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Creep of Fe-18Al-4Cr alloy with zirconium addition
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SYSNO ASEP 0348501 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Creep of Fe-18Al-4Cr alloy with zirconium addition Author(s) Dobeš, Ferdinand (UFM-A) RID, ORCID
Pešička, J. (CZ)
Kratochvíl, P. (CZ)Number of authors 3 Source Title Intermetallics. - : Elsevier - ISSN 0966-9795
Roč. 18, č. 7 (2010), s. 1353-1356Number of pages 4 s. Action Discussion Meeting on the Development of Innovative Iron Aluminium Alloys /5./ Event date 21.09.2009-24.09.2009 VEvent location Praha Country CZ - Czech Republic Event type WRD Language eng - English Country GB - United Kingdom Keywords Iron aluminides ; creep Subject RIV JG - Metallurgy R&D Projects GA106/08/1238 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000279568600019 DOI 10.1016/j.intermet.2009.12.024 Annotation The creep behaviour of a rolled Fe–Al alloy containing (at. %) 17.3 Al, 3.81 Cr, 0.29 Zr and 0.13 C was examined at temperatures ranging from 550 °C to 700 °C. The applied stress dependence of the creep rate at a given temperature could be described by the power function. The values of the power n decreased with increasing temperature: n equalled nearly 8 at 550 °C and was nearly 6 at 700 °C. The apparent activation energy of creep was found to be 460 kJ/mol at 50 MPa. Three types of particles were observed: coarse particles were identified by XRD as being (Fe,Al)2Zr with cubic symmetry, whereas middle- and small-sized particles were analysed to be zirconium carbides with cubic symmetry. The sensitivity of the creep rate to the regime of heat treatment was ascribed to the growth of carbide precipitates. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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