| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
New Frontiers in Physical Metallurgy of Steels
|
| Presentation Title |
Austenite Decomposition during Hot-strip Rolling of Microalloyed Low-carbon Steel |
| Author(s) |
Wing Shan Tam, Matthias Militzer |
| On-Site Speaker (Planned) |
Wing Shan Tam |
| Abstract Scope |
To achieve the desired hot band microstructures and required mechanical properties during hot-strip rolling, precise control of the cooling path through the runout table is critical. In this study, the austenite decomposition kinetics during continuous cooling of two microalloyed low-carbon steels have been investigated. Austenite grain growth, deformation and austenite decomposition tests were performed using a Gleeble 3500 thermomechanical simulator. The influence of processing parameters including austenite grain size, cooling rate and retained strain on transformation kinetics and the transformation products under no-recrystallized rolling conditions were evaluated through dilatometry, microstructure characterization and hardness testing. A microstructure model describing these metallurgical phenomena has been proposed that is applicable to industrially relevant runout table cooling strategies. |