Lokální amplituda smykové deformace a skluzová aktivita perzistentních skluzových pásů během půlcyklu v polykrystalech niklu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F08%3A00310906" target="_blank" >RIV/68081723:_____/08:00310906 - 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

Local shear strain amplitude and half-cycle slip activity of persistent slip bands in nickel polycrystals

Popis výsledku v původním jazyce

Local shear strain amplitude and half-slip activity of persistent slip bands (PSBs) in polycrystalline nickel was investigated after half-cycle deformation at different stages of fatigue life using atomic force microscopy (AFM) and scanning electron microscopy (SEM). In-situ experiments were adopted to study both the formation of slip steps during half-cycle loading as well as the development of extrusions with increasing number of cycles. During half-cycle loading the slip steps do not develop proportionally to the applied plastic strain and only part of the accumulated PSB volume is active. The half-cycle slip activity of PSBs strongly depends on the stages of fatigue life. The local shear strain amplitude of PSBs in polycrystals is comparable to that for single crystals and is nearly independent on the stage of fatigue life. A correlation between cumulated volume fraction of PSBs, half-cycle slip activity and orientation of the activated slip systems was found.

Název v anglickém jazyce

Local shear strain amplitude and half-cycle slip activity of persistent slip bands in nickel polycrystals

Popis výsledku anglicky

Local shear strain amplitude and half-slip activity of persistent slip bands (PSBs) in polycrystalline nickel was investigated after half-cycle deformation at different stages of fatigue life using atomic force microscopy (AFM) and scanning electron microscopy (SEM). In-situ experiments were adopted to study both the formation of slip steps during half-cycle loading as well as the development of extrusions with increasing number of cycles. During half-cycle loading the slip steps do not develop proportionally to the applied plastic strain and only part of the accumulated PSB volume is active. The half-cycle slip activity of PSBs strongly depends on the stages of fatigue life. The local shear strain amplitude of PSBs in polycrystals is comparable to that for single crystals and is nearly independent on the stage of fatigue life. A correlation between cumulated volume fraction of PSBs, half-cycle slip activity and orientation of the activated slip systems was found.

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název statě ve sborníku

Plasticity, Failure and Fatigue in Structural Materials - from Macro to Nano

ISBN

978-0-87339-714-8

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

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Název nakladatele

Minerals, Metals and Materials Society

Místo vydání

Warrendale, Pennsylvania

Místo konání akce

New Orleans

Datum konání akce

9. 3. 2008

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000255831000016