 | Nanotech 2004 Vol. 3
Technical Proceedings of the 2004 NSTI Nanotechnology Conference and Trade Show, Volume 3
Chapter 3: Atomic and Mesoscale Modelling of Nanoscale Phenomena |
Orientation E®ects of Elastic-Plastic Deformation at Surfaces: Nanoindentation of Nickel Single Crystals | |
| Authors: | O. Kum |
| Affilation: | Clemson University, US |
| Pages: | 111 - 114 |
| Keywords: | nanoindentation, anisotropy, indentation curve, dislocation nucleation |
| Abstract: | Orientation effects in nanomechanical properties at the surfaces with molecular dyanmics were observed as a function of indenter size and indenter speed in three crystal orientations: 100, 110, and 111. The force vs displacement curves for indentation follows the Hertzian solution for elastic deformation of F = kd^1.5. However, the force fitted constant k showed a dependency on indenter size, velocity, and crystal orientations. The results of dislocation nucleations in different orientations also showed anisotropy: Stacking faults in the 100 deep partial dislocations in the 110 shallow partial dislocations followed by the stacking faults in the 111. |
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| ISBN: | 0-9728422-9-2 |
| Pages: | 561 |
| Hardcopy: | $79.95 |
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