You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Creep Behavior of Zircaloy Cladding Under Variable Conditions


      Format Pages Price  
    PDF (220K) 14 $25   ADD TO CART
    Complete Source PDF (19M) 772 $148   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Various creep tests of Zircaloy cladding tubes under variable conditions were conducted to investigate which hardening rule can be applicable for the creep behavior associated with condition changes. The results show that the strain-hardening rule is applicable in general when either the stress or temperature conditions change, provided that a certain amount of creep strain recovery is observed in case of stress drop. In stress reversal conditions, however, “softening” of the material was observed. Strain rate after stress reversal is much higher than that predicted by the strain-hardening rule. Tn this case, the modified strainhardening model, considering a recoverable creep-hardening range together with the strain recovery, predicts the creep behavior well. The applicability of the model is ascertained through a verification test that includes stress reversal, strain recovery, stress changes, and temperature changes.


    Zircaloy cladding, creep, creep-hardening, strain recovery, constitutive equation

    Author Information:

    Matsuo, Y
    Senior researcher, Central Research Institute, Mitsubishi Metal Corporation, Omiya, Saitama,

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP18893S