The Study on the Nucleation Behaviours in IF Steel by 3-D EBSD Tomography

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Abstract:

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.

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Materials Science Forum (Volumes 654-656)

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2334-2337

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June 2010

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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