Comparison of Charpy-V and J-Integral Transition Temperature Shifts in CrMoV Pressure Vessel Steels

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 irrad...

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Bibliographic Details
Published in:The International journal of pressure vessels and piping 1993-01, Vol.55 (1), p.81-88
Main Authors: Valo, M, Wallin, K, Torronen, K, Ahlstrand, R
Format: Article
Language:English
Online Access:Get full text
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Summary: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.
ISSN:0308-0161
DOI:10.1016/0308-0161(93)90048-X