The effect of post weld heat treatment on welds in steel structures

Pertti Auerkari, Pekka Gren, Kim Wallin

    Research output: Book/ReportReport

    Abstract

    The effect of post weld heat treatment (PWHT) on residual stresses, yield strength and toughness as well as on microstructural features of submerged are weld metal was studied with three types of C-Mn-steels. All techniques used for measuring residual stress reduction in PWHT were found insufficient to adequately characterise the stress distribution. The yield and ultimate strength were not significantly affected by the PWHT (600 °C/2 h) applied. No improvement in the toughness as determined by the COD was found. Slight coarsening of the microstructure was, however, observed. With the submerged are welding method and the C-Mn-steels used in this study no other advantages of PWHT can be expected than reduced risk to brittle fracture through stress relief.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages44
    ISBN (Print)951-38-1849-7
    Publication statusPublished - 1983
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
    Number217
    ISSN0358-5077

    Fingerprint

    Steel structures
    Welds
    Heat treatment
    Toughness
    Residual stresses
    Stress relief
    Steel
    Brittle fracture
    Coarsening
    Yield stress
    Stress concentration
    Welding
    Microstructure
    Metals

    Keywords

    • stress relieving
    • fracture toughness
    • welded joints
    • submerged arc
    • welding
    • steel construction

    Cite this

    Auerkari, P., Gren, P., & Wallin, K. (1983). The effect of post weld heat treatment on welds in steel structures. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 217
    Auerkari, Pertti ; Gren, Pekka ; Wallin, Kim. / The effect of post weld heat treatment on welds in steel structures. Espoo : VTT Technical Research Centre of Finland, 1983. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 217).
    @book{2183aa71e7524e21a6890598ce6b089e,
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    abstract = "The effect of post weld heat treatment (PWHT) on residual stresses, yield strength and toughness as well as on microstructural features of submerged are weld metal was studied with three types of C-Mn-steels. All techniques used for measuring residual stress reduction in PWHT were found insufficient to adequately characterise the stress distribution. The yield and ultimate strength were not significantly affected by the PWHT (600 °C/2 h) applied. No improvement in the toughness as determined by the COD was found. Slight coarsening of the microstructure was, however, observed. With the submerged are welding method and the C-Mn-steels used in this study no other advantages of PWHT can be expected than reduced risk to brittle fracture through stress relief.",
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    Auerkari, P, Gren, P & Wallin, K 1983, The effect of post weld heat treatment on welds in steel structures. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 217, VTT Technical Research Centre of Finland, Espoo.

    The effect of post weld heat treatment on welds in steel structures. / Auerkari, Pertti; Gren, Pekka; Wallin, Kim.

    Espoo : VTT Technical Research Centre of Finland, 1983. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 217).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - The effect of post weld heat treatment on welds in steel structures

    AU - Auerkari, Pertti

    AU - Gren, Pekka

    AU - Wallin, Kim

    PY - 1983

    Y1 - 1983

    N2 - The effect of post weld heat treatment (PWHT) on residual stresses, yield strength and toughness as well as on microstructural features of submerged are weld metal was studied with three types of C-Mn-steels. All techniques used for measuring residual stress reduction in PWHT were found insufficient to adequately characterise the stress distribution. The yield and ultimate strength were not significantly affected by the PWHT (600 °C/2 h) applied. No improvement in the toughness as determined by the COD was found. Slight coarsening of the microstructure was, however, observed. With the submerged are welding method and the C-Mn-steels used in this study no other advantages of PWHT can be expected than reduced risk to brittle fracture through stress relief.

    AB - The effect of post weld heat treatment (PWHT) on residual stresses, yield strength and toughness as well as on microstructural features of submerged are weld metal was studied with three types of C-Mn-steels. All techniques used for measuring residual stress reduction in PWHT were found insufficient to adequately characterise the stress distribution. The yield and ultimate strength were not significantly affected by the PWHT (600 °C/2 h) applied. No improvement in the toughness as determined by the COD was found. Slight coarsening of the microstructure was, however, observed. With the submerged are welding method and the C-Mn-steels used in this study no other advantages of PWHT can be expected than reduced risk to brittle fracture through stress relief.

    KW - stress relieving

    KW - fracture toughness

    KW - welded joints

    KW - submerged arc

    KW - welding

    KW - steel construction

    M3 - Report

    SN - 951-38-1849-7

    T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

    BT - The effect of post weld heat treatment on welds in steel structures

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Auerkari P, Gren P, Wallin K. The effect of post weld heat treatment on welds in steel structures. Espoo: VTT Technical Research Centre of Finland, 1983. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 217).