Using small punch testing method for the analysis of creep behaviour of Al-Al4C3 composites

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F10%3A00354339" target="_blank" >RIV/68081723:_____/10:00354339 - 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
Using small punch testing method for the analysis of creep behaviour of Al-Al4C3 composites
Original language description
Mechanical alloying and mechanical attrition are both processes based on the imparting of a severe plastic deformation using high-energy ball mills. The experimental material, dispersion strengthened aluminium with Al4C3 particles, was prepared by mechanical alloying of aluminium powder (<50 ?m) with different types of carbon. Creep behaviour of the composite, based on aluminium matrix, reinforced by 4 vol% Al4C3, was studied at temperatures from 623 to 723 K by small punch testing with a constant force. The time dependence of the central deflection was registered and the minimum deflection rate was determined. The dependence of this quantity on the applied force can be described by a power function with relatively high value of the power. The dependence can be rationalized by an analysis in terms of the threshold concept. Analytical procedure for comparison of the threshold force in small punch experiments and threshold stress in conventional creep testing are given.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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