Stress dependence of the Peierls barrier of 1/2<111> screw dislocations in BCC metals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F13%3A00395120" target="_blank" >RIV/68081723:_____/13:00395120 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.actamat.2013.06.047" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2013.06.047</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2013.06.047" target="_blank" >10.1016/j.actamat.2013.06.047</a>

Result language

angličtina

Original language name

Stress dependence of the Peierls barrier of 1/2<111> screw dislocations in BCC metals

Original language description

The recently formulated constrained nudged elastic band method with atomic relaxations (NEB + r) (Gröger R, Vitek V. Model Simul Mater Sci Eng 2012;20:035019) is used to investigate the dependence of the Peierls barrier of 1/2<111> screw dislocations inbody-centered cubic metals on non-glide stresses. These are the shear stresses parallel to the slip direction acting in the planes of the <111> zone different from the slip plane, and the shear stresses perpendicular to the slip direction. Both these shear stresses modify the structure of the dislocation core and thus alter both the Peierls barrier and the related Peierls stress. Understanding of this effect of loading is crucial for the development of mesoscopic models of thermally activated dislocation motion via formation and propagation of pairs of kinks. The Peierls stresses and related choices of the glide planes determined from the Peierls barriers agree with the results of molecular statics calculations (Gröger R, Bailey AG, Vit

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

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

Name of the periodical

Acta Materialia

ISSN

1359-6454

e-ISSN

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Volume of the periodical

61

Issue of the periodical within the volume

17

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

6362-6371

UT code for WoS article

000324791700004

EID of the result in the Scopus database

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