Mesoscale plastic texture in body-centered cubic metals under uniaxial load

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F17%3A00481151" target="_blank" >RIV/68081723:_____/17:00481151 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevMaterials.1.063601" target="_blank" >http://dx.doi.org/10.1103/PhysRevMaterials.1.063601</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevMaterials.1.063601" target="_blank" >10.1103/PhysRevMaterials.1.063601</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mesoscale plastic texture in body-centered cubic metals under uniaxial load

Popis výsledku v původním jazyce

We develop a minimal continuum dislocation dynamics model for slip in bcc metals that accounts explicitlynfor non-Schmid behavior of screw dislocations in these materials. The dislocation substructure is represented by a continuum distribution of 1/2[111] screw dislocations moving on three possible {110} planes according to the flow rule that describes the response of isolated screw dislocations to external loads. The cross-slip of dislocations is assessed using the master equation which takes into account different energy barriers for dislocations moving on the three slip planes. To demonstrate the performance of the model, we study the buildup of plastic strain at 77 K in both tension and compression for a number of loading directions covering the entire area of the standard stereographic triangle. The non-Schmid behavior of screw dislocations is shown to persist to the continuum level, whereby interactions between dislocations merely affect the rate of plastic flow.

Název v anglickém jazyce

Mesoscale plastic texture in body-centered cubic metals under uniaxial load

Popis výsledku anglicky

We develop a minimal continuum dislocation dynamics model for slip in bcc metals that accounts explicitlynfor non-Schmid behavior of screw dislocations in these materials. The dislocation substructure is represented by a continuum distribution of 1/2[111] screw dislocations moving on three possible {110} planes according to the flow rule that describes the response of isolated screw dislocations to external loads. The cross-slip of dislocations is assessed using the master equation which takes into account different energy barriers for dislocations moving on the three slip planes. To demonstrate the performance of the model, we study the buildup of plastic strain at 77 K in both tension and compression for a number of loading directions covering the entire area of the standard stereographic triangle. The non-Schmid behavior of screw dislocations is shown to persist to the continuum level, whereby interactions between dislocations merely affect the rate of plastic flow.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Physical Review Materials

ISSN

2475-9953

e-ISSN

—

Svazek periodika

1

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000416593900001

EID výsledku v databázi Scopus

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