About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Optimization of Cooling Practice to Increase the Strength of Hot Rolled S760MC High-Strength Steel |
| Author(s) |
Rekha M Y Rao, Brian K. Lin, Dmitri M Sidorenko, Ashwin Kannan Iyengar, Bertram Ehrhardt |
| On-Site Speaker (Planned) |
Rekha M Y Rao |
| Abstract Scope |
Microstructure characterization was performed on an industrially produced hot-rolled 6.35 mm S700MC steel with a minimum yield strength of 700 MPa. Electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) were employed to analyze grain size, dislocation density, and precipitation characteristics. The results demonstrated a strong correlation between the actual and theoretical yield strengths based on solid solution strengthening, grain size, dislocation density, and precipitation contributions. Utilizing the same steel chemistry, a new 6.35 mm S760MC steel was developed to achieve a minimum yield strength of 760 MPa. An industrial trial was performed with a new cooling strategy to optimize the grain size and enhance the mechanical properties to meet the 760 MPa requirement. Subsequent microstructure characterization was conducted on a trial coil to validate the theoretical yield strength prediction. This study demonstrates the effective design and processing optimization of high-strength hot-rolled steel through microstructural engineering and predictive modeling. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, Other |