| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Advancements in Steel Structural Refinement
|
| Presentation Title |
Microstructural characterization during the annealing process in vanadium micro-alloyed cold rolled steel |
| Author(s) |
Cheoljun Bae, Jongmyeong Kim, Jongryoul Kim |
| On-Site Speaker (Planned) |
Cheoljun Bae |
| Abstract Scope |
Developing high-strength cold rolled steel sheets is essential for industrial steel companies to fulfill increasing demands for automobile fuel efficiency and driver safety. In this regard, micro-alloyed cold rolled steels containing nanometer-sized precipitates have become an attractive candidate because it has balanced characteristics between cost-effective and superior flange formability compared to multi-phase steels such as dual-phase (DP) steels and complex-phase (CP) steels. However, the precipitation behavior and static recrystallization of micro-alloyed cold rolled steels during the continuous annealing process are relatively less understood as compared to that of austenite during the hot rolling process.
In this study, the precipitation kinetics of vanadium carbide and its interaction with the ferrite recrystallization and ferrite to austenite phase transformation during the continuous annealing process are investigated with variations in vanadium content. Furthermore, microstructural changes after the annealing process according to the different thermal cycles in the hot rolling process are also examined. |