General corrosion and SCC tests on ODS steels in supercritical water

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

    Abstract

    General corrosion tests and slow strain rate tensile tests (SSRT) were done on 9-20% Cr oxide dispersion strengthened (ODS) steels in supercritical water at 550 and 650oC with 100-150 ppb dissolved oxygen. Based on the results, Al-alloyed high Cr ODS steels PM2000 and MA956 have superior corrosion resistance when compared to 9-14% Cr ODS steels. In SCW at 550oC and above, it is considered that the minimum Cr-content for thin walled components should be higher than 14%. The results indicate that the ODS steels are less susceptible to stress corrosion cracking (SCC) than austenitic stainless steels or Ni-base alloys in supercritical water. However, more extensive studies with different water chemistries and strain rates should be made.
    Original languageEnglish
    Title of host publicationBaltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts
    EditorsPertti Auerkari, Juha Veivo
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages28
    ISBN (Print)978-951-38-8029-3, 978-951-38-8030-9
    Publication statusPublished - 2013
    MoE publication typeNot Eligible
    EventBALTICA IX - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland
    Duration: 11 Jun 201313 Jun 2013

    Publication series

    SeriesVTT Technology
    Number107
    ISSN2242-1211

    Conference

    ConferenceBALTICA IX - International Conference on Life Management and Maintenance for Power Plants
    CountryFinland
    CityHelsinki-Stockholm
    Period11/06/1313/06/13

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  • Cite this

    Toivonen, A., & Penttilä, S. (2013). General corrosion and SCC tests on ODS steels in supercritical water. In P. Auerkari, & J. Veivo (Eds.), Baltica IX. International Conference on Life Management and Maintenance for Power Plants - Abstracts (pp. 28). VTT Technical Research Centre of Finland. VTT Technology, No. 107 https://www.vtt.fi/inf/pdf/technology/2013/T107.pdf