Assessment of niobium segregation energy in migrating ferrite/austenite phase interfaces
2010 (English)In: INT J MATER RES, ISSN 1862-5282, Vol. 101, no 10, 1232-1240 p.Article in journal (Refereed) Published
The effects of physical parameters on the total dissipation of Gibbs energy inside migrating ferrite/austenite interfaces have been re-investigated using Odqvist's solute drag model. It is shown that the mobility of the ferrite/austenite phase interface and the diffusivity of niobium in the interface have a strong effect on the Gibbs energy dissipation. As the phase interface mobility was recently reassessed, it is clear that the Gibbs energy of niobium segregation and the diffusivity of niobium in the interface must also be reassessed. In this paper both parameters are reassessed in the Fe-C-Nb system using new physical parameters and experimental results from ultra-low carbon steels.
Place, publisher, year, edition, pages
2010. Vol. 101, no 10, 1232-1240 p.
Thermodynamics, Transformation, Diffusion, Solute drag, Segregation
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-26231DOI: 10.3139/146.110413ISI: 000283516400006ScopusID: 2-s2.0-78649346211OAI: oai:DiVA.org:kth-26231DiVA: diva2:399372
QC 201102222011-02-222010-11-212011-02-22Bibliographically approved