The role of the excess volume at the nucleation of plastic deformation in metals

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

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publicationProceedings of the 8th International Conference on Computational Plasticity - Fundamentals and Applications, COMPLAS 2015
PublisherInternational Center for Numerical Methods in Engineering
Pages1011-1019
Number of pages9
ISBN (Print)9788494424465
Publication statusPublished - 2015
Event13th International Conference on Computational Plasticity, COMPLAS 2015 - Barcelona, Spain
Duration: 1 Sep 20153 Sep 2015

Other

Other13th International Conference on Computational Plasticity, COMPLAS 2015
CountrySpain
CityBarcelona
Period1.9.153.9.15

Keywords

  • Defects formation
  • Molecular dynamics
  • Nanoindentation
  • Plastic deformation

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Theoretical Computer Science

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  • 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.