Abstract

A brief review of the theoretical models which describe specific plastic deformation mechanisms in ultrafine-grained materials with nanotwinned structure (nanotwinned materials) is presented. In particular, micromechanism of nanotwin widening and micromechanism of combined action of lattice dislocation slip and twin boundary migration in nanotwinned materials are considered. Dependence of the flow stress on the plastic strain in nanotwinned cooper (Cu) is calculated. Also, dependence of the yield stress on twin thickness in nanotwinned copper (Cu) is theoretically described. Our theoretical results and their comparison with corresponding experimental data in the exemplary case of nanotwinned cooper (Cu) are discussed.

Original languageEnglish
Pages (from-to)40-52
Number of pages13
JournalMaterials Physics and Mechanics
Volume30
Issue number1
Publication statusPublished - 2017

Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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