Effect of hydrogen on microscopic deformation process near stage II fatigue crack tip

Yoshimasa Takahashi, Masaki Tanaka, Kenji Higashida, Hiroshi Noguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effect of hydrogen on the crack tip cyclic slip deformation is investigated using a single-crystalline Fe-3.2%Si alloy. The fracture surface and the near-tip cross-section are observed in detail by SEM and TEM respectively. The cyclic slip-off process by a pair of symmetrical slip system about the crack ((11̄2̄)[11̄1̄] / (11̄2)[1̄11] pair) is operative in the non-hydrogen atmosphere. On the other hand, other pairs of slip system ((011)[11̄1] / (101)[1̄11] pair and (1̄01)[11̄1] / (01̄1)[1̄11] pair) are also found to be operative and slip is localized around the vicinity of the crack in the hydrogen atmosphere.

Original languageEnglish
Title of host publicationProceedings of the 2008 International Hydrogen Conference - Effects of Hydrogen on Materials
Pages203-210
Number of pages8
Publication statusPublished - Dec 1 2009
Event2008 International Hydrogen Conference - Effects of Hydrogen on Materials - Jackson, WY, United States
Duration: Sep 7 2008Sep 10 2008

Publication series

NameProceedings of the 2008 International Hydrogen Conference - Effects of Hydrogen on Materials

Other

Other2008 International Hydrogen Conference - Effects of Hydrogen on Materials
CountryUnited States
CityJackson, WY
Period9/7/089/10/08

All Science Journal Classification (ASJC) codes

  • Materials Chemistry
  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Effect of hydrogen on microscopic deformation process near stage II fatigue crack tip'. Together they form a unique fingerprint.

  • Cite this

    Takahashi, Y., Tanaka, M., Higashida, K., & Noguchi, H. (2009). Effect of hydrogen on microscopic deformation process near stage II fatigue crack tip. In Proceedings of the 2008 International Hydrogen Conference - Effects of Hydrogen on Materials (pp. 203-210). (Proceedings of the 2008 International Hydrogen Conference - Effects of Hydrogen on Materials).