Únavové chování a charakteristiky poškození ultrajemnozrnné mědi nízké čistoty zpracované metodou ECAP

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F08%3A00308804" target="_blank" >RIV/68081723:_____/08:00308804 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26210/07:PU72653

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Fatigue behavior and damage characteristic of ultra-fine grain low-purity copper processed by equal-channel angular pressing (ECAP)

Popis výsledku v původním jazyce

The S-N and Manson Coffin plot, cyclic stress-strain response, changes of microstructure, and the surface morphology of UFG low-purity copper processed by ECAP were determined. The formation of shear bands was discussed in detail. The results show that the UFG Cu exhibits longer lifetime under stress-controlled fatigue, but lower fatigue resistance under strain controlled fatigue when compared to the coarse grain counterpart. Cyclic stress-strain responses of UFG Cu under stress-controlled fatigue alterfrom cyclic softening to cyclic hardening as stress amplitude decreases. The responses always show cyclic softening under strain-controlled fatigue. By EBSD and TEM the shear bands were observed on the surface and no grain coarsening was discovered nearthe shear bands, which indicates that there is no relationship between formation of shear bands and cyclic softening/grain coarsening

Název v anglickém jazyce

Fatigue behavior and damage characteristic of ultra-fine grain low-purity copper processed by equal-channel angular pressing (ECAP)

Popis výsledku anglicky

The S-N and Manson Coffin plot, cyclic stress-strain response, changes of microstructure, and the surface morphology of UFG low-purity copper processed by ECAP were determined. The formation of shear bands was discussed in detail. The results show that the UFG Cu exhibits longer lifetime under stress-controlled fatigue, but lower fatigue resistance under strain controlled fatigue when compared to the coarse grain counterpart. Cyclic stress-strain responses of UFG Cu under stress-controlled fatigue alterfrom cyclic softening to cyclic hardening as stress amplitude decreases. The responses always show cyclic softening under strain-controlled fatigue. By EBSD and TEM the shear bands were observed on the surface and no grain coarsening was discovered nearthe shear bands, which indicates that there is no relationship between formation of shear bands and cyclic softening/grain coarsening

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

<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)<br>V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A: Structural materials

ISSN

0921-5093

e-ISSN

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Svazek periodika

475

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

249-256

Kód UT WoS článku

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EID výsledku v databázi Scopus

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