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 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 (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

Fingerprint

notches
Zirconium
stress distribution
Hydrogen
interstitials
hydrogen
hydrogen atoms
modeling
stress field
hydrostatics
Atoms
field method
finite difference method
Finite difference method
Stress concentration
interactions

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

Cite this

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title = "Modeling of hydrogen diffusion process at a blunt notch in zirconium",
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{\%}.",
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Modeling of hydrogen diffusion process at a blunt notch in zirconium. / Ma, Xingqiao; Shi, Sanqiang; Hu, Senyang; Woo, Chungho; Chen, Long-qing.

In: Journal of University of Science and Technology Beijing: Mineral Metallurgy Materials (Eng Ed), Vol. 12, No. 5, 01.10.2005, p. 416-421.

Research output: Contribution to journalArticle

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AU - Ma, Xingqiao

AU - Shi, Sanqiang

AU - Hu, Senyang

AU - Woo, Chungho

AU - Chen, Long-qing

PY - 2005/10/1

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N2 - 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%.

AB - 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%.

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