|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced Thermo-mechanical Characterization of Materials with Special Emphasis on In Situ Techniques
||Effect of Ausforming on Isothermal Transformation Below Ms in NiCrMoV Steel Studied by In-situ Neutron Diffraction
||Wu Gong, Stefanus Harjo, Akinobu Shibata, Takuro Kawasaki, Yo Tomota, Tomoya Shinozaki, Nobuhiro Tsuji
|On-Site Speaker (Planned)
Recently, the physical simulator for thermo-mechanically controlled processing (TMCP) has been installed at the engineering neutron diffractometer ‘TAKUMI’ in J-PARC, which makes it possible for in-situ neutron diffraction experiments during TMCP at elevated temperatures. Low-temperature bainite structure in steels exhibits excellent mechanical properties due to its refined microstructure. It has been recently confirmed that the bainitic transformation can occur even below the martensite start temperature (Ms). In the present study, we performed in-situ neutron diffraction experiments by the aforementioned simulator to elucidate the effect of ausforming on isothermal transformation below Ms in a NiCrMoV steel. The formation of bainite below Ms was confirmed. Ausforming suppressed the kinetics of martensitic transformation but showed a weak effect on the subsequent bainitic transformation. The amount of retained austenite at room temperature became larger as a result of ausforming.
||Planned: Supplemental Proceedings volume