A crystal plasticity 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%2F15%3A00239550" target="_blank" >RIV/68407700:21110/15:00239550 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985556:_____/15:00456300 RIV/00216208:11320/15:10334587

Výsledek na webu

<a href="http://dx.doi.org/10.1080/14786435.2015.1090638" target="_blank" >http://dx.doi.org/10.1080/14786435.2015.1090638</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/14786435.2015.1090638" target="_blank" >10.1080/14786435.2015.1090638</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A crystal plasticity 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 spontaneous deformation instability caused by anisotropy of hardening. To analyse the nature of the fragmentation, a model of a rigid-plastic crystal domain deformed by symmetric double slip in a plane-strain compression is considered. The basic reason for the deformation band existence is that a local decrease in number of active slip systems in the bands is energetically less costly than a homogeneous deformation by multislip. However, such model of the bands predicts their extreme orientation and their width tends to zero. This trend is modified by hardening caused by a build up of the band boundaries and by a dislocation bowing (Orowan) stress. The model provides an explanation of observed orientation of the bands, their width and the significant change in the structural morphology seen as the band reorientation occurs at large strains.The predictio

Název v anglickém jazyce

A crystal plasticity 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 spontaneous deformation instability caused by anisotropy of hardening. To analyse the nature of the fragmentation, a model of a rigid-plastic crystal domain deformed by symmetric double slip in a plane-strain compression is considered. The basic reason for the deformation band existence is that a local decrease in number of active slip systems in the bands is energetically less costly than a homogeneous deformation by multislip. However, such model of the bands predicts their extreme orientation and their width tends to zero. This trend is modified by hardening caused by a build up of the band boundaries and by a dislocation bowing (Orowan) stress. The model provides an explanation of observed orientation of the bands, their width and the significant change in the structural morphology seen as the band reorientation occurs at large strains.The predictio

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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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

2015

Kód důvěrnosti údajů

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

Název periodika

Philosophical Magazine

ISSN

1478-6435

e-ISSN

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Svazek periodika

95

Číslo periodika v rámci svazku

32

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

3621-3639

Kód UT WoS článku

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EID výsledku v databázi Scopus

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