Atomistic modelling of the Fe-Cr-C system
2011 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 415, no 3, 316-319 p.Article in journal (Refereed) Published
For the purpose of modelling the impact of carbon on radiation damage phenomena in steels, we have performed an extensive set of first principle calculations on the Fe-Cr-C system. The calculated solution and diffusion enthalpies of carbon in iron and in chromium agree well with experimental data, as do the relative formation energies of mono-carbides, cementite. Flagg and M(23)C(6) carbides. Our data further indicate that interstitial carbon is attracted to a solute iron atom in bcc chromium, while the reaction between carbon and a solute chromium atom in bcc iron is repulsive. An empirical potential fitted to data for iron carbides is capable of reproducing melting behaviour of cementite, while the predicted interaction with point defects agrees less well with DFT data than a potential recently published by Hepburn and Ackland.
Place, publisher, year, edition, pages
2011. Vol. 415, no 3, 316-319 p.
IdentifiersURN: urn:nbn:se:kth:diva-45291DOI: 10.1016/j.jnucmat.2011.04.034ISI: 000295442400014ScopusID: 2-s2.0-80052029975OAI: oai:DiVA.org:kth-45291DiVA: diva2:452233
QC 201110282011-10-282011-10-282011-10-28Bibliographically approved