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A model of a formation of a deformation band structure

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00228213" target="_blank" >RIV/68407700:21110/14:00228213 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    A model of a formation of a deformation band structure

  • Original language description

    The formation of deformation bands with the typically alternating sign of the misorientation across their boundaries is interpreted as a spontaneous deformation instability caused by an anisotropy of hardening. To analyze the nature of the fragmentationa model of a rigid-plastic crystal domain deformed by symmetric double slip in a plane strain compression is considered. The basic reason of the deformation band existence is that a local decrease of number of active slip systems in the bands is energetically less costly than a homogeneous deformation by multislip. However, such bands have an extreme orientation and their width tends to zero. This trend is modified by hardening caused by a buildup of the band boundaries and by a dislocation bowing (Orowan) stress. The model provides an explanation of the observed orientation of the bands, their width, the band reorientation occurring at large strains, the misorientation across the band boundaries, and their dislocation composition.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    BM - Solid-state physics and magnetism

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GAP107%2F12%2F0121" target="_blank" >GAP107/12/0121: A mechanism of ultra-fine substructure formation induced by severe plastic deformation</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2014

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Proceedings of the 35th Risoe International Symposium on Materials Science

  • ISBN

    978-87-92896-94-0

  • ISSN

  • e-ISSN

  • Number of pages

    8

  • Pages from-to

    357-364

  • Publisher name

    Technical University of Denmark, BYG.DTU

  • Place of publication

    Lyngby

  • Event location

    Risoe

  • Event date

    Sep 1, 2014

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article