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    STP631

    Prediction of Fracture Toughness KIc of 2¼Cr-1Mo Pressure Steels from Charpy V-Notch Test Results

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    Abstract

    The validity of the Barsom, Rolfe, and Novak correlation between Charpy energy, yield strength, and KIc in the upper-shelf region has been confirmed for 2¼Cr-1Mo pressure vessel steels. The relationship between the excess temperature and KIc/KIc-upper shelf has also been developed. Based on these relationships, KIc transition curves may be predicted from Charpy V-notch test results of 2¼Cr-1Mo pressure vessel steels.

    Keywords:

    crack propagation, steels, fracture strength, toughness, transition temperature, impact strength, yield strength


    Author Information:

    Iwadate, T
    Research engineers and general manager, Research Laboratory, Muroran Plant, The Japan Steel Works, Muroran,

    Karaushi, T
    Research engineers and general manager, Research Laboratory, Muroran Plant, The Japan Steel Works, Muroran,

    Watanabe, J
    Research engineers and general manager, Research Laboratory, Muroran Plant, The Japan Steel Works, Muroran,


    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP35557S