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Recrystallization in 304 austenitic stainless steel

Dehghan-Manshadi, A., Beladi, Hossein, Barnett, Matthew and Hodgson, Peter 2004, Recrystallization in 304 austenitic stainless steel, Materials science forum, vol. 467, no. 470, pp. 1163-1168.

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Title Recrystallization in 304 austenitic stainless steel
Author(s) Dehghan-Manshadi, A.
Beladi, Hossein
Barnett, Matthew
Hodgson, Peter
Journal name Materials science forum
Volume number 467
Issue number 470
Start page 1163
End page 1168
Publisher Trans Tech Publications
Place of publication Aedermannsdorf, Switzerland
Publication date 2004
ISSN 0255-5476
Keyword(s) dynamic recrystallization
hot Deformation
austenitic stainless steel,
nucleation mechanism
Summary A 304 austenitic stainless steel was deformed using hot torsion to study the evolution of dynamic recrystallization (DRX). The initial nucleation of dynamically recrystallization occurred by the bulging of pre-existing high angle grain boundaries at a strain much lower than the peak strain. At the
peak stress, only a low fraction of the prior grain boundaries were covered with new DRX grains. Beyond the peak stress, new DRX grains formed layers near the initial DRX and a necklace structure was developed. Several different mechanisms appeared to be operative in the formation of new high angle boundaries and grains. The recrystallization behaviour after deformation showed a classic transition from strain dependent to strain independent softening. This occurred at a strain beyond the
peak, where the fraction of dynamic recrystallization was only 50%.
Language eng
Field of Research 091207 Metals and Alloy Materials
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2004, Trans Tech Publications, Switzerland
Persistent URL http://hdl.handle.net/10536/DRO/DU:30002834

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Created: Mon, 07 Jul 2008, 08:35:46 EST