Effect of hydrogen on the creep of the ultrafine-grained zirconium Zr–1Nb alloy at 673 K

G. P. Grabovetskaya, E. N. Stepanova, A. S. Dubrovskaya

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Comparative studies of the effect of hydrogenation to concentrations of 0.33 wt% on the behavior of the creep of Zr–1wt% Nb (hereinafter Zr–1Nb) alloy in fine-grained (dav = 4 μm) and ultrafine-grained (dav = 0.45 μm) states are performed for the creep rates in the interval 10−7–10−5 s−1 at a temperature of 673 K. Hydrogenation to concentration of 0.33 wt% is found to lead to a decrease in the steady creep rate and increase in the time to failure with simultaneous decrease in the value of deformation to failure. Possible mechanisms of deformation of the ultrafine-grained alloy under examined creep conditions are discussed.

Original languageEnglish
Pages (from-to)22633-22640
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number35
DOIs
Publication statusPublished - 31 Aug 2017

Keywords

  • Creep
  • Hydrogen
  • Ultrafine-grained structure
  • Zirconium alloy

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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