Title :

Modelling the primary damage in Fe and W: Influence of the short range interactions on the cascade properties: Part 1 – Energy transfer

Author(s) :

Becquart, Charlotte [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
De Backer, Andrée [Auteur]
Culham Centre for Fusion Energy [CCFE]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Olsson, Pär [Auteur]
KTH Royal Institute of Technology [Stockholm] [KTH]
Domain, Christophe [Auteur]
Matériaux et Mécanique des Composants [EDF R&D MMC]

Journal title :

Journal of Nuclear Materials

Pages :

152816

Publisher :

Elsevier BV

Publication date :

2021-04-15

ISSN :

0022-3115

English keyword(s) :

Radiation damage
Primary damage
Displacement cascades
Primary knock on atom
Metallic alloys
Empirical potentials
Threshold displacement energies

HAL domain(s) :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

The primary damage in metallic alloys, i.e. the point defect distribution resulting from the interaction between an energetic particle and a metallic matrix has been investigated for more than 60 years using atomistic ...
Show more >The primary damage in metallic alloys, i.e. the point defect distribution resulting from the interaction between an energetic particle and a metallic matrix has been investigated for more than 60 years using atomistic simulations. The defect distribution produced in cascades is sensitive to the equilibrium part of the potential as well as its hardened part. An analysis based on large statistics of molecular dynamics simulations and comparison with different embedded atom method potentials in Fe and W allows to rationalize the potential behavior. Correlations between static non-equilibrium properties (quasi static drag (QSD)), threshold displacement energies (TDE), replacement collision sequences (RCS) along the 〈110〉 direction have been revealed. Along this direction, the lower the TDE, the lower the QSD and the more energy is transmitted along the 〈110〉 direction during the RCS, i.e. the softest potentials are the ones for which the most energy is transmitted from the PKA to the first head-on atom in the direction of the RCS sequence.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2021-03-08T09:21:13Z
2021-03-08T10:15:38Z