| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1500939 | Scripta Materialia | 2009 | 4 Pages |
Abstract
A model for predicting the steady-state flow stress in ultrafine-grained and nanocrystalline face-centred cubic metals based on irreversible thermodynamics is presented. Grain size, temperature and strain-rate effects are incorporated. Nanoscale effects are accounted for via dislocation propagation and annihilation mechanisms invoking an Orowan-type dislocation glide mechanism, and a vacancy-mediated annihilation mechanism at the interface, respectively. Model predictions show good agreement with experiments for pure Cu and Al.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mingxin Huang, Pedro E.J. Rivera-Díaz-del-Castillo, Olivier Bouaziz, Sybrand van der Zwaag,