The evolution of ultrafine ferrite formation through dynamic strain-induced transformation Beladi, Hossein, Kelly, Georgina, Shokouhi, A. and Hodgson, Peter 2004, The evolution of ultrafine ferrite formation through dynamic strain-induced transformation, Materials science & engineering. A., Structural materials : properties, microstructure and processing, vol. 371, no. 1, pp. 343-352, doi: 10.1016/j.msea.2003.12.024. Attached Files Name Description MIMEType Size Downloads Title The evolution of ultrafine ferrite formation through dynamic strain-induced transformation Author(s) Beladi, Hossein orcid.org/0000-0003-0131-707X Kelly, Georgina Shokouhi, A. Hodgson, Peter orcid.org/0000-0002-6985-1319 Journal name Materials science & engineering. A., Structural materials : properties, microstructure and processing Volume number 371 Issue number 1 Start page 343 End page 352 Publisher Elsevier Sequoia Place of publication Lausanne, Switzerland Publication date 2004-04 ISSN 0921-5093 1873-4936 Keyword(s) ultrafine ferrite dynamic strain-induced transformation austenite grain size coarsening hot torsion Summary Hot torsion testing of a C–Mn–V steel was used to study the evolution of  ultrafine ferrite (UFF) formation by dynamic strain-induced transformation (DSIT) in conjunction with air-cooling for two prior austenite grain sizes. This study evaluated not only the evolution of DSIT ferrite during straining, but also the grain growth behaviour of DSIT ferrite grains during post-deformation cooling. For both austenite grain sizes, the DSIT ferrite initially nucleated on/or near prior austenite grain boundaries at an early stage of transformation followed by the grain interiors. The prior austenite grain size affected the distribution of DSIT ferrite nucleation sites at an early stage of transformation and the subsequent coarsening behaviour of the grain boundary (GB) and the intragranular ferrite (IG) grains during post-deformation cooling. For the fine prior austenite grain size, the distribution of DSIT ferrite grains was more homogenous compared with the coarse austenite and the coarsening occurred not only in the GB ferrite grains but also in the IG ferrite grains. However, the ferrite coarsening mostly occurred for the IG ferrite rather than the GB ferrite grains in the coarse austenite. The result suggests that normal grain growth occurred during the overall transformation in the GB ferrite grains for the coarse initial austenite grain size. Notes Available online 21 March 2004. Language eng DOI 10.1016/j.msea.2003.12.024 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, Elsevier B.V. Persistent URL http://hdl.handle.net/10536/DRO/DU:30002831 Document type: Journal Article Collections: Faculty of Science, Engineering and Built Environment School of Engineering and Technology Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Fri, 10 Oct 2008, 12:38:08 EST Fri, 03 Apr 2009, 09:07:15 EST Fri, 08 Nov 2013, 11:46:50 EST Fri, 13 Jun 2014, 22:48:11 EST Fri, 17 Oct 2014, 08:18:23 EST Filtered Full Citation counts:   Cited 84 times in TR Web of Science Cited 99 times in Scopus Search Google Scholar Access Statistics: 1158 Abstract Views, 1 File Downloads  -  Detailed Statistics Created: Mon, 07 Jul 2008, 08:35:41 EST