STP939

    Study by Thermoelectric Power Measurements of Recovery and Recrystallization of Cold-Rolled Zircaloy-4 Sheets

    Published: Jan 1987


      Format Pages Price  
    PDF (284K) 22 $25   ADD TO CART
    Complete Source PDF (18M) 22 $121   ADD TO CART


    Abstract

    The microstructural evolution of cold-rolled Zircaloy-4 sheets during agaings at temperatures from the ambient up to 700°C is studied by thermoelectric power (TEP) measurements. The analysis of various factors having an influence on TEP of Zircaloy shows that this technique is well suited to the study of recovery and recrystallization. It is shown that, in the temperature range 450 to 700°C, carbon has a retarding influence on recovery as well as on recrystallization. The activation energy of recrystallization increases with carbon content, and the effect of this element seems to be identical to that of other interstitials such as oxygen. Measurements show that TEP of freshly cold-rolled Zircaloy-4 sheets vary during agings from the ambient up to 300°C. This evolution is composed of two stages corresponding to the formation of atmospheres of interstitial solutes around dislocations and to the formation of oxygen clusters on dislocation nodes.

    Keywords:

    Zircaloy-4, recovery, recrystallization, thermoelectric power, strain ageing, solute-dislocation interactions


    Author Information:

    Merle, P
    Groupes d'Etudes de Métallurgie Physique et Physique des Matériaux - L.A. 341 - I.N.S.A. de Lyon, Villeurbanne Cedex,

    Vauglin, C
    Groupes d'Etudes de Métallurgie Physique et Physique des Matériaux - L.A. 341 - I.N.S.A. de Lyon, Villeurbanne Cedex,

    Fantozzi, G
    Groupes d'Etudes de Métallurgie Physique et Physique des Matériaux - L.A. 341 - I.N.S.A. de Lyon, Villeurbanne Cedex,

    Derep, JL
    ETCA, Arcueil,

    Charquet, D
    CEZUS, Ugine,


    Paper ID: STP28144S

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP28144S


    CrossRef ASTM International is a member of CrossRef.