Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 12/2009 |
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<mark>Journal</mark> | Scripta Materialia |
Issue number | 12 |
Volume | 61 |
Number of pages | 4 |
Pages (from-to) | 1113-1116 |
Publication Status | Published |
<mark>Original language</mark> | English |
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.