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Title

Atomic scale observations of bainite transformation in a high carbon high silicon steel

AuthorsGarcía Caballero, Francisca CSIC ORCID ; Miller, M. K.; Babu, S. S.; García Mateo, Carlos CSIC ORCID CVN
KeywordsBainite transformation
High silicon steel
Atom probe tomography
Issue DateJan-2007
PublisherElsevier
CitationActa Materialia 55 (1) 381–390 (2007)
AbstractA fine-scale bainitic microstructure with high strength and high toughness has been achieved by transforming austenite at 200 ºC. X-ray diffraction analysis showed the carbon concentration of these bainitic ferrite plates to be higher than expected from paraequilibrium. Atom probe tomography revealed that a substantial quantity of carbon was trapped at dislocations in the vicinity of the ferrite/austenite interface. These results suggest that the carbon trapping at dislocations prevents the decarburization of supersaturated bainitic ferrite and therefore alters the carbide precipitation sequence during low temperature bainite formation
Publisher version (URL)http://dx.doi.org/10.1016/j.actamat.2006.08.033
URIhttp://hdl.handle.net/10261/34321 doi:10.1016/j.actamat.2006.08.033
DOI10.1016/j.actamat.2006.08.033
ISSN1359-6454
Appears in Collections:(CENIM) Artículos

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