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

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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 -