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The Influence of Vanadium on Ferrite and Bainite Formation in a Medium Carbon Steel

AuthorsSourmail, Thomas; García Mateo, Carlos CSIC ORCID ; García Caballero, Francisca CSIC ORCID ; Cazottes, S.; Epicier, T.; Danoix, F.; Milbourn, D.
KeywordsInfluence transformation kinetics
Medium carbon forging steel
Vanadium additions
Issue Date2017
CitationMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 48 (9): 3985-3996 (2017)
AbstractThe influence of vanadium additions on transformation kinetics has been investigated in a medium carbon forging steel. Using dilatometry to track transformation during continuous cooling or isothermal transformation, the impact of vanadium on both ferrite-pearlite and bainite has been quantified. Transmission electron microscopy and atom probe tomography have been used to establish whether vanadium was present in solid solution, or as clusters and precipitates. The results show that vanadium in solid solution has a pronounced retarding influence on ferrite-pearlite formation and that, unlike in the case of niobium, this effect can be exploited even during relatively slow cooling. The influence on bainite transformation was found to depend on temperature; an explanation in terms of the effect of vanadium on heterogeneous nucleation is tentatively proposed.
Publisher version (URL)https://doi.org/10.1007/s11661-017-4188-5
Identifiersdoi: 10.1007/s11661-017-4188-5
issn: 1073-5623
Appears in Collections:(CENIM) Artículos
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