Peculiarities of plastic deformation nucleation in copper under nanoindentation

Dmitrij S. Kryzhevich, Aleksandr V. Korchuganov, Konstantin P. Zolnikov, Sergey G. Psakhie

Division for Materials Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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	Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
Publisher	American Institute of Physics Inc.
Volume	1683
ISBN (Electronic)	9780735413306
DOIs	https://doi.org/10.1063/1.4932798
Publication status	Published - 27 Oct 2015
Event	International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015 - Tomsk, Russian Federation Duration: 21 Sep 2015 → 25 Sep 2015

Conference

Conference	International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015
Country	Russian Federation
City	Tomsk
Period	21.9.15 → 25.9.15

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ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

Kryzhevich, D. S., Korchuganov, A. V., Zolnikov, K. P., & Psakhie, S. G. (2015). Peculiarities of plastic deformation nucleation in copper under nanoindentation. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures (Vol. 1683). [020108] American Institute of Physics Inc.. https://doi.org/10.1063/1.4932798

Peculiarities of plastic deformation nucleation in copper under nanoindentation. / Kryzhevich, Dmitrij S.; Korchuganov, Aleksandr V.; Zolnikov, Konstantin P.; Psakhie, Sergey G.

Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. Vol. 1683 American Institute of Physics Inc., 2015. 020108.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kryzhevich, DS, Korchuganov, AV, Zolnikov, KP & Psakhie, SG 2015, Peculiarities of plastic deformation nucleation in copper under nanoindentation. in Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. vol. 1683, 020108, American Institute of Physics Inc., International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015, Tomsk, Russian Federation, 21.9.15. https://doi.org/10.1063/1.4932798

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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{\%}.",

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AB - 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%.

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Access to Document

10.1063/1.4932798