Anomalous high temperature creep behaviour of an Al-8.5Fe-1.3V-1.7Si (8009Al type) alloy reinforced with alumina short fibres.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F04%3A07043006" target="_blank" >RIV/68081723:_____/04:07043006 - 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

Anomalous high temperature creep behaviour of an Al-8.5Fe-1.3V-1.7Si (8009Al type) alloy reinforced with alumina short fibres.

Original language description

Creep in an Al-8.5Fe-1.3V-1.7Si (8009Al type) alloy dispersion strengthened with fine Al-12(Fe,V)(3)Si phase particles at temperatures 798-848 K is not associated with a true threshold and the same holds for the Alloy reinforced with alumina short fibres. While the true activation energy of creep in the Alloy is higher than the activation enthalpy of lattice self-diffusion in aluminium due to the energy of athermal detachment of dislocations from dispersed particles, this is not the case of the Composite. The true activation energy of creep in the latter is anomalously low and the creep behaviour cannot be described by the creep equation that holds for the Alloy, but contains the factor by which the flow stress in the dispersion strengthened matrix isreduced due to load transfer. Nevertheless, the creep strength of the Composite is, at the certain conditions at least, by a factor up to six orders of magnitude higher than that of the Alloy. This creep strength increment due to alumina

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

JI - Composite 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

2004

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

42

Issue of the periodical within the volume

1

Country of publishing house

SK - SLOVAKIA

Number of pages

11

Pages from-to

9-20

UT code for WoS article

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EID of the result in the Scopus database

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