Long-range ordering in B2 FeAl: A resistometric study

Hubert Lang, K Rohrhofer, Peter Rosenkranz, Rafal Kozubski, Wolfgang Püschl, Wolfgang Pfeiler

    Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed

    Abstract

    Changes in the degree of order have been studied by residual electrical resistivity measurement (REST) in B2 long-range ordered Fe-44.8 at.% Al during isochronal and isothermal step-annealing temperature treatment. Restricted atomic mobility starts already below about 500 K. Assuming the vacancy concentration to remain constant over an extended temperature range, as known from the literature, the complicated variations of resistivity with temperature can be explained by two regimes of ordering: a fast local ordering due to the restricted motion of the vacancies at low temperatures and a very slow global adjustment of long-range order (LRO) within the total sample volume. Kinetic parameters are determined from the detailed process analysis of the ordering kinetics during isothermal small-step annealing. Using these parameters, the results of isochronal annealing treatment can be calculated with a very good correspondence to experiment. Œ 2002 Elsevier Science Ltd. All rights reserved.
    OriginalspracheEnglisch
    Seiten (von - bis)283-292
    Seitenumfang10
    FachzeitschriftIntermetallics
    Jahrgang10
    Ausgabenummer3
    DOIs
    PublikationsstatusVeröffentlicht - 2002

    ÖFOS 2012

    • 1030 Physik, Astronomie

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