Further evidence of tetragonality in bainitic ferrite

C. N. Hulme-Smith, M. J. Peet, I. Lonardelli, A. C. Dippel and H.K.D.H. Bhadeshia

Materials Science and Technology, vol 31, issue 2 (January 2015) 254-256.

DOI: 10.1179/1743284714Y.0000000691


There is growing evidence that bainitic ferrite which retains a substantial amount of carbon in solid solution does not have cubic symmetry. We provide additional data on a different nanostructured bainitic steel to support this evidence, based on synchrotron X-ray diffraction experiments. The data are consistent only with a displacive transformation mechanism for bainite.


Keywords: tetragonal bainitic ferrite, nanostructured bainite, synchrotron, X-ray diffraction.