Recrystallization textures in course grained low carbon and interstitial free steels

Nave, Mark and Barnett, Matthew 2002, Recrystallization textures in course grained low carbon and interstitial free steels, Materials science forum, vol. 408-412, pp. 907-912.

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Title Recrystallization textures in course grained low carbon and interstitial free steels
Author(s) Nave, Mark
Barnett, MatthewORCID iD for Barnett, Matthew
Journal name Materials science forum
Volume number 408-412
Start page 907
End page 912
Publisher Trans Tech Publications
Place of publication Aedermannsdorf, Switzerland
Publication date 2002
ISSN 0255-5476
Keyword(s) deformation
Summary The microstructures and textures of coarse grained cold rolled, partially recrystallized and fully recrystallized low carbon and interstitial free steel were examined by optical microscopy, scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). The recrystallization textures of the two grades are markedly different, with the low carbon steel having a predominantly Goss {11O}<OOl> texture and the interstitial free steel having a <1ll>/1ND texture with a strong {III }<112> component. One possible explanation for the texture difference is that less severe localization of flow during deformation of interstitial free steels causes less Goss nuclei to be generated. While some support for this view is provided by the results presented in this paper, the results suggest that another mechanism may be at least partially responsible. Examination of micro
shear bands on the surface of pre-polished samples showed that a higher proportion of micro shear bands remained active at high rolling reductions in the low carbon steel, compared with the interstitial free grade. Regions of Goss orientation within bands that have ceased to operate rotate to
near-{ III }<112> orientations with further deformation. Consequently, the recrystallization texture of coarse grained interstitial free steels can be rationalized by a reduction in the availability of Goss nuclei and an increase in the availability of {Ill }<112> nuclei due to a "Goss to {Ill }<112>" rotation within micro shear bands that have ceased to operate.
Language eng
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2002, Trans Tech Publications
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