Počet záznamů: 1

Creep of Fe-18Al-4Cr alloy with zirconium addition

  1. 1.
    0348501 - UFM-A 2011 RIV GB eng J - Článek v odborném periodiku
    Dobeš, Ferdinand - Pešička, J. - Kratochvíl, P.
    Creep of Fe-18Al-4Cr alloy with zirconium addition.
    Intermetallics. Roč. 18, č. 7 (2010), s. 1353-1356 ISSN 0966-9795.
    [Discussion Meeting on the Development of Innovative Iron Aluminium Alloys /5./. Praha, 21.09.2009-24.09.2009]
    Grant CEP: GA ČR GA106/08/1238
    Výzkumný záměr: CEZ:AV0Z20410507
    Klíčová slova: Iron aluminides * creep
    Kód oboru RIV: JG - Hutnictví, kovové materiály
    Impakt faktor: 2.327, rok: 2010

    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.
    Trvalý link: http://hdl.handle.net/11104/0189026