Quantitative evaluation of hardening effect on crack growth rate in high temperature water for light water reactors

Guangfu Li, Tetsuo Shoji

研究成果: Conference contribution

抄録

Quantitative prediction of stress corrosion cracking (SCC) susceptibility and effects of key factors is critical for safe operation and lifetime management of light water reactors. In the present work, the effect of hardening on SCC of stainless steels in high temperature water environments was evaluated experimentally and theoretically for understanding irradiation assisted SCC (IASCC) and cold-work enhanced SCC. In the experiment, mill-annealed Type 304 steels were warm-forged to different yield strength levels and tested in simulated boiling water reactor (BWR) environment. Results showed that the specimen with higher yield strength exhibited higher SCC crack growth rate. Theoretical formulas relating crack tip strain rate and SCC crack growth rate to yield strength were derived, which indicate quantitatively that higher yield strength causes higher strain rate at SCC crack tip and so higher crack growth rate. The theoretical and experimental results are consistent.

本文言語English
ホスト出版物のタイトルMechanics and Material Engineering for Science and Experiments
編集者Y. Zhou, Y. Ghu, Z. Li, Y. Zhou, Y. Gu, Z. Li
ページ466-469
ページ数4
出版ステータスPublished - 2003 10 17
イベントProceedings of the International Symposium of Young Scholars on Mechanics and Material Engineering for Science and Experiments - Changsha/Zhangjiajie, China
継続期間: 2001 8 112001 8 16

出版物シリーズ

名前Mechanics and Material Engineering for Science and Experiments

Other

OtherProceedings of the International Symposium of Young Scholars on Mechanics and Material Engineering for Science and Experiments
国/地域China
CityChangsha/Zhangjiajie
Period01/8/1101/8/16

ASJC Scopus subject areas

  • 材料科学(全般)
  • 機械工学

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