Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Study of loop-loop and loop-edge dislocation interactions in bcc iron
Autore:
Osetsky, YN; Bacon, DJ; Gao, F; Serra, A; Singh, BN;
Indirizzi:
Univ Liverpool, Dept Engn, Liverpool L69 3GH, Merseyside, England Univ Liverpool Liverpool Merseyside England L69 3GH , Merseyside, England Univ Politecn Catalunya, Dept Matemat Aplicada 3, E-08034 Barcelona, SpainUniv Politecn Catalunya Barcelona Spain E-08034 E-08034 Barcelona, Spain Riso Natl Lab, Dept Mat Res, DK-4000 Roskilde, Denmark Riso Natl Lab Roskilde Denmark DK-4000 at Res, DK-4000 Roskilde, Denmark
Titolo Testata:
JOURNAL OF NUCLEAR MATERIALS
, volume: 283, anno: 2000,
parte:, B
pagine: 784 - 788
SICI:
0022-3115(200012)283:<784:SOLALD>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
SELF-INTERSTITIAL CLUSTERS; CASCADE DAMAGE CONDITIONS; DISPLACEMENT CASCADES; COMPUTER-SIMULATION; MOLECULAR-DYNAMICS; PRODUCTION BIAS; FCC METALS; MICROSTRUCTURE; DEFECTS; VACANCY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Osetsky, YN Univ Liverpool, Dept Engn, Brownlow Hill, Liverpool L69 3GH, Merseyside, England Univ Liverpool Brownlow Hill Liverpool Merseyside England L69 3GH
Citazione:
Y.N. Osetsky et al., "Study of loop-loop and loop-edge dislocation interactions in bcc iron", J NUCL MAT, 283, 2000, pp. 784-788

Abstract

Recent theoretical calculations and atomistic computer simulations have shown that one-dimensional glissile clusters of self-interstitial atoms (SIAs) play an important role in the evolution of microstructure in metals and alloys under cascade damage conditions. Recently, it has been proposed that the evolution of heterogeneities such as dislocation decoration and rafts has serious impacts on the mechanical properties on neutron-irradiated metals. In the present work, atomic-scale computer modelling (ASCM) has been applied to study the mechanisms for the formation of such microstructure in bcc iron. It is shown that glissile clusters with parallel Burgers vectors interact strongly and can form extended immobile complexes, i.e., rafts. Similar attractive interaction exists between dislocation loops and an edge dislocation. These two mechanisms may be responsible for the formation of extended complexes of dislocation loops below the extra half-plane of edge dislocations. The interaction energies between loops and between an edge dislocation and loops has been calculated as a function of distance using ASCM and the results for long-range interactions are in good agreement with the results of isotropic elasticity calculations. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 03:15:53