Fatigue behaviour of ultrafine-grained copper in very high cycle fatigue regime
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F08%3A00361156" target="_blank" >RIV/68081723:_____/08:00361156 - isvavai.cz</a>
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Fatigue behaviour of ultrafine-grained copper in very high cycle fatigue regime
Popis výsledku v původním jazyce
Fatigue life of ultrafine-grained copper of conventional purity produced by equal-channel angular pressing by route Bc was determined under controlled stress conditions at ultrasonic and 200 Hz frequency and compared with the fatigue life of conventional-grained copper. The fatigue life of ultrafine-grained copper was found to be significantly higher than that of copper with conventional grain size. No grain coarsening was detected by means of transmission electron microscopy and electron back scattering diffraction after application of 1010 cycles. Fatigue slip markings on the surface, which are sites of crack initiation, tend to follow the shear planes of the ECAP process. The distribution of fatigue slip markings on the surface is very inhomogeneous. The mechanism of their formation at loading in very high cycle region consisting in cooperative grain boundary sliding along preferential planes related to the ECAP process is discussed.
Název v anglickém jazyce
Fatigue behaviour of ultrafine-grained copper in very high cycle fatigue regime
Popis výsledku anglicky
Fatigue life of ultrafine-grained copper of conventional purity produced by equal-channel angular pressing by route Bc was determined under controlled stress conditions at ultrasonic and 200 Hz frequency and compared with the fatigue life of conventional-grained copper. The fatigue life of ultrafine-grained copper was found to be significantly higher than that of copper with conventional grain size. No grain coarsening was detected by means of transmission electron microscopy and electron back scattering diffraction after application of 1010 cycles. Fatigue slip markings on the surface, which are sites of crack initiation, tend to follow the shear planes of the ECAP process. The distribution of fatigue slip markings on the surface is very inhomogeneous. The mechanism of their formation at loading in very high cycle region consisting in cooperative grain boundary sliding along preferential planes related to the ECAP process is discussed.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
JG - Hutnictví, kovové materiály
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/1P05ME804" target="_blank" >1P05ME804: Únavové vlastnosti ultrajemnozrnných slitin mědi a hořčíku</a><br>
Návaznosti
Z - Vyzkumny zamer (s odkazem do CEZ)
Ostatní
Rok uplatnění
2008
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Materiálové inžinierstvo - Materials Engineering
ISSN
1335-0803
e-ISSN
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Svazek periodika
15
Číslo periodika v rámci svazku
4
Stát vydavatele periodika
SK - Slovenská republika
Počet stran výsledku
5
Strana od-do
1-5
Kód UT WoS článku
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EID výsledku v databázi Scopus
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