Modeling of hydrogen diffusion process at a blunt notch in zirconium

Xingqiao Ma, San-Qiang Shi, Senyang Hu, Chungho Woo, Longqing Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

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

Keywords

  • Diffusion
  • Hydrogen
  • Non-uniform applied stress
  • Phase-field
  • Zirconium

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials
  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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