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

Shinji Konosu, Ryuji Uemori, Masao Yuga, Hiroshi Yamamoto

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

2 被引用数 (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).

本文言語英語
ホスト出版物のタイトルMaterials and Fabrication
出版社American Society of Mechanical Engineers (ASME)
ISBN(電子版)9780791846049
DOI
出版ステータス出版済み - 2014
外部発表はい
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(印刷版)0277-027X

その他

その他ASME 2014 Pressure Vessels and Piping Conference, PVP 2014
Country米国
CityAnaheim
Period7/20/147/24/14

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

フィンガープリント 「Hydrogen-assisted subcritical crack growth rate in CR-MO steels」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル