Únavová pevnost, mikrostrukturní stabilita a lokalizace deformace ultrajemnozrnné mědi

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F06%3A00043862" target="_blank" >RIV/68081723:_____/06:00043862 - 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

Fatigue strength, microstructural stability and strain localization in ultrafine-grained copper

Popis výsledku v původním jazyce

Fatigue lifetime under stress control of ultrafine-grained Cu of 99.9 % purity prepared by equal channel angular pressing has been shown to exceed that of conventionally-grained cold worked counterparts by a factor of 1.7 in low-, high- and very-high-cycle region. The electron back scattering diffraction technique did not reveal changes of bulk microstructure due to cyclic loading. Minor changes of dislocation microstructure were detected by transmission electron microcopy. Qualitative change from moderate cyclic hardening to cyclic softening was observed with increasing stress amplitude. Comparison of S-N data with those available in literature shows substantially higher lifetime of material studied in this work in the high-cycle and very-high-cycle region. This effect is attributed to high stability of grain structure and lower purity of the examined ultrafine-grained copper.

Název v anglickém jazyce

Fatigue strength, microstructural stability and strain localization in ultrafine-grained copper

Popis výsledku anglicky

Fatigue lifetime under stress control of ultrafine-grained Cu of 99.9 % purity prepared by equal channel angular pressing has been shown to exceed that of conventionally-grained cold worked counterparts by a factor of 1.7 in low-, high- and very-high-cycle region. The electron back scattering diffraction technique did not reveal changes of bulk microstructure due to cyclic loading. Minor changes of dislocation microstructure were detected by transmission electron microcopy. Qualitative change from moderate cyclic hardening to cyclic softening was observed with increasing stress amplitude. Comparison of S-N data with those available in literature shows substantially higher lifetime of material studied in this work in the high-cycle and very-high-cycle region. This effect is attributed to high stability of grain structure and lower purity of the examined ultrafine-grained copper.

Druh

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

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Material Science and Engineering A: Structural materials

ISSN

0921-5093

e-ISSN

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Svazek periodika

A 424

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

97-104

Kód UT WoS článku

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EID výsledku v databázi Scopus

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