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A DFT study of the stability of SIAs and small SIA clusters in the vicinity of solute atoms in Fe
KTH, School of Engineering Sciences (SCI), Physics, Reactor Physics.ORCID iD: 0000-0002-2381-3309
2018 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 500, p. 92-109Article in journal (Refereed) Published
Abstract [en]

The energetics, defect volume and magnetic properties of single SIAs and small SIA clusters up to size 6 have been calculated by DFT for different configurations like the parallel 〈110〉 dumbbell, the non parallel 〈110〉 dumbbell and the C15 structure. The most stable configurations of each type have been further analyzed to determine the influence on their stability of various solute atoms (Ti, V, Cr, Mn, Co, Ni, Cu, Mo, W, Pd, Al, Si, P), relevant for steels used under irradiation. The results show that the presence of solute atoms does not change the relative stability order among SIA clusters. The small SIA clusters investigated can bind to both undersized and oversized solutes. Several descriptors have been considered to derive interesting trends from results. It appears that the local atomic volume available for the solute is the main physical quantity governing the binding energy evolution, whatever the solute type (undersized or oversized) and the cluster configuration (size and type).

Place, publisher, year, edition, pages
Elsevier B.V. , 2018. Vol. 500, p. 92-109
Keywords [en]
Ab initio calculations, Fe alloys, Interstitial clusters, Interstitials, Radiation damage, Binding energy, Bins, Calculations, Iron alloys, Manganese, Palladium, Cluster configurations, Energy evolutions, Physical quantities, Relative stabilities, Stable Configuration, Atoms
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-223123DOI: 10.1016/j.jnucmat.2017.12.022ISI: 000425108100013Scopus ID: 2-s2.0-85039432847OAI: oai:DiVA.org:kth-223123DiVA, id: diva2:1193522
Note

Export Date: 13 February 2018; Article; CODEN: JNUMA; Correspondence Address: Becquart, C.S.; Univ.Lille, CNRS, INRA, ENSCL, UMR 8207, UMET, Unité Matériaux et TransformationsFrance; email: charlotte.becquart@univ-lille1.fr; Funding details: 2016153636, PRACE, Partnership for Advanced Computing in Europe AISBL. QC 20180327

Available from: 2018-03-27 Created: 2018-03-27 Last updated: 2018-03-27Bibliographically approved

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