| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Divergent Pearlite Growth in Fe-Mn-C Steel |
| Author(s) |
Leslie T. Mushongera, P.G. Gideon Kubendran, Britta Nestler |
| On-Site Speaker (Planned) |
Leslie T. Mushongera |
| Abstract Scope |
A literature review on the mechanisms of eutectoid transformation in ternary steels reveals that the subject remains fascinating, with many unresolved issues and disparate observations. Cooperative growth of pearlitic lamellae and the factors that engender transition to divergent eutectoid are the areas where stipulated bridging between theory and experiments is yet to be established. We use a grand-chemical potential model that uses thermodynamic information from the CALPHAD database to explore the conditions that stimulate fascinating morphological transitions as the eutectoid transformation proceeds in Fe-Mn-C steel. To begin with, the numerically simulated growth kinetics are compared to DICTRA sharp-interface calculations, in the parameter space of interest. The validated model is used to investigate the influence of different processing and boundary conditions on the microstructural evolution. Meaningful insights on the mechanisms of eutectoid transformation are derived based on synergies established between computational and experimental micrographs. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |