Únavové vlastnosti UFG Cu připravené pomocí ECAP technologie

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F07%3APU72666" target="_blank" >RIV/00216305:26210/07:PU72666 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

čínština

Název v původním jazyce

Fatigue Property of UFG Cu by ECAP

Popis výsledku v původním jazyce

The fatigue life and cyclic deformation behavior of UFG copper produced by equal channel angular pressing (ECAP) were studied and the changes of the grain size and the development of slip bands are observed by means of SEM electron back scattering diffraction and SEM, respectively. The result shows that the fatigue limit of the UFG copper corresponding to 107 cycles is 153 MPa which is the double of fatigue limit of the coarse grained (CG) copper. Cyclic softening occurs in the low-cycle fatigue regionwhereas stable cyclic behavior or even cyclic hardening occurs in the high-cycle region. Persistent slip bands (PSB)-like shear bands (SBs) are approximately parallel to the shearing plane of last pressing. The formation of SBs and grain boundary slidingare the main factor causing crack nucleation as well as fatigue failure.

Název v anglickém jazyce

Fatigue Property of UFG Cu by ECAP

Popis výsledku anglicky

The fatigue life and cyclic deformation behavior of UFG copper produced by equal channel angular pressing (ECAP) were studied and the changes of the grain size and the development of slip bands are observed by means of SEM electron back scattering diffraction and SEM, respectively. The result shows that the fatigue limit of the UFG copper corresponding to 107 cycles is 153 MPa which is the double of fatigue limit of the coarse grained (CG) copper. Cyclic softening occurs in the low-cycle fatigue regionwhereas stable cyclic behavior or even cyclic hardening occurs in the high-cycle region. Persistent slip bands (PSB)-like shear bands (SBs) are approximately parallel to the shearing plane of last pressing. The formation of SBs and grain boundary slidingare the main factor causing crack nucleation as well as fatigue failure.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název periodika

ACTA METALLURGICA SINICA

ISSN

0412-1961

e-ISSN

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Svazek periodika

43

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

5

Strana od-do

498-502

Kód UT WoS článku

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EID výsledku v databázi Scopus

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