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Title

Carbon supersaturation of ferrite in a nanocrystalline bainitic steel

AuthorsGarcía Caballero, Francisca CSIC ORCID ; Miller, M. K.; García Mateo, Carlos CSIC ORCID CVN
KeywordsSteels
Bainite
Three-dimensional atom probe (3DAP
Issue DateApr-2010
PublisherElsevier
CitationActa Materialia 58 : 2338–2343 (2010)
AbstractThe extremely slow transformation kinetics of a nanocrystalline bainitic steel allows the carbon content of the bainitic ferrite away from any carbon-enriched regions such as dislocations and boundaries to be determined by atom probe tomography as the bainite transformation progresses at 200 C. A high level of carbon, well above that expected from para-equilibrium with austenite, has been detected in solid solution in bainitic ferrite at the early stage of transformation. Results provide strong evidence that bainite transformation is essentially displacive in nature so that the newly formed bainitic ferrite retains much of the carbon content of the parent austenite. 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Publisher version (URL)http://dx.doi.org/10.1016/j.actamat.2009.12.020
URIhttp://hdl.handle.net/10261/34530 doi:10.1016/j.actamat.2009.12.020
DOI10.1016/j.actamat.2009.12.020
ISSN1359-6454
Appears in Collections:(CENIM) Artículos




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