • Boundary pinning force
  • Continuous casting
  • Equilibrium precipitation
  • Grain growth
  • Oscillation marks
  • Particle-size-grouping method
  • Precipitate formation

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering

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