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Microstructural characterization of the austenite behaviour during metadynamic recrystallization

Beladi, H., Cizek, P. and Hodgson, P. D. 2011, Microstructural characterization of the austenite behaviour during metadynamic recrystallization, in ATCOM 2011 : Proceedings of the International Conference on Advances in Analytical Techniques and Characterization of Materials, [ATCOM], [Ranchi, India].

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Title Microstructural characterization of the austenite behaviour during metadynamic recrystallization
Author(s) Beladi, H.
Cizek, P.
Hodgson, P. D.
Conference name ATCOM : International Conference on Advances in Analytical Techniques and Characterization of Materials (2011 : Ranchi, India)
Conference location Ranchi, India
Conference dates 5-7 Jul. 2011
Title of proceedings ATCOM 2011 : Proceedings of the International Conference on Advances in Analytical Techniques and Characterization of Materials
Editor(s) [Unknown]
Publication date 2011
Conference series ATCOM : International Conference on Advances in Analytical Techniques and Characterization of Materials
Publisher [ATCOM]
Place of publication [Ranchi, India]
Keyword(s) austenite
hot deformation
MDRX
texture
dislocation substructure
Summary The work discusses the recent findings obtained from the microstructural characterization of an austenitic Ni-30%Fe model alloy during metadynamic recrystallization (MDRX) using both EBSD and TEM techniques. The characterization of the grain structure, texture and dislocation substructure evolution of the fully dynamically recrystallized (DRX) microstructure during post deformation annealing revealed a novel softening mechanism occurring under the current experimental conditions. It is proposed that the initial softening stage involves rapid growth of the dynamically formed nuclei and migration of the mobile boundaries in correspondence with the well-established MDRX mechanism. However, the sub-boundaries within DRX grains progressively disintegrate through dislocation climb and dislocation annihilation, which ultimately leads to the formation of dislocation-free grains. Consequently, the DRX texture largely remains preserved throughout the annealing process.
Language eng
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 861103 Basic Iron and Steel Products
HERDC Research category E2 Full written paper - non-refereed / Abstract reviewed
Copyright notice ©2011, ATCOM
Persistent URL http://hdl.handle.net/10536/DRO/DU:30042256

Document type: Conference Paper
Collections: Centre for Material and Fibre Innovation
Institute for Frontier Materials
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