Characterization of dislocation loops and chromium-rich precipitates in ferritic iron-chromium alloys as means of void swelling suppression
2007 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 362, no 2-3, 167-173 p.Article in journal (Refereed) Published
We have used both ab initio and empirical potential based molecular dynamics and static calculations to parameterize a model accounting for the mobility of self-interstitial clusters and small dislocation loops in Fe-Cr alloys depending on Cr content. Particularly, we have considered the interval of 5-15% of Cr, corresponding to the typical concentration of Cr in ferritic/martensitic steels. The mobility of self-interstitial clusters and small dislocation loops was found to be strongly reduced in the presence of Cr due to attractive interaction between self-interstitials and Cr atoms, whereas Cr-rich precipitates act as repulsive obstacles. The results obtained allow the experimental trend of swelling measurements in neutron and high-energy electron irradiated Fe-Cr alloys to be interpreted and explained.
Place, publisher, year, edition, pages
2007. Vol. 362, no 2-3, 167-173 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-62849DOI: 10.1016/j.jnucmat.2007.01.069ISI: 000246895400006OAI: oai:DiVA.org:kth-62849DiVA: diva2:481216
QC 20120124. Symposium on Nuclear Materials and Materials for Fusion held at the E-MRS 2006 Spring Meeting, Nice, FRANCE, MAY 29-JUN 02, 20062012-01-202012-01-202012-01-24Bibliographically approved