Creep in copper dispersion strengthened with alumina particles (ODS copper).

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F03%3A07033036" target="_blank" >RIV/68081723:_____/03:07033036 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Creep in copper dispersion strengthened with alumina particles (ODS copper).

Original language description

The creep behaviour of ODS copper is investigated in two distinctly different temperature intervals. In both intervals creep exhibits threshold behaviour; the true threshold stress decreases with increasing temperature. In the lower temperature interval(673ů773 K) the creep strain rate is dislocation core diffusion controlled and the true stress exponent is close to 7. In the higher temperature interval (923ů1023 K) creep is controlled by the lattice self-diffusion and the true stress exponent is closeto 5. In both temperature intervals the apparent activation energies are much higher than the respective activation enthalpies of diffusion, i.e. the true activation energies of creep, and the apparent stress exponents are much higher than the respective true stress exponents. The differences of apparent and true activation energies are fully explained by the observed temperature dependences of the true threshold stresses. The differences between the apparent and the true stress exponen

Czech name

—

Czech description

—

Type

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

CEP classification

JI - Composite materials

OECD FORD branch

—

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

2003

Confidentiality

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

Name of the periodical

Materials Science and Engineering A. A

ISSN

0921-5093

e-ISSN

—

Volume of the periodical

348

Issue of the periodical within the volume

1-2

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

170-179

UT code for WoS article

—

EID of the result in the Scopus database

—