Critical grain size for dislocation storage and consequences for strain hardening of nanocrystalline materials

Olivier Bouaziz; Y. Estrin; Yves Brechet; J.D. Embury

doi:10.1016/j.scriptamat.2010.05.006

Article dans une revue

Critical grain size for dislocation storage and consequences for strain hardening of nanocrystalline materials

Olivier Bouaziz ^{1, 2} Y. Estrin ^{3, 4} Yves Brechet ⁵ J.D. Embury ⁶

1 ArcelorMittal Maizières Research SA

2 MAT - Centre des Matériaux

3 ARC Centre of Excellence for Design in Light Metals

4 CSIRO Division of Materials Science and Engineering

5 SIMaP [2007-2015] - Science et Ingénierie des Matériaux et Procédés [2007-2015]

6 McMaster University [Hamilton, Ontario]

Abstract : We consider strain hardening of nanostructured materials and propose a physically based interpretation of their low strain hardening capability in terms of a reduced storage rate of dislocations. The model suggested provides a modification of the Kocks–Mecking–Estrin evolution law for dislocation storage for nanostructured materials and predicts a critical grain size below which the strain hardening rate drops off.

Keywords : Strain hardening Nanostructure Dislocations Diffusion

Type de document :

Article dans une revue

Domaine :

Sciences de l'ingénieur [physics] / Matériaux

Liste complète des métadonnées

https://hal-mines-paristech.archives-ouvertes.fr/hal-00509787
Contributeur : Bibliothèque Umr7633 <>
Soumis le : lundi 16 août 2010 - 14:38:09
Dernière modification le : jeudi 24 septembre 2020 - 18:30:04

Critical grain size for dislocation storage and consequences for strain hardening of nanocrystalline materials

Identifiants

Collections

Citation

Exporter

Métriques

495

Critical grain size for dislocation storage and consequences for strain hardening of nanocrystalline materials

Identifiants

Collections

Citation

Exporter

Partager

Métriques

495