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

Pertti Auerkari, Pekka Gren, Kim Wallin

    Research output: Book/ReportReport


    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


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


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