Thermomechanical processing of Advanced Multiphase High Strength Steels often includes isothermal treatments around the martensite start temperature (Ms). Investigations show that the presence of martensite prior to these isothermal treatments accelerates the kinetics of the subsequent transformation. The aim of this study is to determine whether the presence of a small volume fraction of martensite affects the nucleation kinetics of the subsequent transformation, as well as to qualitatively and quantitatively determine this contribution. For this purpose, dilatometry experiments were performed at different temperatures above and below Ms in a lowcarbon high-silicon steel. The isothermal product formed both above and below Ms has been identified as bainitic ferrite. The transformation kinetics analysis demonstrated that the bainitic ferrite formation is much faster below Ms than above Ms, with a difference of two orders of magnitude.

Original languageEnglish
Title of host publicationPTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
EditorsL.-Q. Chen, M. Militzer, G. Botton et al
PublisherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Pages559-560
ISBN (Electronic)9780692437360
Publication statusPublished - 2015
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 - Whistler, Canada
Duration: 28 Jun 20153 Jul 2015

Conference

ConferenceInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
Abbreviated titlePTM 2015
CountryCanada
CityWhistler
Period28/06/153/07/15

    Research areas

  • Dilatometry, Isothermal treatments, Martensite, Transformation kinetics

ID: 9880566