The Study on the Nucleation Behaviours in IF Steel by 3-D EBSD Tomography
3-D FIB-EBSD tomography was used to analyze the structure and crystallography of nuclei, and nucleation process in 3-D space during annealing a cold rolled IF steel. It is revealed that the structure of nucleus at its very initial formation stage can be divided into two parts: (1) nucleation core, having a dislocation-contained subgrain structure, mainly bounded by low angle grain boundary with surrounding deformation subgrain, (2) newly-grown region, having a dislocation free structure, formed from high store energy deformation structures surrounding nucleus, and mainly bounded by high angle grain boundary.
Jian-Feng Nie and Allan Morton
W. Q. Xu and M. Ferry, "The Study on the Nucleation Behaviours in IF Steel by 3-D EBSD Tomography", Materials Science Forum, Vols. 654-656, pp. 2334-2337, 2010