Creep of ODS Copper in Two Distinctly Different Temperature Intervals as Interpreted in Terms of the True Threshold Stress.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F02%3A07023100" target="_blank" >RIV/68081723:_____/02:07023100 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Creep of ODS Copper in Two Distinctly Different Temperature Intervals as Interpreted in Terms of the True Threshold Stress.

Original language description

The creep data for copper strengthened with fine alumina particles - a commercial GlidCop Al-15 alloy, presented by Broyles et al. - are interpreted in terms of the true threshold stress. It is shown that at high testing temperatures 973 and 998 K the minimum creep strain rate is apparently controlled by lattice self-diffusion in the alloy matrix - copper - and that the true stress exponent of minimum creep strain rate is very close to that reported for copper, i.e. close to 5. At much lower testing temperatures of 748 and 773 K, the minimum creep strain rate is found to be controlled by the dislocation core diffusion in copper, and, accordingly, the true stress exponent of minimum creep strain rate is close to 7. The creep data available for these twotemperatures made it possible to prove that the apparent activation energy of creep is much higher than the activation enthalpy of dislocation core diffusion, which is essentially due to the temperature dependence of the true threshold s

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

<a href="/en/project/IBS2041001" target="_blank" >IBS2041001: Degradation of properties and lifetime assessment of engineering materials under mechanical loading</a><br>

Continuities

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

Publication year

2002

Confidentiality

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

Name of the periodical

KOVOVÉ MATERIÁLY

ISSN

0023-432X

e-ISSN

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Volume of the periodical

40

Issue of the periodical within the volume

4

Country of publishing house

SK - SLOVAKIA

Number of pages

11

Pages from-to

231-241

UT code for WoS article

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EID of the result in the Scopus database

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