A model of a formation of a deformation band structure

Kód výsledku v 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>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

A model of a formation of a deformation band structure

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

A model of a formation of a deformation band structure

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP107%2F12%2F0121" target="_blank" >GAP107/12/0121: Mechanismus tvorby ultra jemné substruktury silnou plastickou deformací</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 35th Risoe International Symposium on Materials Science

ISBN

978-87-92896-94-0

ISSN

—

e-ISSN

—

Počet stran výsledku

8

Strana od-do

357-364

Název nakladatele

Technical University of Denmark, BYG.DTU

Místo vydání

Lyngby

Místo konání akce

Risoe

Datum konání akce

1. 9. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—