High-temperature creep and superplasticity in zirconium alloys

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High-temperature creep and superplasticity in zirconium alloys

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Publication Article, peer reviewed scientific
Title High-temperature creep and superplasticity in zirconium alloys
Author(s) Massih, Ali
Date 2013
English abstract
High-temperature (≈ 900−1400 K) steady-state creep test data on as-received zirconium alloys, Zr-1wt%Nb and Zircaloy-4 used as fuel cladding materials in light water reactors are evaluated by employing two sets of models. In particular, the focus of the paper is on the former alloy and in the two-phase coexistence region, i.e. the (α+β)-domain of the alloy. In one modeling approach, the constitutive relations for the two single phase regions (α and β) are combined through a phase transition kinetic model and a phase mixing rule; in another, a superplasticity model is used directly to calculate the creep deformation rate as a function of stress and temperature in the (α+β)-domain. The results show that the former approach is inadequate in retrodicting the experimental data, while the latter one gives a fair overall agreement. The paper describes the details of the models, the data, and derivations of the constitutive laws.
DOI http://dx.doi.org/10.1080/00223131.2013.750054 (link to publisher's fulltext)
Publisher Taylor & Francis
Host/Issue Journal of Nuclear Science and Technology;1
Volume 50
ISSN 1881-1248
Pages 21-34
Language eng (iso)
Subject(s) high-temperature creep
zirconium alloys
Research Subject Categories::TECHNOLOGY
Handle http://hdl.handle.net/2043/14830 (link to this page)

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