Avrami exponent under transient and heterogeneous nucleation transformation conditions

  title={Avrami exponent under transient and heterogeneous nucleation transformation conditions},
  author={I. Sinha and Rajiv Kumar Mandal},
  journal={Journal of Non-crystalline Solids},
  • I. Sinha, R. Mandal
  • Published 1 October 2010
  • Materials Science, Physics
  • Journal of Non-crystalline Solids
Abstract The Kolmogorov–Johnson–Mehl–Avrami model for isothermal transformation kinetics is universal under specific assumptions. However, the experimental Avrami exponent deviates from the universal value. In this context, we study the effect of transient heterogeneous nucleation on the Avrami exponent for bulk materials and also for transformations leading to nanostructured materials. All transformations are assumed to be polymorphic. A discrete version of the KJMA model is modified for this… 
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