| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Use of Large Scale Facilities to Understand the Physical Metallurgy of Fe-based Alloys
|
| Presentation Title |
Carbide-free Bainite Transformations in Non-isothermal Conditions Investigated
by In-situ High-energy X-ray Diffraction Experiments |
| Author(s) |
Cecile Rampelberg, Guillaume Geandier, Julien Teixeira, Thomas Sourmail, Sébastien Allain |
| On-Site Speaker (Planned) |
Cecile Rampelberg |
| Abstract Scope |
Carbide-Free Bainite (CFB) transformation has been investigated in situ on three industrial grades by High Energy X-Ray Diffraction. These experiments has been realized on P07 beamline in PETRA III at DESY (Hamburg) with a monochromatic beam (100keV). High flux from synchrotron source and high-throughput 2D detector (Perkin-Elmer) allows the collection of Debye-Scherrer diffraction patterns at high rate (10 Hz). Three bainitizing thermal schedules have been studied : conventionnel isothermal holdings, continuous cooling (close to industrial condition after forging) and multi-step cooling sequences (successive isothermal steps with decreasing temperatures to approximate a continuous cooling and decompose transformation sequences). Coupled with direct post mortem microstructural observations and mechanical tests, these analysis provide a better understanding of phase transformation mechanisms and kinetics during CFB formation. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |