2020年11月
Hydrogen-assisted, intergranular, fatigue crack-growth in ferritic iron: Influences of hydrogen-gas pressure and temperature variation
International Journal of Fatigue
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- 巻
- 140
- 号
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.ijfatigue.2020.105806
© 2020 Elsevier Ltd Hydrogen-assisted, fatigue crack-growth in pure iron within a low stress-intensity range was ascribed to the emergence of intergranular fracture, the significance of which was emphasized by increased hydrogen-gas pressure, while conversely mitigated by an elevation of test temperature. Based on conventional thermodynamic theory, a single parameter, GB hydrogen-coverage (θx), was used to derive a systematic, unified evaluation of such a complex reliance on the dual environmental variables. Furthermore, post-mortem microscopic analyses of the crack-wake deformation microstructures were employed to elucidate the contribution of dislocation activity regarding the triggering of IG fracture, which also varied significantly with the alteration of θx.
- リンク情報
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- DOI
- https://doi.org/10.1016/j.ijfatigue.2020.105806
- 共同研究・競争的資金等の研究課題
- 水素-転位間相互作用に立脚したBCC鋼中の水素誘起疲労き裂伝播機構の包括的解明
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85087591379&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85087591379&origin=inward
- ID情報
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- DOI : 10.1016/j.ijfatigue.2020.105806
- ISSN : 0142-1123
- SCOPUS ID : 85087591379