| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Computational Thermodynamics and Kinetics
|
| Presentation Title |
O-27: Role of Defects, Interfaces in FCC-BCC Massive Transformation in Iron Using Molecular Dynamics Simulation |
| Author(s) |
Pawan Kumar Tripathi, Somnath Bhowmick |
| On-Site Speaker (Planned) |
Pawan Kumar Tripathi |
| Abstract Scope |
Austenite(FCC) to ferrite(BCC) transformation in iron is of great significance as it plays an important role in determining the microstructure and subsequently material properties. In the present
work, the massive transformation from high temperature(FCC) phase to low temperature(BCC) phase is simulated using MD simulation. The simulations are performed by creating an FCC region, sandwiched between two BCC regions (interface formed according to Nishiyama-Wasserman
orientation relationship, with (110) of BCC oriented parallel to (111) of FCC) in temperature range of 1000 to 1200 K. Orientation between the FCC and BCC phase was changed via tilting [111] direction of the FCC with respect to the [110] of the BCC region and is found to play a major role in transformation kinetics. Mechanism responsible for the transformation from high temperature FCC phase to low temperature BCC phase in different orientations was explained. Effect of point defects on massive transformation was also analysed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |