Recrystallization texture of ferrite steels: beyond the gamma-fibre
17 Dec 2011
Carla Barbatti, Jaap Moerman; Tata Steel RD&T, IJmuiden, The NetherlandsP. Gobernado; Materials Innovation Institute, M2i, Delft, The Netherlands
L.A.I. Kestens; Delft University of Technology, The Netherlands
R.H. Petrov; Ghent University, Belgium
The recrystallization texture of highly cold deformed IF steels is addressed. The latter is characterized by the <111>//ND fibre and a certain spread towards the {311}<136> orientation. The <111>//ND fibre is the optimum texture for enhanced deep-drawing properties whereas the presence of any other component, such as {311}<136>, will deteriorate the plastic anisotropy of the material. Previous works concluded that the recrystallized {311}<136> orientation results from an oriented nucleation process related to the plastic instability of {001}<110> deformed grains. In the present work, the microstructural nature of such plastic instability is investigated by high resolution orientation scanning microscopy on an annealed IF sample after cross-rolling. Present data indicate that localized deformation in near {001}<110> grains plays an essential role in the nucleation of {311}<136> orientations.
Paper presented at ICOTOM 16, Mumbai, India, December 12-17, 2011
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