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 language | English |
|---|---|
| Pages (from-to) | 416-421 |
| Number of pages | 6 |
| Journal | Journal of University of Science and Technology Beijing: Mineral Metallurgy Materials (Eng Ed) |
| Volume | 12 |
| Issue number | 5 |
| Publication status | Published - 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