Role of localized non-equilibrium states in nucleation of plastic deformation in nanocrystalline materials

Dmitrij Sergeevich Kryzhevich, Aleksandr Vyacheslavovich Korchuganov, Konstantin Petrovich Zolnikov, Sergey Grigorievich Psakhie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A molecular dynamics simulation of the behavior of nanocrystalline materials in the fields of external influences was carried out. Crystallites of the fcc copper and bcc iron under different schemes of mechanical loading were investigated. Revealed specific localized nonequilibrium states served as the mechanism of formation and evolution of partial dislocations in fcc materials and twin growth in bcc materials. These non-equilibrium states were realized on the basis of local transformation of the martensitic type when the nearest surrounding of atoms – the centers of local rearrangements – changed according to the A-B(C) scheme, where A, B and C are types of crystal lattice. The bcc-fcc-bcc local rearrangements during twin growth were typical for bcc iron. The fcc-bcc-hcp and hcp-bcc-fcc local rearrangements during the partial dislocation movement were typical for fcc copper.

Original languageEnglish
Title of host publicationMaterials Structure and Micromechanics of Fracture VIII
EditorsPavel Sandera
PublisherTrans Tech Publications Ltd
Pages21-24
Number of pages4
ISBN (Print)9783038356264
DOIs
Publication statusPublished - 1 Jul 2017
Event8th International Conference on Materials Structure and Micromechanics of Fracture, MSMF8 - Brno, Czech Republic
Duration: 27 Jul 201629 Jul 2016

Publication series

NameSolid State Phenomena
Volume258 SSP
ISSN (Electronic)1662-9779

Conference

Conference8th International Conference on Materials Structure and Micromechanics of Fracture, MSMF8
CountryCzech Republic
CityBrno
Period27.7.1629.7.16

Fingerprint

Nanocrystalline materials
plastic deformation
Copper
Plastic deformation
nanocrystals
Nucleation
Iron
nucleation
iron
copper
Crystallites
crystal lattices
Crystal lattices
crystallites
Molecular dynamics
molecular dynamics
Atoms
Computer simulation
atoms
simulation

Keywords

  • Molecular dynamics
  • Plastic deformation
  • Protodefects
  • Structural changes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kryzhevich, D. S., Korchuganov, A. V., Zolnikov, K. P., & Psakhie, S. G. (2017). Role of localized non-equilibrium states in nucleation of plastic deformation in nanocrystalline materials. In P. Sandera (Ed.), Materials Structure and Micromechanics of Fracture VIII (pp. 21-24). (Solid State Phenomena; Vol. 258 SSP). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/SSP.258.21

Role of localized non-equilibrium states in nucleation of plastic deformation in nanocrystalline materials. / Kryzhevich, Dmitrij Sergeevich; Korchuganov, Aleksandr Vyacheslavovich; Zolnikov, Konstantin Petrovich; Psakhie, Sergey Grigorievich.

Materials Structure and Micromechanics of Fracture VIII. ed. / Pavel Sandera. Trans Tech Publications Ltd, 2017. p. 21-24 (Solid State Phenomena; Vol. 258 SSP).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kryzhevich, DS, Korchuganov, AV, Zolnikov, KP & Psakhie, SG 2017, Role of localized non-equilibrium states in nucleation of plastic deformation in nanocrystalline materials. in P Sandera (ed.), Materials Structure and Micromechanics of Fracture VIII. Solid State Phenomena, vol. 258 SSP, Trans Tech Publications Ltd, pp. 21-24, 8th International Conference on Materials Structure and Micromechanics of Fracture, MSMF8, Brno, Czech Republic, 27.7.16. https://doi.org/10.4028/www.scientific.net/SSP.258.21
Kryzhevich DS, Korchuganov AV, Zolnikov KP, Psakhie SG. Role of localized non-equilibrium states in nucleation of plastic deformation in nanocrystalline materials. In Sandera P, editor, Materials Structure and Micromechanics of Fracture VIII. Trans Tech Publications Ltd. 2017. p. 21-24. (Solid State Phenomena). https://doi.org/10.4028/www.scientific.net/SSP.258.21
Kryzhevich, Dmitrij Sergeevich ; Korchuganov, Aleksandr Vyacheslavovich ; Zolnikov, Konstantin Petrovich ; Psakhie, Sergey Grigorievich. / Role of localized non-equilibrium states in nucleation of plastic deformation in nanocrystalline materials. Materials Structure and Micromechanics of Fracture VIII. editor / Pavel Sandera. Trans Tech Publications Ltd, 2017. pp. 21-24 (Solid State Phenomena).
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