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Dynamic softening of ferrite during large strain warm deformation of a plain-carbon steel

Eghbali, B, Abdollah-Zadeh, A. and Hodgson, Peter 2007, Dynamic softening of ferrite during large strain warm deformation of a plain-carbon steel, Materials science and engineering A: structural materials: properties, microstructures and processing, vol. 462, no. 1-2, pp. 259-263, doi: 10.1016/j.msea.2006.04.154.

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Title Dynamic softening of ferrite during large strain warm deformation of a plain-carbon steel
Author(s) Eghbali, B
Abdollah-Zadeh, A.
Hodgson, Peter
Journal name Materials science and engineering A: structural materials: properties, microstructures and processing
Volume number 462
Issue number 1-2
Start page 259
End page 263
Publisher Elsevier
Place of publication Lausanne, Switzerland
Publication date 2007-07-25
ISSN 0921-5093
1873-4936
Keyword(s) warm deformation
dynamic softening
ferrite
continuous dynamic recrystallization
C-Mn steel
Summary The evolution of dynamic ferrite softening in a plain-carbon steel was investigated by torsion tests during warm deformation at 810 °C, in the two-phase (ferrite + austenite) region, and strain rate of 0.1 s−1 with different strains up to 50. The warm flow behaviour and ferrite microstructural parameters, such as grain size, misorientation angle across ferrite/ferrite boundaries, and the fraction of high-angle and low-angle grain/subgrain boundaries were quantified using electron back scatter diffraction. The results show that with increasing strain up to not, vert, similar2, the ferrite grain size and fraction of high-angle boundaries rapidly decrease and the fraction of low-angle boundaries increases. However, these parameters remain approximately unchanged with increasing strain from not, vert, similar2 to 50. The dynamic softening mechanism observed during large strain ferritic deformation is explained by dynamic recovery and continuous dynamic recrystallization.
Language eng
DOI 10.1016/j.msea.2006.04.154
Field of Research 091207 Metals and Alloy Materials
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007203

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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