|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced Thermo-mechanical Characterization of Materials with Special Emphasis on In Situ Techniques
||In-situ Neutron Diffraction Analysis for Dynamic Ferrite Transformation Behavior in Low-carbon Steels
||Akinobu Shibata, Yasunari Takeda, Wu Gong, Stefanus Harjo, Takuro Kawasaki, Nobuhiro Tsuji
|On-Site Speaker (Planned)
A thermomechanical processing, i.e., precisely controlled deformation and heat treatment, has been practically used to make large steel products. Nowadays, the process utilizing dynamic ferrite transformation, which occurs during plastic deformation of austenite, has been received much attention as a new thermomechanical processing because ultrafine-grained ferrite structures can be easily achieved through dynamic ferrite transformation. In order to reveal dynamic ferrite transformation mechanism and establish the new type of thermomechanical processing based on theoretical aspects, we have developed a thermomechanical processing simulator for in-situ neutron diffraction analysis at elevated temperature. In this presentation, we report dynamic ferrite transformation behavior in low-carbon steels analyzed by the in-situ neutron diffraction technique. We found that dynamic ferrite transformation surely occurred during deformation of austenite and the lattice constant of dynamically transformed ferrite decreased with the progress of transformation. The results suggest that partitioning behavior of alloying elements changed during dynamic transformation.
||Planned: Supplemental Proceedings volume