Study of cyclic strain localization and fatigue crack initiation using FIB technique

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F10%3A00353822" target="_blank" >RIV/68081723:_____/10:00353822 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Study of cyclic strain localization and fatigue crack initiation using FIB technique

Popis výsledku v původním jazyce

Focused ion beam (FIB) technique together with other advanced microscopic techniques was applied to study the early microstructural changes leading to fatigue crack initiation in cyclically strained polycrystals. Dislocation structures of persistent slipbands (PSBs) and surrounding matrix were investigated in detail using electron channeling contrast imaging (ECCI) technique (simultaneously in the FIB cross-section and on the specimen surface) and transmission electron microscopy (TEM) of thin surfacefoils prepared by in situ lift-out technique. True shape of extrusions and intrusions and the path of initiated fatigue cracks were assessed in three dimensions by FIB micro-tomography. Advantageous potential and some limitations of FIB technique in fatigue crack initiation studies in polycrystals are highlighted.

Název v anglickém jazyce

Study of cyclic strain localization and fatigue crack initiation using FIB technique

Popis výsledku anglicky

Focused ion beam (FIB) technique together with other advanced microscopic techniques was applied to study the early microstructural changes leading to fatigue crack initiation in cyclically strained polycrystals. Dislocation structures of persistent slipbands (PSBs) and surrounding matrix were investigated in detail using electron channeling contrast imaging (ECCI) technique (simultaneously in the FIB cross-section and on the specimen surface) and transmission electron microscopy (TEM) of thin surfacefoils prepared by in situ lift-out technique. True shape of extrusions and intrusions and the path of initiated fatigue cracks were assessed in three dimensions by FIB micro-tomography. Advantageous potential and some limitations of FIB technique in fatigue crack initiation studies in polycrystals are highlighted.

Druh

O - Ostatní výsledky

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F10%2F2371" target="_blank" >GAP108/10/2371: Lokalizace a ireverzibilita cyklického skluzu v polykrystalech</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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