Hydrogen trapping and fatigue crack growth property of low-carbon steel in hydrogen-gas environment

Junichiro Yamabe, Michio Yoshikawa, Hisao Matsunaga, Saburo Matsuoka

研究成果: Contribution to journalArticle査読

25 被引用数 (Scopus)

抄録

Fatigue crack growth (FCG) tests for compact-tension specimens of low-carbon steel were performed under various combinations of hydrogen pressures (0.1–90 MPa), test frequencies (0.001–10 Hz), and test temperatures (room temperature, 363 K, and 423 K). For quantifying the FCG acceleration, the hydrogen trapping and diffusivity of prestrained specimens were determined. Depending on the test conditions, the FCG was accelerated. The hydrogen-assisted FCG acceleration always accompanied localized plastic deformations near the crack tip. The onset of the FCG acceleration was roughly quantified by using a simplified parameter representing the gradient of the hydrogen concentration at the crack tip.

本文言語英語
ページ(範囲)202-213
ページ数12
ジャーナルInternational Journal of Fatigue
102
DOI
出版ステータス出版済み - 9 2017

All Science Journal Classification (ASJC) codes

  • モデリングとシミュレーション
  • 材料科学(全般)
  • 材料力学
  • 機械工学
  • 産業および生産工学

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