Dislocation Interactions in .gamma.-Channels between .gamma.'-Particles of Superalloy Single Crystals.
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F01%3A07013145" target="_blank" >RIV/68081723:_____/01:07013145 - isvavai.cz</a>
Výsledek na webu
—
DOI - Digital Object Identifier
—
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Dislocation Interactions in .gamma.-Channels between .gamma.'-Particles of Superalloy Single Crystals.
Popis výsledku v původním jazyce
In the present work, a discrete dislocation model (DDM) is used to study interactions of y-channel dislocations in .gamma./.gamma.'-microstructures of superalloy single crystals. The study considers three types of .gamma.-channels, 12 (isolated) octahedral face centered cubic slip systems and two macroscopic crystallographic shear-loading conditions. It was found that different types of .gamma.-channels vary with respect to the number of dislocations, which can enter the channels. This effect becomes more important in the presence of misfit stresses. Misfit stresses were integrated into the present analysis by performing preliminary thermoelastic misfit stress calculations, which served as one input for the calculation of the overall stress state. Thetwo other input elements to the overall stress state are the stresses associated with external loading and the dislocation stress fields. The effect of the overall stress state is evaluated considering the Peach-Koehler force, which acts
Název v anglickém jazyce
Dislocation Interactions in .gamma.-Channels between .gamma.'-Particles of Superalloy Single Crystals.
Popis výsledku anglicky
In the present work, a discrete dislocation model (DDM) is used to study interactions of y-channel dislocations in .gamma./.gamma.'-microstructures of superalloy single crystals. The study considers three types of .gamma.-channels, 12 (isolated) octahedral face centered cubic slip systems and two macroscopic crystallographic shear-loading conditions. It was found that different types of .gamma.-channels vary with respect to the number of dislocations, which can enter the channels. This effect becomes more important in the presence of misfit stresses. Misfit stresses were integrated into the present analysis by performing preliminary thermoelastic misfit stress calculations, which served as one input for the calculation of the overall stress state. Thetwo other input elements to the overall stress state are the stresses associated with external loading and the dislocation stress fields. The effect of the overall stress state is evaluated considering the Peach-Koehler force, which acts
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
BM - Fyzika pevných látek a magnetismus
OECD FORD obor
—
Návaznosti výsledku
Projekt
<a href="/cs/project/OC%20P3.50" target="_blank" >OC P3.50: Anisotropie creepu v heterogenních materiálech</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2001
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Materials Science and Engineering. A
ISSN
0921-5093
e-ISSN
—
Svazek periodika
319-321
Číslo periodika v rámci svazku
N/A
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
4
Strana od-do
379-382
Kód UT WoS článku
—
EID výsledku v databázi Scopus
—