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

Guangfu Li, Tetsuo Shoji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationMechanics and Material Engineering for Science and Experiments
EditorsY. Zhou, Y. Ghu, Z. Li, Y. Zhou, Y. Gu, Z. Li
Pages466-469
Number of pages4
Publication statusPublished - 2003 Oct 17
EventProceedings of the International Symposium of Young Scholars on Mechanics and Material Engineering for Science and Experiments - Changsha/Zhangjiajie, China
Duration: 2001 Aug 112001 Aug 16

Publication series

NameMechanics 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
CountryChina
CityChangsha/Zhangjiajie
Period01/8/1101/8/16

Keywords

  • Crack tip strain rate
  • Nuclear reactor
  • Stainless steel
  • Stress corrosion cracking
  • Yield strength

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanical Engineering

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