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

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

ENG - Fracture and Reliability Research Institute

Tohoku University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

6 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007
Pages	1767-1782
Number of pages	16
Publication status	Published - 2007
Event	13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007 - Whistler, BC, Canada Duration: 2007 Apr 19 → 2007 Apr 23

Publication series

Name	Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
Volume	3

Conference

Conference	13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007
Country/Territory	Canada
City	Whistler, BC
Period	07/4/19 → 07/4/23

Cite this

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. In Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007 (pp. 1767-1782). (Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007; Vol. 3).

Lu, Zhanpeng ; Shoji, Tetsuo ; Takeda, Yoichi et al. / 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. 2007. pp. 1767-1782 (Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007).

@inproceedings{98c6ed1d81d846a79ea3f3a32d15aad5,

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

abstract = "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.",

author = "Zhanpeng Lu and Tetsuo Shoji and Yoichi Takeda and Yuzuru Ito and Akira Kai and Nobuhisa Tsuchiya",

year = "2007",

language = "English",

isbn = "9781605600598",

series = "Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007",

pages = "1767--1782",

booktitle = "Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007",

note = "13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007 ; Conference date: 19-04-2007 Through 23-04-2007",

}

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. in Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007. Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007, vol. 3, pp. 1767-1782, 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007, Whistler, BC, Canada, 07/4/19.

Effects of electrochemical potential on crack growth rate of 316L weld haz and weld metal in 288°C pure water. / Lu, Zhanpeng; Shoji, Tetsuo; Takeda, Yoichi et al.
Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007. 2007. p. 1767-1782 (Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007; Vol. 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Effects of electrochemical potential on crack growth rate of 316L weld haz and weld metal in 288°C pure water

AU - Lu, Zhanpeng

AU - Shoji, Tetsuo

AU - Takeda, Yoichi

AU - Ito, Yuzuru

AU - Kai, Akira

AU - Tsuchiya, Nobuhisa

PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

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M3 - Conference contribution

AN - SCOPUS:52349087766

SN - 9781605600598

T3 - Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007

SP - 1767

EP - 1782

BT - Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007

T2 - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007

Y2 - 19 April 2007 through 23 April 2007

ER -

Lu Z, Shoji T, Takeda Y, Ito Y, Kai A, Tsuchiya N. Effects of electrochemical potential on crack growth rate of 316L weld haz and weld metal in 288°C pure water. In Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007. 2007. p. 1767-1782. (Canadian Nuclear Society - 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007).

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

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