Hydrogen-assisted crack propagation in α-iron during elasto-plastic fracture toughness tests

Domas Birenis, Yuhei Ogawa, Hisao Matsunaga, Osamu Takakuwa, Junichiro Yamabe, Øystein Prytz, Annett Thøgersen

Research output: Contribution to journalArticle

Abstract

Elasto-plastic fracture toughness tests of a commercially pure iron were performed in air and in hydrogen gas at two different pressures. Some unique characteristics of hydrogen-enhanced cracking were exhibited at both the macroscopic and microscopic length scales, based on the observation of fracture surface, fracture plane, plasticity distribution and dislocation structure. The possible mechanisms responsible for the hydrogen-induced degradation of fracture toughness are discussed.

Original languageEnglish
Pages (from-to)396-404
Number of pages9
JournalMaterials Science and Engineering A
Volume756
DOIs
Publication statusPublished - May 22 2019

Fingerprint

crack propagation
fracture strength
Fracture toughness
Hydrogen
Crack propagation
plastics
Iron
Plastics
iron
hydrogen
plastic properties
Plasticity
Gases
degradation
Degradation
air
Air
gases

All Science Journal Classification (ASJC) codes

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

Cite this

Hydrogen-assisted crack propagation in α-iron during elasto-plastic fracture toughness tests. / Birenis, Domas; Ogawa, Yuhei; Matsunaga, Hisao; Takakuwa, Osamu; Yamabe, Junichiro; Prytz, Øystein; Thøgersen, Annett.

In: Materials Science and Engineering A, Vol. 756, 22.05.2019, p. 396-404.

Research output: Contribution to journalArticle

Birenis, Domas ; Ogawa, Yuhei ; Matsunaga, Hisao ; Takakuwa, Osamu ; Yamabe, Junichiro ; Prytz, Øystein ; Thøgersen, Annett. / Hydrogen-assisted crack propagation in α-iron during elasto-plastic fracture toughness tests. In: Materials Science and Engineering A. 2019 ; Vol. 756. pp. 396-404.
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