Effect of pre-hydriding on the burst behavior of the zirconium gadding under loss-of-cooiant accident condition

Do Wan Lim, Dong Jun Park, Jeong Yong Park, Ho Jang, Jong Sung Yoo, Yong Kyoon Mok, Jung Min Suh, Kang Moon Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

To investigate the effects of hydrogen on the rupture behavior and mechanical property of ballooned-zirconium cladding after a loss-of-coolant accident, simulated loss-of-coolant-accident tests were carried out using pressurized-zirconium-tube samples with and without hydrogen pre-charging. A prehydrided cladding sample showed lower deformation in the ballooned area and lower rupture temperature than the as-received cladding sample. Ballooned cladding without hydrogen charging showed no significant difference in mechanical property, in spite of a wide range of values for circumferential strain and of a different balloon shape caused by a different heating rate. Pre-hydrided cladding, however, showed an increase in maximum load with increasing heating-rate. The strong relationship between hydrogen content and burst behavior during the loss-of-coolant accident was analyzed and the mechanism by which hydrogen hardens zirconium alloy was explained.

Original languageEnglish
Pages (from-to)493-502
Number of pages10
JournalJournal of Korean Institute of Metals and Materials
Volume52
Issue number7
DOIs
Publication statusPublished - 2014 Jan 1

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Modelling and Simulation

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