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The influence of ECAP on the small punch creep of Al-4 vol.% Al4C3 composite
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SYSNO ASEP 0348495 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The influence of ECAP on the small punch creep of Al-4 vol.% Al4C3 composite Author(s) Dobeš, Ferdinand (UFM-A) RID, ORCID
Milička, Karel (UFM-A)
Besterci, M. (SK)
Kvačkaj, T. (SK)Number of authors 4 Source Title Journal of Materials Science. - : Springer - ISSN 0022-2461
Roč. 45, č. 19 (2010), s. 5171-5176Number of pages 6 s. Language eng - English Country US - United States Keywords equal channel angular pressing ; extrusion ; creep ; metal-matrix composite Subject RIV JI - Composite Materials R&D Projects 1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000280597600005 DOI 10.1007/s10853-010-4554-9 Annotation The creep behaviour of a composite based on an aluminium matrix reinforced by 4 vol.% Al4C3 was studied at temperatures of 623 and 723 K by small punch testing with a constant force. The composite was tested in two different states: (i) as received by mechanical alloying with hot extrusion (HE) as the final operation and (ii) with equal channel angular pressing (ECAP) superimposed on the hot-extruded material. The ECAP does not improve the observed creep resistance. The reduction of force leading to the same deflection rate is not very significant. This points out that the ECAP process of the present composite, which produces substantial strengthening at lower temperatures, is not accompanied by pronounced weakening of creep resistance at elevated temperatures. The threshold force in the ECAP material is about 5 N weaker than in the HE material. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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