Modeling of hydrogen diffusion process at a blunt notch in zirconium

Xingqiao Ma, Sanqiang Shi, Senyang Hu, Chungho Woo, Long-qing Chen

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

The two-dimensional diffusion of interstitial hydrogen atoms in zirconium in a non-uniform stress field was simulated using the phase-field method. The interaction between hydrogen interstitials and the stress field was described by Khachaturyan's elastic theory. The Cahn-Hilliard diffusion equation was then solved by an explicit finite difference method. The result shows that hydrogen atoms diffuse to the high-tensile hydrostatic region near the tip of the notch. The content of hydrogen near the tip of the notch increases by 13%, while the stress distribution caused by hydrogen interstitials around the notch is modified by only 0.7%.

Original languageEnglish (US)
Pages (from-to)416-421
Number of pages6
JournalJournal of University of Science and Technology Beijing: Mineral Metallurgy Materials (Eng Ed)
Volume12
Issue number5
StatePublished - Oct 1 2005

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials
  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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