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EBSD investigation of the effect of strain path changes on the microstructure and texture of duplex stainless steel during hot deformation

Cizek, Pavel, Wynne, BP and Rainforth, WM 2006, EBSD investigation of the effect of strain path changes on the microstructure and texture of duplex stainless steel during hot deformation, in Journal of Physics: Conference Series, IOP Publishing, Bristol, Eng., pp. 331-334, doi: 10.1088/1742-6596/26/1/080.

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Title EBSD investigation of the effect of strain path changes on the microstructure and texture of duplex stainless steel during hot deformation
Author(s) Cizek, Pavel
Wynne, BP
Rainforth, WM
Conference name EMAG–NANO 05: Imaging, Analysis and Fabrication on the Nanoscale
Conference location Leeds, Eng.
Conference dates 2205/08/31 - 2005/09/02
Title of proceedings Journal of Physics: Conference Series
Publication date 2006
Start page 331
End page 334
Total pages 4
Publisher IOP Publishing
Place of publication Bristol, Eng.
Summary The effect of strain path changes on the microstructure/crystallographic texture characteristics was studied in a 22Cr-6Ni-3Mo duplex stainless steel subjected to several deformation regimes comprising forward and reverse torsion, performed at a temperature of 1000 °C using a strain rate of 1 s-1. A high-resolution EBSD technique, utilising an FEI Sirion FEG SEM in conjunction with a HKL Technology EBSD attachment, was successfully implemented for precise phase and substructural characterisation of the above steel. The austenite/ferrite ratio as well as the crystallographic texture, subgrain size and misorientation angles corresponding to each phase were determined over large sample areas. The results indicated that the austenite and ferrite phases, present in approximately equal volume fractions, softened via dynamic recovery and extended dynamic recovery, respectively. The phase ratio appeared to remain stable during straining. There seemed to be generally more strain partitioned to the ferrite compared to the austenite. Twin relationships in the austenite appeared partly restored after the full strain reversal. The austenite crystallographic texture displayed a tendency to revert back to the original texture after the strain reversal whereas the ferrite texture evolution appeared more complex. The obtained subgrain characteristics indicated that the reversed torsion might have caused some dissolution (and possible re-formation) of subboundaries in both phases. Nevertheless, the effect of strain path changes on the substructure characteristics generally appeared relatively moderate. © 2006 IOP Publishing Ltd.
ISSN 1742-6588
1742-6596
DOI 10.1088/1742-6596/26/1/080
Field of Research 02 Physical Sciences
09 Engineering
HERDC Research category EN.1 Other conference paper
Copyright notice ©2006, IOP Publishing
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30098380

Document type: Conference Paper
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.