Microscopic study on the effect of hydrogen on deformation process near stage II fatigue crack tip

Y. Takahashi, Masaki Tanaka, K. 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 mass%Si alloy. The fracture surface and the neartip 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)[11̄1]/(11̄2)[1̄11] pair) is operative in helium atmosphere. On the other hand, other types of slip system ((011)[11̄1]/(101)[1̄11]/(1̄01)[11̄1]/(01̄1)[1̄11] pair) are also found to be operative and the slip is localized around the close vicinity of the crack in hydrogen atmosphere.

Original languageEnglish
Title of host publication12th International Conference on Fracture 2009, ICF-12
Pages2793-2800
Number of pages8
Volume4
Publication statusPublished - 2009
Event12th International Conference on Fracture 2009, ICF-12 - Ottawa, ON, Canada
Duration: Jul 12 2009Jul 17 2009

Other

Other12th International Conference on Fracture 2009, ICF-12
CountryCanada
CityOttawa, ON
Period7/12/097/17/09

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

Fingerprint Dive into the research topics of 'Microscopic study on the effect of hydrogen on 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). Microscopic study on the effect of hydrogen on deformation process near stage II fatigue crack tip. In 12th International Conference on Fracture 2009, ICF-12 (Vol. 4, pp. 2793-2800)