Abstract
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 language | English |
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Title of host publication | PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 |
Editors | L.-Q. Chen, M. Militzer, G. Botton et al |
Publisher | International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 |
Pages | 559-560 |
ISBN (Electronic) | 9780692437360 |
Publication status | Published - 2015 |
Event | International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 - Whistler, Canada Duration: 28 Jun 2015 → 3 Jul 2015 |
Conference
Conference | International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 |
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Abbreviated title | PTM 2015 |
Country/Territory | Canada |
City | Whistler |
Period | 28/06/15 → 3/07/15 |
Keywords
- Dilatometry
- Isothermal treatments
- Martensite
- Transformation kinetics