Avrami exponents for transformations producing anisotropic particles

Michael C. Weinberg, Dunbar P. Birnie

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Abstract

The behavior of Avrami exponents (AE) for systems which produce anisotropic particles (for which shielding effects and phantoms occur) is examined. Probabilistic arguments used in previous studies are applied to derive expressions for the AE as a function of time or the extent of transformation. Numerical calculations for the one dimensional (1D) cases of site saturation and continuous nucleation show that blocking effects produce a minimum in plots of AE versus extent of transformation. The influence of growth rate anisotropy upon the magnitude of the reduction in the AE is also examined and certain features of the behavior of the AE for 2D and 3D systems are discussed.

Original languageEnglish (US)
Pages (from-to)290-296
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume202
Issue number3
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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