Title :

Effects of temperature and surface step on the incipient plasticity in strained aluminium studied by atomistic simulations

Author(s) :

Hirel, Pierre [Auteur]
Laboratoire de métallurgie physique [LMP [Poitiers]]
Brochard, Sandrine [Auteur]
Laboratoire de métallurgie physique [LMP [Poitiers]]
Pizzagalli, Laurent [Auteur]
Laboratoire de métallurgie physique [LMP [Poitiers]]
Beauchamp, Pierre [Auteur]
Laboratoire de métallurgie physique [LMP [Poitiers]]

Journal title :

Scripta Materialia

Abbreviated title :

Scripta Materialia

Volume number :

57

Pages :

1141-1144

Publisher :

Elsevier BV

Publication date :

2007-12

ISSN :

1359-6462

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]/Autre [cond-mat.other]

English abstract : [en]

Atomistic simulations using an EAM potential are carried out to investigate the first stages of plasticity in aluminium slabs, in particular the effect of both temperature and step geometry on the nucleation of dislocations ...
Show more >Atomistic simulations using an EAM potential are carried out to investigate the first stages of plasticity in aluminium slabs, in particular the effect of both temperature and step geometry on the nucleation of dislocations from surface steps. Temperature is shown to significantly reduce the elastic limit, and to activate the nucleation of dislocation half-loops. Twinning occurs by successive nucleations in adjacent glide planes. The presence of a kinked step is shown to have no influence on the nucleation mechanisms.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Autres travaux scientifiques

Submission date :

2020-02-21T10:28:46Z
2020-02-21T11:27:15Z
2020-03-17T15:38:52Z