Bainite formation kinetics in steels and the dynamic nature of the autocatalytic nucleation process

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Abstract

Over the years, a quantitative theory to explain bainite formation kinetics has been proposed based on the nucleation kinetics of bainitic sub-units. Although the theory shows acceptable correlation with experimental results, it is observed that the kinetic models show a certain degree of discrepancy with actual kinetics. It is identified that these mainly arise due to the inadequate estimation of autocatalytic nucleation, especially as a function of progress of bainite formation. With the help of this observation, the kinetic model is modified and a better insight into the process of autocatalytic nucleation, essential in bainite formation, is obtained.

Original languageEnglish
Pages (from-to)82-86
JournalScripta Materialia
Volume140
DOIs
Publication statusPublished - 2017

Keywords

  • Bainite
  • Isothermal heat treatments
  • Kinetics
  • Nucleation

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