New insights into the dynamic and metadynamic recrystallization of austenite Hodgson, Peter D., Cizek, Pavel and Beladi, Hossein 2012, New insights into the dynamic and metadynamic recrystallization of austenite, Materials science forum, vol. 715-716, no. 2012, pp. 259-266, doi: 10.4028/www.scientific.net/MSF.715-716.259. Attached Files Name Description MIMEType Size Downloads Title New insights into the dynamic and metadynamic recrystallization of austenite Author(s) Hodgson, Peter D. orcid.org/0000-0002-6985-1319 Cizek, Pavel orcid.org/0000-0003-0707-5737 Beladi, Hossein orcid.org/0000-0003-0131-707X Journal name Materials science forum Volume number 715-716 Issue number 2012 Start page 259 End page 266 Total pages 8 Publisher Trans Tech Publications Place of publication Stafa-Zurich, Switzerland Publication date 2012 ISSN 0255-5476 Keyword(s) dynamic recrystallization metadynamic recrystallization dislocation substructure crystallographic texture Ni-30%Fe Austenitic alloy hot torsion Summary The present work provides a summary of the recent findings obtained from the experimental investigation of the grain structure, crystallographic texture and dislocation substructure evolution in an austenitic Ni-30%Fe model alloy during dynamic recrystallization (DRX) and post-dynamic annealing. It has been found that the DRX texture characteristics become increasingly dominated by the low Taylor factor grains during DRX development, which presumably results from the preferred nucleation and lower consumption rates of these grains. The substructure of DRX grains is “random” in character and displays complex, hierarchical subgrain/cell arrangements characterized by accumulation of misorientations across significant distances. The stored energy within DRX grains appears to be principally consistent with the corresponding Taylor factor values. The changes observed within the fully dynamically recrystallized microstructure during postdynamic annealing have provided a basis to suggest a novel mechanism of metadynamic softening for 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. The subboundaries within DRX grains progressively disintegrate through dislocation climb and dislocation annihilation, which ultimately leads to the formation of dislocation-free grains, and the grain boundary migration gradually becomes slower. As a result, the DRX texture largely remains preserved throughout the annealing process. Language eng DOI 10.4028/www.scientific.net/MSF.715-716.259 Field of Research 091207 Metals and Alloy Materials Socio Economic Objective 861103 Basic Iron and Steel Products HERDC Research category C1 Refereed article in a scholarly journal Copyright notice ©2012, Trans Tech Publications Persistent URL http://hdl.handle.net/10536/DRO/DU:30047080 Document type: Journal Article Collections: Centre for Material and Fibre Innovation Institute for Technology Research and Innovation GTP Research 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 Mon, 13 Aug 2012, 13:13:20 EST Mon, 10 Sep 2012, 12:38:49 EST Mon, 10 Sep 2012, 12:40:28 EST Mon, 11 Nov 2013, 09:12:40 EST Fri, 17 Oct 2014, 11:41:59 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 719 Abstract Views, 4 File Downloads  -  Detailed Statistics Created: Mon, 13 Aug 2012, 13:13:20 EST