Evolution of the Deformed Substructure Obtained by Cold-Rolling in IF Steel |
| Journal |
Materials Science Forum (Volume 550) |
| Volume |
Fundamentals of Deformation and Annealing |
| Edited by |
P. B. Prangnell and P. S. Bate |
| Pages |
205-210 |
| DOI |
10.4028/www.scientific.net/MSF.550.205 |
| Online since |
July, 2007 |
| Authors |
Aurelie Wauthier, Hélène Réglé, Rénald Brenner |
| Keywords |
Cold Rolling, Electron Backscatter Diffraction (EBSD), Microband, Texture |
| Abstract |
The aim of this study is to acquire more quantitative data on the cold-deformed state, in
order to determine the key parameters for nucleation (like orientation gradient, dislocation density,
degree of fragmentation…) and to correlate these to parameters which can be predicted by a mean
field deformation model.
Experimentally, a Ti-IF hot band has been deformed by cold rolling up to 51%. The deformed
microstructures are finely characterised using EBSD inside the SEM. It appears then that the
heterogeneity of deformation inside the grains begins very early. Some grains undergo
fragmentation whereas some others deform very homogeneously. Misorientation and degree of
fragmentation are found to be orientation and rolling level dependent. These deformation
parameters are plotted against the Taylor factor, calculated in each grain. |
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