| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification Science VIII
|
| Presentation Title |
Grain Selection after a Massive-like Transformation from Ferrite to Austenite during Solidification in Fe-based Alloys |
| Author(s) |
Hideyuki Yasuda, Taka Narumi, Takeru Suga, Yukihiko Nanri |
| On-Site Speaker (Planned) |
Hideyuki Yasuda |
| Abstract Scope |
The observations using time-resolved X-ray imaging techniques (transmission imaging and tomography) indicate that the peritectic reaction, which is controlled by solute diffusion, does not occur and a massive-like transformation from ferrite to austenite, which produces fine austenite grains, is dominantly selected even in the unidirectional solidification in Fe-C alloys. The volume change owing to the massive-like transformation and the coarsening of the fine austenite grains can influence solidification defects, such as deformation of solidifying shell and cracks. Time-resolved tomography (4D-CT) was used to measure the volume change and to measure the crystallographic orientations before and after the massive-like transformation. The crystallographic orientations of austenite widely distributed immediately after the massive-like transformation, but some relationships in the crystallographic orientation between austenite grains were also observed. This paper will discuss the influence of the massive-like transformation following the solidification on the microstructure evolution in Fe-C alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Iron and Steel, Modeling and Simulation |