To main content

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

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.
Read the publication

Category

Academic article

Language

English

Author(s)

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

Affiliation

  • SINTEF Industry / Sustainable Energy Technology
  • University of Oslo
  • Fukuoka University
  • Kyushu University

Year

2019

Published in

Materials Science & Engineering: A

ISSN

0921-5093

Volume

756

Page(s)

396 - 404

View this publication at Norwegian Research Information Repository