Quantitative Model of the Surface Relief Formation in Cyclic Straining

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00465430" target="_blank" >RIV/68081723:_____/15:00465430 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.12693/APhysPolA.128.675" target="_blank" >http://dx.doi.org/10.12693/APhysPolA.128.675</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.12693/APhysPolA.128.675" target="_blank" >10.12693/APhysPolA.128.675</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quantitative Model of the Surface Relief Formation in Cyclic Straining

Popis výsledku v původním jazyce

The cyclic strain localization in crystalline materials subjected to cyclic loading results in speci c dislocation arrangement in persistent slip bands consisting of alternating dislocation rich and dislocation poor volumes. In the present model the interaction of mobile dislocations in persistent slip band leading to the formation of point defects during cyclic straining is considered. Point defects are steadily produced and simultaneously annihilated due to localized cyclic straining. The non-equilibrium point defects migrate to the matrix and result in transfer of matter between persistent slip band and the matrix and formation of the internal stresses both in the persistent slip band and in the matrix. Plastic relaxation of internal stresses leads to the formation of the characteristic surface relief in the form of persistent slip markings (extrusions and intrusions). Process of point defect migration is quantitatively described and the form of extrusion and parallel intrusions is predicted under some simplifying assumptions. The predictions of the model are discussed and predicted surface relief is compared with selected observations of surface relief produced by cyclic straining.

Název v anglickém jazyce

Quantitative Model of the Surface Relief Formation in Cyclic Straining

Popis výsledku anglicky

The cyclic strain localization in crystalline materials subjected to cyclic loading results in speci c dislocation arrangement in persistent slip bands consisting of alternating dislocation rich and dislocation poor volumes. In the present model the interaction of mobile dislocations in persistent slip band leading to the formation of point defects during cyclic straining is considered. Point defects are steadily produced and simultaneously annihilated due to localized cyclic straining. The non-equilibrium point defects migrate to the matrix and result in transfer of matter between persistent slip band and the matrix and formation of the internal stresses both in the persistent slip band and in the matrix. Plastic relaxation of internal stresses leads to the formation of the characteristic surface relief in the form of persistent slip markings (extrusions and intrusions). Process of point defect migration is quantitatively described and the form of extrusion and parallel intrusions is predicted under some simplifying assumptions. The predictions of the model are discussed and predicted surface relief is compared with selected observations of surface relief produced by cyclic straining.

Druh

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

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

—

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Acta Physica Polonica. A

ISSN

0587-4246

e-ISSN

—

Svazek periodika

128

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

6

Strana od-do

675-680

Kód UT WoS článku

000366357300051

EID výsledku v databázi Scopus

2-s2.0-84950287662