Micromechanics of the transition from intergrain to intragrain deformation in nanomaterials

S.V. Bobylev, N.F. Morozov, I.A. Ovid’ko

Research output

1 Citation (Scopus)

Abstract

© 2015, Pleiades Publishing, Ltd.A micromechanism of the transition from intergrain sliding to intragrain glide by nucleation and emission of lattice partial dislocations at grain-boundary dislocations is proposed and described theoretically. The energy characteristics of this process are calculated. It is shown that the nucleation of lattice partial dislocations is energetically efficient and can occur athermally (without the energy barrier) under conditions of the action of ultrahigh mechanical stresses. The critical stresses required for the athermal nucleation and emission of dislocations are calculated.
Original languageEnglish
Pages (from-to)573-576
JournalDoklady Physics
Issue number12
DOIs
Publication statusPublished - 2015

Cite this

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title = "Micromechanics of the transition from intergrain to intragrain deformation in nanomaterials",
abstract = "{\circledC} 2015, Pleiades Publishing, Ltd.A micromechanism of the transition from intergrain sliding to intragrain glide by nucleation and emission of lattice partial dislocations at grain-boundary dislocations is proposed and described theoretically. The energy characteristics of this process are calculated. It is shown that the nucleation of lattice partial dislocations is energetically efficient and can occur athermally (without the energy barrier) under conditions of the action of ultrahigh mechanical stresses. The critical stresses required for the athermal nucleation and emission of dislocations are calculated.",
author = "S.V. Bobylev and N.F. Morozov and I.A. Ovid’ko",
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journal = "Doklady Physics",
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Micromechanics of the transition from intergrain to intragrain deformation in nanomaterials. / Bobylev, S.V.; Morozov, N.F.; Ovid’ko, I.A.

In: Doklady Physics, No. 12, 2015, p. 573-576.

Research output

TY - JOUR

T1 - Micromechanics of the transition from intergrain to intragrain deformation in nanomaterials

AU - Bobylev, S.V.

AU - Morozov, N.F.

AU - Ovid’ko, I.A.

PY - 2015

Y1 - 2015

N2 - © 2015, Pleiades Publishing, Ltd.A micromechanism of the transition from intergrain sliding to intragrain glide by nucleation and emission of lattice partial dislocations at grain-boundary dislocations is proposed and described theoretically. The energy characteristics of this process are calculated. It is shown that the nucleation of lattice partial dislocations is energetically efficient and can occur athermally (without the energy barrier) under conditions of the action of ultrahigh mechanical stresses. The critical stresses required for the athermal nucleation and emission of dislocations are calculated.

AB - © 2015, Pleiades Publishing, Ltd.A micromechanism of the transition from intergrain sliding to intragrain glide by nucleation and emission of lattice partial dislocations at grain-boundary dislocations is proposed and described theoretically. The energy characteristics of this process are calculated. It is shown that the nucleation of lattice partial dislocations is energetically efficient and can occur athermally (without the energy barrier) under conditions of the action of ultrahigh mechanical stresses. The critical stresses required for the athermal nucleation and emission of dislocations are calculated.

U2 - 10.1134/S1028335815120095

DO - 10.1134/S1028335815120095

M3 - Article

SP - 573

EP - 576

JO - Doklady Physics

JF - Doklady Physics

SN - 1028-3358

IS - 12

ER -