Effects of electrochemical potential on crack growth rate of 316L weld haz and weld metal in 288°C pure water

Zhanpeng Lu, Tetsuo Shoji, Yoichi Takeda, Yuzuru Ito, Akira Kai, Nobuhisa Tsuchiya

研究成果: Conference contribution

4 引用 (Scopus)

抜粋

The SCC growth rates of 316L weld heat-affected zone (HAZ) and weld metal materials in 288°C pure water were measured. The effects of loading mode and dissolved oxygen on crack growth rate (CGR) were experimentally quantified. Typical intergranular SCC was found in the HAZ specimen, and interdendritic SCC was identified in the weld metal specimen. The HAZ specimen and the weld metal specimen showed quite a similar response to the applied loading modes and the water chemistry, even though their absolute CGR values are different. The crack growth rates under trapezoidal loading are moderately higher than those under constant loading. Switching from the oxygen-bearing water to the hydrogen-bearing water drastically decreased the electrochemical potential and CGR. A time-lag period for crack growth was observed after switching the hydrogenated water back to the oxygen-bearing water, where CGR was low even after the dissolved oxygen concentration and the electrochemical potential had become high.

元の言語English
ホスト出版物のタイトルProceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007
ページ1767-1782
ページ数16
3
出版物ステータスPublished - 2007 12 1
イベント13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007 - Whistler, BC, Canada
継続期間: 2007 4 192007 4 23

Other

Other13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
Canada
Whistler, BC
期間07/4/1907/4/23

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality
  • Materials Science(all)

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  • これを引用

    Lu, Z., Shoji, T., Takeda, Y., Ito, Y., Kai, A., & Tsuchiya, N. (2007). Effects of electrochemical potential on crack growth rate of 316L weld haz and weld metal in 288°C pure water. : Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007 (巻 3, pp. 1767-1782)