ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In extra-low carbon steels, the generation of specific nucleation sites in the deformedmicrostructure determines the formation of an optimum recrystallization texture. In particular,during the cold rolling of the steel sheets, transition bands are generated in order to accommodatethe different deformation paths followed by the deformation bands (DB-s) within the grains. [removed info]-fibregrains (ND-fibre grains) are, in general terms, more fragmented than [removed info]-fibre grains (RD-fibregrains). Consequently, the higher orientation gradients and stored energy levels of the [removed info]-fibre grainsdetermine the ND-fibre annealing texture. Nevertheless, during recrystallization of the ELC steel,nucleation in different type of transition bands (TB-s) between α-fibre components has also beenobserved in the present work. From a previous crystallographic classification of transition bandsdone by the authors, the effect of the lattice curvature, either by gradual or sharp orientationgradients, is studied during early recrystallisation stages.Specifically, the crystallographic characteristics of recrystallized nuclei formed at transition bandsgenerated between α-fibre components are analyzed using electron back-scatter diffraction (EBSD).This technique enables the orientation of deformation bands, the misorientation across them, theorientation of the new recrystallized grains and the misorientation of those grains with the adjacentmatrix grains to be determined. Recrystallization of components different to α at the expense of αcomponents has also been found
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.4173.pdf
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