Stress corrosion crack initiation of alloy 600 in PWR primary water

doi:10.1016/j.corsci.2017.04.013

Title: Stress corrosion crack initiation of alloy 600 in PWR primary water

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Abstract

Stress corrosion crack (SCC) initiation of three mill-annealed alloy 600 heats in simulated pressurized water reactor primary water has been investigated using constant load tests equipped with in-situ direct current potential drop (DCPD) measurement capabilities. SCC initiation times were greatly reduced by a small amount of cold work. Shallow intergranular attack and/or cracks were found on most high-energy grain boundaries intersecting the surface with only a small fraction evolving into larger cracks and intergranular SCC growth. Crack depth profiles were measured and related to DCPD-detected initiation response. Lastly, we discuss processes controlling the SCC initiation in mill-annealed alloy 600.

Authors:

Zhai, Ziqing ^[1]; Toloczko, Mychailo B. ^[1]; Olszta, Matthew J. ^[1]; Bruemmer, Stephen M. ^[1]

Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Publication Date:: 2017-04-27

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1355456

Alternate Identifier(s):: OSTI ID: 1364392; OSTI ID: 1550512

Report Number(s):: PNNL-SA-123949
Journal ID: ISSN 0010-938X; PII: S0010938X1730104X

Grant/Contract Number:: AC05-76RL01830; AC0576RL01830

Resource Type:: Accepted Manuscript

Journal Name:: Corrosion Science

Additional Journal Information:: Journal Volume: 123; Journal ID: ISSN 0010-938X

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Alloy; Stress corrosion; Crack initiation; SEM

Citation Formats


                    Zhai, Ziqing, Toloczko, Mychailo B., Olszta, Matthew J., and Bruemmer, Stephen M. Stress corrosion crack initiation of alloy 600 in PWR primary water.  United States: N. p., 2017. 
        Web.  doi:10.1016/j.corsci.2017.04.013.

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                    Zhai, Ziqing, Toloczko, Mychailo B., Olszta, Matthew J., & Bruemmer, Stephen M. Stress corrosion crack initiation of alloy 600 in PWR primary water.  United States.  doi:10.1016/j.corsci.2017.04.013.

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                    Zhai, Ziqing, Toloczko, Mychailo B., Olszta, Matthew J., and Bruemmer, Stephen M. Thu .  
        "Stress corrosion crack initiation of alloy 600 in PWR primary water".  United States.  doi:10.1016/j.corsci.2017.04.013.  https://www.osti.gov/servlets/purl/1355456.

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@article{osti_1355456,

  title        = {Stress corrosion crack initiation of alloy 600 in PWR primary water},

  author       = {Zhai, Ziqing and Toloczko, Mychailo B. and Olszta, Matthew J. and Bruemmer, Stephen M.},

  abstractNote = {Stress corrosion crack (SCC) initiation of three mill-annealed alloy 600 heats in simulated pressurized water reactor primary water has been investigated using constant load tests equipped with in-situ direct current potential drop (DCPD) measurement capabilities. SCC initiation times were greatly reduced by a small amount of cold work. Shallow intergranular attack and/or cracks were found on most high-energy grain boundaries intersecting the surface with only a small fraction evolving into larger cracks and intergranular SCC growth. Crack depth profiles were measured and related to DCPD-detected initiation response. Lastly, we discuss processes controlling the SCC initiation in mill-annealed alloy 600.},

  doi          = {10.1016/j.corsci.2017.04.013},

  journal      = {Corrosion Science},

  number       = ,

  volume       = 123,

  place        = {United States},

  year         = {2017},

  month        = {4}

}

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DOI: 10.1016/j.corsci.2017.04.013

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Stress corrosion crack initiation of alloy 600 in PWR primary water

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Stress corrosion crack (SCC) initiation of three mill-annealed alloy 600 heats in simulated pressurized water reactor primary water has been investigated using constant load tests equipped with in-situ direct current potential drop (DCPD) measurement capabilities. SCC initiation times were greatly reduced by a small amount of cold work. Shallow intergranular attack and/or cracks were found on most high-energy grain boundaries intersecting the surface with only a small fraction evolving into larger cracks and intergranular SCC growth. Crack depth profiles were measured and related to DCPD-detected initiation response. Processes controlling the SCC initiation in mill-annealed alloy 600 are discussed.
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