Crystal plasticity simulation considering oxidation along grain boundary and effect of grain size on stress corrosion cracking

Yoshiteru Aoyagi, Yoshiyuki Kaji

Research output: Contribution to journalReview articlepeer-review

5 Citations (Scopus)

Abstract

Stress corrosion cracking is a critical concern for light water reactors because it can degrade structural components over a long period. It takes the form of intergranular stress corrosion cracking (IGSCC). Many studies on IGSCC have been conducted over several decades in the past. However, the mechanism of IGSCC initiation and propagation is still not fully understood. In this study, a crystal plasticity model expressing IGSCC is proposed by considering information about the oxidation along the grain boundaries and the failure of an oxide film caused by the localization of a deformation. From a crystal plasticity finite element analysis and an oxygen reaction-diffusion finite difference analysis based on the presented model, the IGSCC is numerically reproduced, and we discuss the effect of grain size on the crack propagation behavior.

Original languageEnglish
Pages (from-to)161-166
Number of pages6
JournalMaterials Transactions
Volume53
Issue number1
DOIs
Publication statusPublished - 2012

Keywords

  • Crack propagation
  • Crystal plasticity
  • Grain boundary
  • Grain size
  • Intergranular stress corrosion cracking
  • Oxygen reaction-diffusion equation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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