A mesoscopic model of dissolution/disintegration of nanocrystalline metals via vacancy diffusion along grain boundaries

L. Klinger, I. Gotman, E. Rabkin

Research output: Contribution to journalArticlepeer-review

Abstract

We propose a model describing the growth of a two-dimensional subsurface pore induced by vacancy supersaturation on the surface of a polycrystal. We demonstrate that the pore develops narrow slits propagating along the grain boundaries which may lead to disintegration of nanocrystalline metal by grain detachment. Analytic models describing initial and final (on the verge of grain detachment) stages of pore growth are proposed. The models' predictions are in good agreement with the numerical simulation results.

Original languageEnglish
Pages (from-to)37-42
Number of pages6
JournalComputational Materials Science
Volume76
DOIs
StatePublished - 2013

Keywords

  • Corrosion
  • Grain boundary diffusion
  • Nanocrystalline metals
  • Oxidation
  • Surface diffusion

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Mechanics of Materials
  • Computational Mathematics
  • General Computer Science
  • General Materials Science
  • General Physics and Astronomy

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