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

X. Q. Ma, San-Qiang Shi, C. H. Woo, L. Q. Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)

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
Pages (from-to)283-290
Number of pages8
JournalComputational Materials Science
Volume23
Issue number1-4
DOIs
Publication statusPublished - 1 Apr 2002

ASJC Scopus subject areas

  • Materials Science(all)

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