Comparison of Charpy-V and J-Integral transition temperature shifts in CrMoV pressure vessel steels

Matti Valo, Kim Wallin, Kari Törrönen, Ralf Ahlstrand

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)

    Abstract

    Both Charpy-V and precracked Charpy-size specimens were included in the original surveillance programme of the Loviisa nuclear power plant pressure vessel made of CrMoV steel. With precracked specimens the J-value at the onset of brittle fracture was determined as a function of temperature and irradiation dose. The irradiation induced transition temperature shifts measured with Charpy-V and precracked three-point bend specimens are correlated by using indexed temperature values. The shapes of brittle fracture transition curves measured with the fracture mechanical specimens both for the irradiated and non-irradiated material state are compared using a statistical brittle fracture model.
    Original languageEnglish
    Pages (from-to)81 - 88
    Number of pages8
    JournalInternational Journal of Pressure Vessels and Piping
    Volume55
    Issue number1
    DOIs
    Publication statusPublished - 1993
    MoE publication typeA1 Journal article-refereed

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