TEM analysis on the effect of hydrogen on cyclic deformation around an oblique fatigue crack tip in single-crystalline Fe-3.2wt.%Si alloy

Yoshimasa Takahashi, Junji Sakamoto, Masaki Tanaka, Kenji Higashida, Hiroshi Noguchi

Research output: Contribution to journal › Article › peer-review

Abstract

The effect of hydrogen on local cyclic behavior around an oblique fatigue crack tip in singlecrystalline Fe-3.2wt.%Si alloy is precisely investigated by using cross-sectional transmission electron microscopy (TEM). The observation successfully reveals that the crack propagation is strongly correlated to the formation of dislocation cell structure in an inert atmosphere, whereas no cell structure is formed around the crack tip in a hydrogen atmosphere.

Original languageEnglish
Pages (from-to)1002-1004
Number of pages3
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume76
Issue number767
DOIs
Publication statusPublished - Jul 2010
Externally publishedYes

Keywords

  • Crack propagation
  • Dislocation cell structures
  • Fatigue
  • Hydrogen
  • IronSilicon alloy
  • Single crystal
  • TEM

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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