|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||High Performance Steels
||Intercritical annealing of DP steels investigated by in situ High Energy X-Ray Diffraction experiments
||Clelia Couchet, Kuan Hong Cheong, Sébastien Allain, Julien Teixeira, Guillaume Geandier, Frédéric Bonnet
|On-Site Speaker (Planned)
Austenite formation kinetics during intercritical annealing of various steels dedicated to the manufacturing of DP600/780 steels have been investigated in situ thanks to High Energy X-Ray Diffraction experiments. These experiments have been carried out on P07 beamline in PETRA III at DESY (Hamburg) with a monochromatic beam (100 keV). High flux from synchrotron source and fast high-throughput 2D detector (Perkin-Elmer) collects Debye-Scherrer (DS) diffraction patterns at significant rate (10hz). The effect of carbon content, niobium micro-alloying and cold-rolling ratio were studied along intercritical annealing between 780°C and 800°C using three heating rates (3°C/s, 30°C/s and 100°C/s). This work aims to provide better understanding for austenite morphogenesis during intercritical annealing and its interactions with recovery and recrystallization, which influence in turn the final mechanical properties of steels.
||Phase Transformations, Characterization,