Nanometre-scale grain-boundary sliding in copper bicrystals with [001]twist boundaries
- 1 July 1996
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Letters
- Vol. 74 (1) , 9-16
- https://doi.org/10.1080/095008396180506
Abstract
The boundary-dependent capability of grain-boundary sliding for various [001] twist boundaries in Cu has been systematically examined below 573K. The sliding has been detected by observing the rotation of moire fringes on boundary bcc Fe-Co particles in an aged Cu-Fe-Co alloy. The magnitude of sliding is not more than 1 nm. The activation energy Q and pre-exponential factor eta0 of boundary viscosity against misorientation angle curves show several cusps and these curves are analogous to the boundary energy against misorientation curve. A lower-energy boundary has a higher viscosity with a larger value of Q and a smaller value of η0.Keywords
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