Hydrogen-assisted subcritical crack growth rate in CR-MO steels

Shinji Konosu, Ryuji Uemori, Masao Yuga, Hiroshi Yamamoto

研究成果: 著書/レポートタイプへの貢献会議での発言

2 引用 (Scopus)

抄録

Hydrogen substantially reduces fracture properties such as threshold stress intensity factor KIH and tearing resistance dJ/da in conventional Cr-Mo steels. In order to enable the life assessment of a reactor with a hydrogen-induced crack using a failure assessment diagram (FAD), an experimental database of hydrogen-assisted subcritical crack growth rates da/dt is requisite. However, there are very few studies concerning the effects of hydrogen- and temper-embrittlement on da/dt at ambient temperatures in 2.25Cr-1Mo steels with high and low impurity levels. In this paper, vacuum melted lab heats of 2.25Cr-1Mo steel were supplied with compositional controls. Some specimens were embrittled by step cooling heat treatment (SCHT). Subcritical crack growth rate at a constant load was obtained by means of the potential drop method for 2.25Cr-1Mo steel with initial internal hydrogen (3.2 mass ppm).

元の言語英語
ホスト出版物のタイトルMaterials and Fabrication
出版者American Society of Mechanical Engineers (ASME)
ISBN(電子版)9780791846049
DOI
出版物ステータス出版済み - 1 1 2014
イベントASME 2014 Pressure Vessels and Piping Conference, PVP 2014 - Anaheim, 米国
継続期間: 7 20 20147 24 2014

出版物シリーズ

名前American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
6B
ISSN(印刷物)0277-027X

その他

その他ASME 2014 Pressure Vessels and Piping Conference, PVP 2014
米国
Anaheim
期間7/20/147/24/14

Fingerprint

Crack propagation
Hydrogen
Steel
Embrittlement
Stress intensity factors
Heat treatment
Vacuum
Impurities
Cooling
Cracks
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

これを引用

Konosu, S., Uemori, R., Yuga, M., & Yamamoto, H. (2014). Hydrogen-assisted subcritical crack growth rate in CR-MO steels. : Materials and Fabrication (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; 巻数 6B). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP2014-28720

Hydrogen-assisted subcritical crack growth rate in CR-MO steels. / Konosu, Shinji; Uemori, Ryuji; Yuga, Masao; Yamamoto, Hiroshi.

Materials and Fabrication. American Society of Mechanical Engineers (ASME), 2014. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; 巻 6B).

研究成果: 著書/レポートタイプへの貢献会議での発言

Konosu, S, Uemori, R, Yuga, M & Yamamoto, H 2014, Hydrogen-assisted subcritical crack growth rate in CR-MO steels. : Materials and Fabrication. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 巻. 6B, American Society of Mechanical Engineers (ASME), ASME 2014 Pressure Vessels and Piping Conference, PVP 2014, Anaheim, 米国, 7/20/14. https://doi.org/10.1115/PVP2014-28720
Konosu S, Uemori R, Yuga M, Yamamoto H. Hydrogen-assisted subcritical crack growth rate in CR-MO steels. : Materials and Fabrication. American Society of Mechanical Engineers (ASME). 2014. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP). https://doi.org/10.1115/PVP2014-28720
Konosu, Shinji ; Uemori, Ryuji ; Yuga, Masao ; Yamamoto, Hiroshi. / Hydrogen-assisted subcritical crack growth rate in CR-MO steels. Materials and Fabrication. American Society of Mechanical Engineers (ASME), 2014. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP).
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