| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Computational Thermodynamics and Kinetics
|
| Presentation Title |
O-3: Atomistic Modeling of Austenite-ferrite Transformation Interface |
| Author(s) |
Olha Nakonechna, Helena Zapolsky, Frederic Danoix, Mohamed Gouné, Didier Huin, Nicolas Charbonnier |
| On-Site Speaker (Planned) |
Olha Nakonechna |
| Abstract Scope |
The austenite to ferrite phase transformation plays a key role in the processing of a modern steels. One of the crucial parameters that control the final microstructure of steels is the mobility of austenite/ferrite transformation interface. It’s well established that its mobility depends on a complex interaction of the alloying elements with a moving interface.
In this paper, using atomistic modeling based on the quasiparticle approach, we investigate the energetics and dynamics of the phase transformation in an Fe bicrystal containing a bcc/fcc interface. Three interfaces, close to the Bain, Pitch and Kurdjumov-Sachs orientation relations (OR), have been examined. It is shown that the OR between the fcc and bcc phase may affect the mechanism of nucleation and growth of the newly formed bcc phase. The influence of C segregation on the interface mobility is also under discussion. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |