Austenitic steel is a candidate material for supercritical water-cooled reactor (SCWR). This study is to investigate the stress corrosion cracking (SCC) behavior of HR3C under the effect of supercritical water chemistry. A transition phenomenon of the water parameters was monitored during a pseudocritical region by water quality experiments at 650°C and 30 MPa. The stress–strain curves and fracture time of HR3C were obtained by slow strain rate tensile (SSRT) tests in the supercritical water at 620°C and 25 MPa. The concentration of the dissolved oxygen (DO) was , and the strain rate was . The recent results showed that the failure mode was dominated by intergranular brittle fracture. The relations of the oxygen concentration and the fracture time were nonlinear. of oxygen accelerated the cracking, but a longer fracture time was measured when the oxygen concentration was increased to . Chromium depletion occurred in the oxide layer at the tip of cracks. Grain size increased and chain-precipitated phases were observed in the fractured specimens. These characteristics were considered to contribute to the intergranular SCC.
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January 2016
Research Papers
Effect of Oxidation Chemistry of Supercritical Water on Stress Corrosion Cracking of Austenitic Steels
Bin Gong,
Bin Gong
1
Water Chemistry Laboratory,
e-mail: gongbin_npic@163.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
, Chengdu City, Sichuan Province 610213
, China
e-mail: gongbin_npic@163.com
1Corresponding author.
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Yanping Huang,
Yanping Huang
Mem. ASME
CNNC Key Laboratory on Nuclear Reactor Thermalhydraulics Technology,
e-mail: hyanping007@163.com
CNNC Key Laboratory on Nuclear Reactor Thermalhydraulics Technology,
Nuclear Power Institute of China
, P.O. Box 622-200, Chengdu, Sichuan 610041
, China
e-mail: hyanping007@163.com
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E. Jiang,
E. Jiang
Water Chemistry Laboratory,
e-mail: jiangee@126.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
, Chengdu City, Sichuan Province 610213
, China
e-mail: jiangee@126.com
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Yongfu Zhao,
Yongfu Zhao
Water Chemistry Laboratory,
e-mail: zhaoyongfu0127@126.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
, Chengdu City, Sichuan Province 610213
, China
e-mail: zhaoyongfu0127@126.com
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Weiwei Liu,
Weiwei Liu
Water Chemistry Laboratory,
e-mail: wwliu527@163.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
Chengdu City, Sichuan Province 610213
, China
e-mail: wwliu527@163.com
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Zhiru Zhou
Zhiru Zhou
International Cooperation Department,
e-mail: zw2001amy@163.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
Chengdu City, Sichuan Province 610213
China
e-mail: zw2001amy@163.com
Search for other works by this author on:
Bin Gong
Water Chemistry Laboratory,
e-mail: gongbin_npic@163.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
, Chengdu City, Sichuan Province 610213
, China
e-mail: gongbin_npic@163.com
Yanping Huang
Mem. ASME
CNNC Key Laboratory on Nuclear Reactor Thermalhydraulics Technology,
e-mail: hyanping007@163.com
CNNC Key Laboratory on Nuclear Reactor Thermalhydraulics Technology,
Nuclear Power Institute of China
, P.O. Box 622-200, Chengdu, Sichuan 610041
, China
e-mail: hyanping007@163.com
E. Jiang
Water Chemistry Laboratory,
e-mail: jiangee@126.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
, Chengdu City, Sichuan Province 610213
, China
e-mail: jiangee@126.com
Yongfu Zhao
Water Chemistry Laboratory,
e-mail: zhaoyongfu0127@126.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
, Chengdu City, Sichuan Province 610213
, China
e-mail: zhaoyongfu0127@126.com
Weiwei Liu
Water Chemistry Laboratory,
e-mail: wwliu527@163.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
Chengdu City, Sichuan Province 610213
, China
e-mail: wwliu527@163.com
Zhiru Zhou
International Cooperation Department,
e-mail: zw2001amy@163.com
Nuclear Power Institute of China
, Third Section of Huafu Road, Huayang Town, Shuangliu County
Chengdu City, Sichuan Province 610213
China
e-mail: zw2001amy@163.com
1Corresponding author.
Manuscript received June 1, 2015; final manuscript received July 8, 2015; published online December 9, 2015. Assoc. Editor: Thomas Schulenberg.
ASME J of Nuclear Rad Sci. Jan 2016, 2(1): 011019 (8 pages)
Published Online: December 9, 2015
Article history
Received:
June 1, 2015
Revision Received:
July 8, 2015
Accepted:
July 13, 2015
Citation
Gong, B., Huang, Y., Jiang, E., Zhao, Y., Liu, W., and Zhou, Z. (December 9, 2015). "Effect of Oxidation Chemistry of Supercritical Water on Stress Corrosion Cracking of Austenitic Steels." ASME. ASME J of Nuclear Rad Sci. January 2016; 2(1): 011019. https://doi.org/10.1115/1.4031076
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