Comparison of impact test results on small and ISO-V type Charpy specimens

Tapio Planman, Matti Valo, Kim Wallin

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

    Abstract

    The ductile-to-brittle transition temperatures were calculated from the impact energies measured on ISO-V and KLST specimens for some non-irradiated, irradiated and both irradiated and annealed quenched and tempered pressure vessel steels at the proposed energy levels 68 J/41 J and 3.1 J/1.9 J, or 28 J and 3.15 J. At the energy levels derived from the mean upper shelf energy (USE) ratio (3.1 J/1.9 J) the transition temperatures were on the average 64 deg. C lower as compared with those measured on the ISO-V specimen. At the energy level 3.15 J derived from the ligament area the transition temperature was on the average 36 deg. C lower than that measured on the ISO-V specimen. For both criteria the standard deviation of the correlation was about 15 deg. C. A procedure was also proposed for calculating the USE of ISO-V specimen from the value measured on the KLST specimen. The transition temperature shifts measured for the irradiated materials on the KLST specimen were up to 30 - 40 deg. C lower than those measured on the ISO-V specimens when the shifts were measured at the levels below 75% USE. The degrees of recovery measured on the KLST specimens were of the same order of magnitude or lower than those measured on the ISO-V specimens.
    Original languageEnglish
    Title of host publicationSpecialists meeting on irradiation embrittlement and mitigation
    Subtitle of host publicationWorking Material
    Place of PublicationVienna
    PublisherInternational Atomic Energy Agency IAEA
    Pages301-311
    Volume1
    Publication statusPublished - 1995
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventIAEA Specialists' Meeting on Irradiation Embrittlement and Mitigation - Espoo, Finland
    Duration: 23 Oct 199526 Oct 1995

    Publication series

    SeriesIWGPTS Technical Report
    NumberIWG-LMNPP-95/5

    Conference

    ConferenceIAEA Specialists' Meeting on Irradiation Embrittlement and Mitigation
    CountryFinland
    CityEspoo
    Period23/10/9526/10/95

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  • Cite this

    Planman, T., Valo, M., & Wallin, K. (1995). Comparison of impact test results on small and ISO-V type Charpy specimens. In Specialists meeting on irradiation embrittlement and mitigation: Working Material (Vol. 1, pp. 301-311). International Atomic Energy Agency IAEA. IWGPTS Technical Report, No. IWG-LMNPP-95/5 https://inis.iaea.org/search/search.aspx?orig_q=RN:27022689