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

Ashwath M. Ravi*, Jilt Sietsma, Maria Santofimia Navarro

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    64 Citations (Scopus)
    115 Downloads (Pure)

    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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