Title :

Determination of activation parameters for dislocation formation from a surface in fcc metals by atomistic simulations

Author(s) :

Hirel, Pierre [Auteur]
Laboratoire de Physique des Matériaux [PhyMat]
Godet, Julien [Auteur]
Laboratoire de Physique des Matériaux [PhyMat]
Brochard, Sandrine [Auteur]
Laboratoire de Physique des Matériaux [PhyMat]
Pizzagalli, Laurent [Auteur]
Laboratoire de Physique des Matériaux [PhyMat]
Beauchamp, Pierre [Auteur]
Laboratoire de Physique des Matériaux [PhyMat]

Journal title :

Physical Review B

Abbreviated title :

Phys. Rev. B

Volume number :

78

Publisher :

American Physical Society (APS)

Publication date :

2008-08-12

HAL domain(s) :

Chimie/Matériaux

English abstract : [en]

Defects in free surfaces are expected to be seeds for the nucleation of dislocations, which is the likely way nanoscale materials suffer plastic deformation. The nucleation results in the competition between the image force ...
Show more >Defects in free surfaces are expected to be seeds for the nucleation of dislocations, which is the likely way nanoscale materials suffer plastic deformation. The nucleation results in the competition between the image force attracting the dislocation to the surface and the applied strain. In this work, two methods based on molecular dynamics simulations using an embedded atom method (EAM) potential are used to determine the activation energy and the critical radius for the formation of dislocations from a surface defect in a typical fcc metal.Show less >

Language :

Anglais

Audience :

Non spécifiée

Collections :

• Autres travaux scientifiques

Submission date :

2020-02-21T10:30:12Z
2020-02-21T11:26:02Z
2020-02-21T13:10:59Z