About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging for Materials Science and Processing
|
| Presentation Title |
In-situ Observation of Austenite Grain Growth under Isothermal Annealing in Model Alloys via HT-LSCM |
| Author(s) |
Maximilian Kern, Christian Bernhard, Michael Bernhard |
| On-Site Speaker (Planned) |
Maximilian Kern |
| Abstract Scope |
Austenite grain growth plays a critical role in steel manufacturing, especially in continuous casting, where surface grain size influences slab quality. Coarse grains can promote defects such as star, network, or transverse cracks. Therefore, controlling grain size through mechanisms like solute drag and particle pinning is essential. In this study, austenite grain growth was investigated under isothermal annealing at 1050–1350 °C using high-temperature laser scanning confocal microscopy (HT-LSCM) for in-situ observations. Alloys ranged from binary Fe-P to quaternary Fe-C-Nb-N alloys. Time-resolved micrographs were quantified using the linear intercept method (ASTM E112), enabling precise tracking of grain growth kinetics. The results yielded grain growth functions dependent on time, temperature, and alloy chemistry. These insights help elucidate the roles of solute drag and precipitation pinning in grain refining, contributing to a better understanding of microstructural evolution during thermal processing in steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Modeling and Simulation, Iron and Steel |