Initiation and Early Growth of FatiguenCracks

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00531691" target="_blank" >RIV/68081723:_____/19:00531691 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-3-030-05861-6_109" target="_blank" >http://dx.doi.org/10.1007/978-3-030-05861-6_109</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-030-05861-6_109" target="_blank" >10.1007/978-3-030-05861-6_109</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Initiation and Early Growth of FatiguenCracks

Popis výsledku v původním jazyce

Experimental evidence concerning the mechanism of initiation and earlyngrowth of short cracks are studied using FESEM, FIB and STEM observations of thensurface of fatigued specimens of several f.c.c.metals. The true shape of persistent slipnmarkings with high resolution is obtained on FIB cuts and using lamella milled on thensurface. Thick extrusions and parallel thin crack-like intrusions are typical featurenbefore crack initiates from the tip of the intrusion. STEM also reveals the relation ofnthe surface relief and internal structure of the material showing in copper ladder-likendislocation structure. The shape of the persistent slip markings is confronted with thenpredictions of the recent theoretical models. Study of the short crack growth and itsnkinetics shows high density of initiated surface cracks and proves the acceleration ofnthe crack growth rate due to linkage of principal crack with initiated surface cracks.nFatigue life is determined by the growth of short cracks and short crack growth lawnis equivalent to the Manson–Coffin law.

Název v anglickém jazyce

Initiation and Early Growth of FatiguenCracks

Popis výsledku anglicky

Experimental evidence concerning the mechanism of initiation and earlyngrowth of short cracks are studied using FESEM, FIB and STEM observations of thensurface of fatigued specimens of several f.c.c.metals. The true shape of persistent slipnmarkings with high resolution is obtained on FIB cuts and using lamella milled on thensurface. Thick extrusions and parallel thin crack-like intrusions are typical featurenbefore crack initiates from the tip of the intrusion. STEM also reveals the relation ofnthe surface relief and internal structure of the material showing in copper ladder-likendislocation structure. The shape of the persistent slip markings is confronted with thenpredictions of the recent theoretical models. Study of the short crack growth and itsnkinetics shows high density of initiated surface cracks and proves the acceleration ofnthe crack growth rate due to linkage of principal crack with initiated surface cracks.nFatigue life is determined by the growth of short cracks and short crack growth lawnis equivalent to the Manson–Coffin law.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

TMS 2019 148th Annual

ISBN

978-3-030-05861-6

ISSN

2367-1181

e-ISSN

—

Počet stran výsledku

11

Strana od-do

1125-1135

Název nakladatele

Springer

Místo vydání

Cham

Místo konání akce

San Antonio

Datum konání akce

10. 3. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000560397400107