Atom probe tomography of nanostructured bainite
1,122 views · Published 5 December 2013 · 0:31 · Indexed 31 October 2026
Channel: bhadeshia123 · 2013 · Education
The movie shows the carbon atom distribution in austenite (lower region) and bainitic ferrite. Each dot represents a carbon atom and the image box is about 50 nm wide. In the latter case there are linear features that represent dislocations decorated with carbon in the form of Cottrell atmospheres, but notable is the excess carbon present in the bainitic ferrite in solid solution. This is the first evidence that carbon remains in solution in bainitic ferrite, a consequence of the displacive transformation mechanism. Movie courtesy of Francisca Caballero. For more details, see: Caballero, F. G., Miller, M. K., Garcia-Mateo, C., Cornide, J., & Santofimia, M. J. Scripta Materialia 67 (2012) 846--849 Caballero, F. G., Miller, M. K., Garcia-Mateo, C., & Cornide, J. Journal of Alloys and Compounds doi:10.1016/j.jallcom.2012.02.130 http://www.msm.cam.ac.uk/phase-trans/2005/bulk.html
