| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1501313 | Scripta Materialia | 2008 | 4 Pages |
Abstract
A model is suggested which describes a special mechanism for rotational deformation (plastic deformation accompanied by crystal lattice rotation) in nanocrystalline metals and ceramics. Within the model, the special rotational deformation occurs in a nanograin through formation of immobile disclinations whose strengths gradually increase during the formation process as a result of grain boundary sliding and diffusion. The conditions are calculated at which the special rotational deformation is energetically favorable in nanocrystalline Ni, α-Al2O3 (corundum) and TiN-based ceramics.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
I.A. Ovid’ko, A.G. Sheinerman,