Overview of SCWR candidate materials stress corrosion tests

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    Slow strain rate tests on several SCWR candidate materials were done over the last 10 years at VTT. The test materials were austenitic stainless steels with 15-23% Cr and 10-15% Ni and oxide dispersion strengthened ferritic/martensitic steels with 12-20% Cr. The tests were performed in supercritical water at 250 bar in the temperature range of 500-650oC with 100-150 ppb dissolved oxygen. With regards to the stress corrosion susceptibility and ductility, the best performer in the tests was AISI 316L steel. On the other hand, large heat to heat variation can be expected: another heat of 316L was very susceptible to intergranular stress corrosion cracking. DL-EPR test revealed that at least some heats of low carbon 316 are subject to fast thermal sensitisation at 550oC in supercritical water.
    Original languageEnglish
    Title of host publicationBaltica X
    Subtitle of host publicationInternational Conference on Life Management and Maintenance for Power Plants
    EditorsPertti Auerkari
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages15
    ISBN (Electronic)978-951-38-8436-9, 978-951-38-8435-2
    Publication statusPublished - 2016
    MoE publication typeA4 Article in a conference publication
    EventBALTICA X - International Conference on Life Management and Maintenance for Power Plants - Cruise, Helsinki-Stockholm, Finland
    Duration: 7 Jun 20169 Jun 2016

    Publication series

    SeriesVTT Technology
    Volume261

    Conference

    ConferenceBALTICA X - International Conference on Life Management and Maintenance for Power Plants
    Abbreviated titleBaltica X
    CountryFinland
    CityHelsinki-Stockholm
    Period7/06/169/06/16

    Fingerprint

    Corrosion
    Martensitic steel
    Ferritic steel
    Dissolved oxygen
    Stress corrosion cracking
    Austenitic stainless steel
    Paramagnetic resonance
    Ductility
    Strain rate
    Water
    Hot Temperature
    Carbon
    Oxides
    Steel
    Temperature

    Cite this

    Toivonen, A., & Penttilä, S. (2016). Overview of SCWR candidate materials stress corrosion tests. In P. Auerkari (Ed.), Baltica X: International Conference on Life Management and Maintenance for Power Plants Espoo: VTT Technical Research Centre of Finland. VTT Technology, Vol.. 261
    Toivonen, Aki ; Penttilä, Sami. / Overview of SCWR candidate materials stress corrosion tests. Baltica X: International Conference on Life Management and Maintenance for Power Plants. editor / Pertti Auerkari. Espoo : VTT Technical Research Centre of Finland, 2016. (VTT Technology, Vol. 261).
    @inproceedings{69b0ec0178e44dd8a8644087120ed6bb,
    title = "Overview of SCWR candidate materials stress corrosion tests",
    abstract = "Slow strain rate tests on several SCWR candidate materials were done over the last 10 years at VTT. The test materials were austenitic stainless steels with 15-23{\%} Cr and 10-15{\%} Ni and oxide dispersion strengthened ferritic/martensitic steels with 12-20{\%} Cr. The tests were performed in supercritical water at 250 bar in the temperature range of 500-650oC with 100-150 ppb dissolved oxygen. With regards to the stress corrosion susceptibility and ductility, the best performer in the tests was AISI 316L steel. On the other hand, large heat to heat variation can be expected: another heat of 316L was very susceptible to intergranular stress corrosion cracking. DL-EPR test revealed that at least some heats of low carbon 316 are subject to fast thermal sensitisation at 550oC in supercritical water.",
    author = "Aki Toivonen and Sami Penttil{\"a}",
    year = "2016",
    language = "English",
    series = "VTT Technology",
    publisher = "VTT Technical Research Centre of Finland",
    editor = "Pertti Auerkari",
    booktitle = "Baltica X",
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    Toivonen, A & Penttilä, S 2016, Overview of SCWR candidate materials stress corrosion tests. in P Auerkari (ed.), Baltica X: International Conference on Life Management and Maintenance for Power Plants. VTT Technical Research Centre of Finland, Espoo, VTT Technology, vol. 261, BALTICA X - International Conference on Life Management and Maintenance for Power Plants, Helsinki-Stockholm, Finland, 7/06/16.

    Overview of SCWR candidate materials stress corrosion tests. / Toivonen, Aki; Penttilä, Sami.

    Baltica X: International Conference on Life Management and Maintenance for Power Plants. ed. / Pertti Auerkari. Espoo : VTT Technical Research Centre of Finland, 2016. (VTT Technology, Vol. 261).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    TY - GEN

    T1 - Overview of SCWR candidate materials stress corrosion tests

    AU - Toivonen, Aki

    AU - Penttilä, Sami

    PY - 2016

    Y1 - 2016

    N2 - Slow strain rate tests on several SCWR candidate materials were done over the last 10 years at VTT. The test materials were austenitic stainless steels with 15-23% Cr and 10-15% Ni and oxide dispersion strengthened ferritic/martensitic steels with 12-20% Cr. The tests were performed in supercritical water at 250 bar in the temperature range of 500-650oC with 100-150 ppb dissolved oxygen. With regards to the stress corrosion susceptibility and ductility, the best performer in the tests was AISI 316L steel. On the other hand, large heat to heat variation can be expected: another heat of 316L was very susceptible to intergranular stress corrosion cracking. DL-EPR test revealed that at least some heats of low carbon 316 are subject to fast thermal sensitisation at 550oC in supercritical water.

    AB - Slow strain rate tests on several SCWR candidate materials were done over the last 10 years at VTT. The test materials were austenitic stainless steels with 15-23% Cr and 10-15% Ni and oxide dispersion strengthened ferritic/martensitic steels with 12-20% Cr. The tests were performed in supercritical water at 250 bar in the temperature range of 500-650oC with 100-150 ppb dissolved oxygen. With regards to the stress corrosion susceptibility and ductility, the best performer in the tests was AISI 316L steel. On the other hand, large heat to heat variation can be expected: another heat of 316L was very susceptible to intergranular stress corrosion cracking. DL-EPR test revealed that at least some heats of low carbon 316 are subject to fast thermal sensitisation at 550oC in supercritical water.

    M3 - Conference article in proceedings

    T3 - VTT Technology

    BT - Baltica X

    A2 - Auerkari, Pertti

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Toivonen A, Penttilä S. Overview of SCWR candidate materials stress corrosion tests. In Auerkari P, editor, Baltica X: International Conference on Life Management and Maintenance for Power Plants. Espoo: VTT Technical Research Centre of Finland. 2016. (VTT Technology, Vol. 261).