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The influence of solute carbon in cold-rolled steels on shear band formation and recrystallization texture

Nave, Mark, Barnett, Matthew and Beladi, Hossein 2004, The influence of solute carbon in cold-rolled steels on shear band formation and recrystallization texture, ISIJ international, vol. 44, no. 6, pp. 1072-1078.

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Title The influence of solute carbon in cold-rolled steels on shear band formation and recrystallization texture
Author(s) Nave, Mark
Barnett, Matthew
Beladi, Hossein
Journal name ISIJ international
Volume number 44
Issue number 6
Start page 1072
End page 1078
Publisher Iron and Steel Institute of Japan
Place of publication Tokyo, Japan
Publication date 2004
ISSN 0915-1559
1347-5460
Keyword(s) steel
low-carbon (LC) steel
interstitial-free (IF) steel
cold-rolling
recrystallization
texture
shear bands
Goss
electron back-scatter diffraction (EBSD)
Summary Two experiments were conducted to clarify the roles of grain size, solute carbon and strain in determining the recrystallization textures of cold-rolled and annealed steels. In the first experiment, samples of coarse-grained low-carbon (LC) and interstitial-free (IF) steels were cold-rolled to a 75% reduction in thickness. One sample from each steel was polished and cold-rolled an additional 5%, while the remaining samples were annealed for various times at 650°C. In the second experiment, three samples from a commercial LC steel sheet were rolled 70% at 300°C. Two of the samples were given a further rolling reduction of 5% of the original thickness, with one of the samples being given this additional reduction at 300°C and the other at room temperature. Goss recrystallization textures are strengthened by coarse initial grain sizes, the presence of solute carbon and rolling at a temperature where dynamic strain ageing occurs, but are weakened by additional rolling beyond a reduction of 70%, especially when this extra rolling is conducted at a temperature where dynamic strain ageing does not occur. Characterization of key features of the deformed and recrystallized steels using optical microscopy, scanning electron microscopy (SEM) and electron back-scatter diffraction (EBSD) supports a rationale for these effects based on the repeated activation and deactivation of shear bands and the influence of solute carbon and dynamic strain ageing on the operating life of the bands and the accumulation of strain within them.
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 ©2004, Iron and Steel Institute of Japan
Persistent URL http://hdl.handle.net/10536/DRO/DU:30002415

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