Ausforming on nano-bainite steel studied by in situ neutron diffraction

その場中性子回折によるナノベイナイト鋼のオースフォーミング挙動

Gong, W.; 友田 陽; Harjo, S.   ; Kelleher, J.*; Paradowska, A.*

Gong, W.; Tomota, Yo; Harjo, S.; Kelleher, J.*; Paradowska, A.*

"Nanobainites" with the microstructure consisting of nano-sized lamellar bainitic ferrite and carbon-enriched retained austenite, exhibited a very strong tensile strength of 2 GPa and elongation of 5 %. Although the transformation speed is extremely low in general, we have previously found that it can be accelerated by ausforming. In the present work, in situ TOF neutron diffraction experiment was employed to investigate the kinetic of bainite transformation with and without ausforming, where the bulky averaged microscopic data were evaluated.