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 2014 → 7 24 2014 |
出版物シリーズ
| 名前 | American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP |
|---|---|
| 巻 | 6B |
| ISSN（印刷物） | 0277-027X |
その他
| その他 | ASME 2014 Pressure Vessels and Piping Conference, PVP 2014 |
|---|---|
| 国 | 米国 |
| 市 | Anaheim |
| 期間 | 7/20/14 → 7/24/14 |
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All Science Journal Classification (ASJC) codes
- Mechanical Engineering
これを引用
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
}
TY - GEN
T1 - Hydrogen-assisted subcritical crack growth rate in CR-MO steels
AU - Konosu, Shinji
AU - Uemori, Ryuji
AU - Yuga, Masao
AU - Yamamoto, Hiroshi
PY - 2014/1/1
Y1 - 2014/1/1
N2 - 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).
AB - 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).
UR - http://www.scopus.com/inward/record.url?scp=84911957231&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84911957231&partnerID=8YFLogxK
U2 - 10.1115/PVP2014-28720
DO - 10.1115/PVP2014-28720
M3 - Conference contribution
AN - SCOPUS:84911957231
T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
BT - Materials and Fabrication
PB - American Society of Mechanical Engineers (ASME)
ER -