Abstract
The computer simulation results on the atomic structure of the copper crystallite and its behavior in nanoindentation demonstrate the key role of local structural transformations in nucleation of plasticity. The generation of local structural transformations can be considered as an elementary event during the formation of higher scale defects, including partial dislocations and stacking faults. The cause for local structural transformations, both direct fcc-hcp and reverse hcp-fcc, is an abrupt local increase in atomic volume. A characteristic feature is that the values of local volume jumps in direct and reverse structural transformations are comparable with that in melting and lie in the range 5-7 %.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 8th International Conference on Computational Plasticity - Fundamentals and Applications, COMPLAS 2015 |
| Publisher | International Center for Numerical Methods in Engineering |
| Pages | 1011-1019 |
| Number of pages | 9 |
| ISBN (Print) | 9788494424465 |
| Publication status | Published - 2015 |
| Event | 13th International Conference on Computational Plasticity, COMPLAS 2015 - Barcelona, Spain Duration: 1 Sep 2015 → 3 Sep 2015 |
Other
| Other | 13th International Conference on Computational Plasticity, COMPLAS 2015 |
|---|---|
| Country | Spain |
| City | Barcelona |
| Period | 1.9.15 → 3.9.15 |
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Keywords
- Defects formation
- Molecular dynamics
- Nanoindentation
- Plastic deformation
ASJC Scopus subject areas
- Computational Theory and Mathematics
- Theoretical Computer Science
Cite this
Kryzhevich, D. S., Korchuganov, A. V., Zolnikov, K. P., & Psakhie, S. G. (2015). The role of the excess volume at the nucleation of plastic deformation in metals. In Proceedings of the 8th International Conference on Computational Plasticity - Fundamentals and Applications, COMPLAS 2015 (pp. 1011-1019). International Center for Numerical Methods in Engineering.