Effect of applied load on nucleation and growth of γ-hydrides in zirconium

X. Q. Ma, S. Q. Shi, C. H. Woo, Long-qing Chen

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

γ-hydride precipitation and growth in zirconium were investigated by using a phase-field kinetic model. The orientation difference of hydride is represented by non-conservative structural field variables, whereas the concentration difference of hydrogen in precipitates and matrix is described by a conserved field variable. The temporal evolution of the spatially dependent field variables is determined by numerically solving the time-dependent Ginzburg-Landau equations for the structural variables and the Cahn-Hilliard diffusion equation for the concentration variable. It is demonstrated that a certain load level is required to completely re-orient hydride precipitates and it is most effective to apply loads during the initial nucleation stage for producing anisotropic precipitate alignment.

Original languageEnglish (US)
Pages (from-to)283-290
Number of pages8
JournalComputational Materials Science
Volume23
Issue number1-4
DOIs
StatePublished - Apr 1 2002

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Computational Mathematics

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