A procedure for extrapolating Charpy transition temperature from the data at other temperatures and in the case of incomplete transition curves

Kim Wallin, Pekka Nevasmaa

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    A procedure for extrapolating Charpy transition temperature of ferritic structural steels from the data at other temperatures has been developed based on generic equations describing the toughness dependencies of the Charpy ductile-to-brittle transition behaviour on material’s yield strength and upper-shelf toughness. These equations have been derived from an extensive data base comprising 510 different structural steels of the yield strengths ranging from 210 to 1 105 MPa and the upper-shelf toughness in the range of 38 to 335 J. As a case study, the procedure was applied to the assessment of Charpy-V data for SA-106 GrB grade unalloyed structural steels, with the aim at evolving a scheme for the estimation of Charpy-V transition temperature (T 40J /T 27J ) of a given steel at −29 °C from the Charpy data available at other temperatures. It was demonstrated that the procedure is capable of estimating whether a material will fulfil the 40 J (longitudinal), or 27 J (transverse), impact toughness requirement at −29 °C and, in the case the material fails to meet this requirement, providing an acceptance criterion in terms of an estimate to a temperature where the toughness requirement should become fulfilled. Using the present procedure, the analysed materials were characterised into three groups: those fulfilling the impact toughness criterion of 40 J at −29 °C, those that failed but met the corresponding acceptance criterion at comparatively low temperatures around −20 °C, and those that failed and exhibited comparatively high transition temperatures no more than −6…−13 °C. This way, the procedure not only screens those materials fulfilling the specified toughness requirement, but provides the end user with further knowledge on whether the failed material is likely to benefit from additional tests, or should some limitations be accepted for its further use.
    Original languageEnglish
    Pages (from-to)70 - 76
    Number of pages7
    JournalWelding in the World
    Volume49
    Issue number11-12
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Superconducting transition temperature
    Toughness
    Steel
    Temperature
    Yield stress
    Fracture toughness

    Keywords

    • impact toughness
    • mechanical properties
    • toughness
    • transition temperature
    • physical properties
    • yield strength
    • strength
    • evaluation
    • structural steels
    • steels

    Cite this

    @article{7820fe5e967b4b6e95a6a29a25b4f34a,
    title = "A procedure for extrapolating Charpy transition temperature from the data at other temperatures and in the case of incomplete transition curves",
    abstract = "A procedure for extrapolating Charpy transition temperature of ferritic structural steels from the data at other temperatures has been developed based on generic equations describing the toughness dependencies of the Charpy ductile-to-brittle transition behaviour on material’s yield strength and upper-shelf toughness. These equations have been derived from an extensive data base comprising 510 different structural steels of the yield strengths ranging from 210 to 1 105 MPa and the upper-shelf toughness in the range of 38 to 335 J. As a case study, the procedure was applied to the assessment of Charpy-V data for SA-106 GrB grade unalloyed structural steels, with the aim at evolving a scheme for the estimation of Charpy-V transition temperature (T 40J /T 27J ) of a given steel at −29 °C from the Charpy data available at other temperatures. It was demonstrated that the procedure is capable of estimating whether a material will fulfil the 40 J (longitudinal), or 27 J (transverse), impact toughness requirement at −29 °C and, in the case the material fails to meet this requirement, providing an acceptance criterion in terms of an estimate to a temperature where the toughness requirement should become fulfilled. Using the present procedure, the analysed materials were characterised into three groups: those fulfilling the impact toughness criterion of 40 J at −29 °C, those that failed but met the corresponding acceptance criterion at comparatively low temperatures around −20 °C, and those that failed and exhibited comparatively high transition temperatures no more than −6…−13 °C. This way, the procedure not only screens those materials fulfilling the specified toughness requirement, but provides the end user with further knowledge on whether the failed material is likely to benefit from additional tests, or should some limitations be accepted for its further use.",
    keywords = "impact toughness, mechanical properties, toughness, transition temperature, physical properties, yield strength, strength, evaluation, structural steels, steels",
    author = "Kim Wallin and Pekka Nevasmaa",
    year = "2005",
    doi = "10.1007/BF03266504",
    language = "English",
    volume = "49",
    pages = "70 -- 76",
    journal = "Welding in the World",
    issn = "0043-2288",
    publisher = "Springer",
    number = "11-12",

    }

    A procedure for extrapolating Charpy transition temperature from the data at other temperatures and in the case of incomplete transition curves. / Wallin, Kim; Nevasmaa, Pekka.

    In: Welding in the World, Vol. 49, No. 11-12, 2005, p. 70 - 76.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - A procedure for extrapolating Charpy transition temperature from the data at other temperatures and in the case of incomplete transition curves

    AU - Wallin, Kim

    AU - Nevasmaa, Pekka

    PY - 2005

    Y1 - 2005

    N2 - A procedure for extrapolating Charpy transition temperature of ferritic structural steels from the data at other temperatures has been developed based on generic equations describing the toughness dependencies of the Charpy ductile-to-brittle transition behaviour on material’s yield strength and upper-shelf toughness. These equations have been derived from an extensive data base comprising 510 different structural steels of the yield strengths ranging from 210 to 1 105 MPa and the upper-shelf toughness in the range of 38 to 335 J. As a case study, the procedure was applied to the assessment of Charpy-V data for SA-106 GrB grade unalloyed structural steels, with the aim at evolving a scheme for the estimation of Charpy-V transition temperature (T 40J /T 27J ) of a given steel at −29 °C from the Charpy data available at other temperatures. It was demonstrated that the procedure is capable of estimating whether a material will fulfil the 40 J (longitudinal), or 27 J (transverse), impact toughness requirement at −29 °C and, in the case the material fails to meet this requirement, providing an acceptance criterion in terms of an estimate to a temperature where the toughness requirement should become fulfilled. Using the present procedure, the analysed materials were characterised into three groups: those fulfilling the impact toughness criterion of 40 J at −29 °C, those that failed but met the corresponding acceptance criterion at comparatively low temperatures around −20 °C, and those that failed and exhibited comparatively high transition temperatures no more than −6…−13 °C. This way, the procedure not only screens those materials fulfilling the specified toughness requirement, but provides the end user with further knowledge on whether the failed material is likely to benefit from additional tests, or should some limitations be accepted for its further use.

    AB - A procedure for extrapolating Charpy transition temperature of ferritic structural steels from the data at other temperatures has been developed based on generic equations describing the toughness dependencies of the Charpy ductile-to-brittle transition behaviour on material’s yield strength and upper-shelf toughness. These equations have been derived from an extensive data base comprising 510 different structural steels of the yield strengths ranging from 210 to 1 105 MPa and the upper-shelf toughness in the range of 38 to 335 J. As a case study, the procedure was applied to the assessment of Charpy-V data for SA-106 GrB grade unalloyed structural steels, with the aim at evolving a scheme for the estimation of Charpy-V transition temperature (T 40J /T 27J ) of a given steel at −29 °C from the Charpy data available at other temperatures. It was demonstrated that the procedure is capable of estimating whether a material will fulfil the 40 J (longitudinal), or 27 J (transverse), impact toughness requirement at −29 °C and, in the case the material fails to meet this requirement, providing an acceptance criterion in terms of an estimate to a temperature where the toughness requirement should become fulfilled. Using the present procedure, the analysed materials were characterised into three groups: those fulfilling the impact toughness criterion of 40 J at −29 °C, those that failed but met the corresponding acceptance criterion at comparatively low temperatures around −20 °C, and those that failed and exhibited comparatively high transition temperatures no more than −6…−13 °C. This way, the procedure not only screens those materials fulfilling the specified toughness requirement, but provides the end user with further knowledge on whether the failed material is likely to benefit from additional tests, or should some limitations be accepted for its further use.

    KW - impact toughness

    KW - mechanical properties

    KW - toughness

    KW - transition temperature

    KW - physical properties

    KW - yield strength

    KW - strength

    KW - evaluation

    KW - structural steels

    KW - steels

    U2 - 10.1007/BF03266504

    DO - 10.1007/BF03266504

    M3 - Article

    VL - 49

    SP - 70

    EP - 76

    JO - Welding in the World

    JF - Welding in the World

    SN - 0043-2288

    IS - 11-12

    ER -