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Titolo:
DISPLACEMENT CASCADES IN METALS AND ORDERED ALLOYS - MOLECULAR-DYNAMICS SIMULATIONS
Autore:
DOAN NV; VASCON R;
Indirizzi:
CENS,CEREM,DECM,SRMP F-91191 GIF SUR YVETTE FRANCE
Titolo Testata:
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms
fascicolo: 1-4, volume: 135, anno: 1998,
pagine: 207 - 213
SICI:
0168-583X(1998)135:1-4<207:DCIMAO>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERMETALLIC COMPOUNDS; COMPUTER-SIMULATION; SYSTEMS;
Keywords:
COMPUTER SIMULATION; MOLECULAR DYNAMICS; DISPLACEMENT CASCADES; ORDERED INTERMETALLIC ALLOYS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
N.V. Doan e R. Vascon, "DISPLACEMENT CASCADES IN METALS AND ORDERED ALLOYS - MOLECULAR-DYNAMICS SIMULATIONS", Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 135(1-4), 1998, pp. 207-213

Abstract

The aim of the present Molecular Dynamics (MD) simulations is a better understanding of the mechanisms associated with defect production and atomic mixing occurring in displacement cascades in irradiated metals and alloys. The cascades of energy up to 30 keV were investigated byparallel MD simulations in crystals with a reasonably large size of the simulation box, containing up to 2 millions of atoms. In order to separate the effect of the mass of atoms from the chemical effect on the defect production and the disordering in alloys, cascades were generated in Ni3Al and NiAl compounds where the Al atoms were artificially given the Ni mass. A series of artificial alloys FeAl, FeSb, FeAu, FeUwere also investigated. Large interstitial clusters were found to be very mobile and a glide mechanism was pointed out. A sub-cascade formation mechanism was observed from cascades of energy equal to or higherthan 5 keV and related to the quasi-channeling phenomenon. (C) 1998 Elsevier Science B.V.

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Documento generato il 02/06/20 alle ore 01:47:46