Mechanical properties of SMA- and SA-welded joints for quenched and tempered steel STE 470

Martti Vilpas, Kim Wallin, Hannele Tihekari, Risto Karppi

    Research output: Book/ReportReport

    Abstract

    The report is given of test results on mechanical properties of shielded metal arc and submerged arc welded joints of quenched and tempered steel StE 470. The tests comprise conventional hardness, tensile and Charpy-V testing, as well as fracture mechanics testing. The test results of the welded joints show satisfactory strength, toughness and transition behaviour as compared with the corresponding properties of the base material. The arc energy in the range of 17 kJ/cm to 50 kJ/cm has no marked effect on the mechanical properties of the joints. The Charpy-V-transition temperatures lie in the Orange of -40 °C to -60 °C for the weld metals and -30 °C to -45 °C for the fusion boundaries with all the three arc energies 17, 30 and 50 kJ/cm used. Correspondingly, the Kj-transition behaviour of the joints was found to be almost independent of the arc energy. The SMA-welds showed, however, brittle pop-in behaviour at all K rest temperatures, i.e. -80 °C to +20 °C. The reason suggested for this is the heterogeneity of the SMA-weld metals arising from the weawing technique used in the SMAW-tests.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages25
    ISBN (Print)951-38-2179-X
    Publication statusPublished - 1984
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
    Number319
    ISSN0358-5077

    Fingerprint

    Welds
    Mechanical properties
    Steel
    Metals
    Testing
    Fracture mechanics
    Superconducting transition temperature
    Toughness
    Fusion reactions
    Hardness
    Temperature

    Keywords

    • high strength steels
    • toughness
    • ductility
    • welded joints
    • strength

    Cite this

    Vilpas, M., Wallin, K., Tihekari, H., & Karppi, R. (1984). Mechanical properties of SMA- and SA-welded joints for quenched and tempered steel STE 470. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 319
    Vilpas, Martti ; Wallin, Kim ; Tihekari, Hannele ; Karppi, Risto. / Mechanical properties of SMA- and SA-welded joints for quenched and tempered steel STE 470. Espoo : VTT Technical Research Centre of Finland, 1984. 25 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 319).
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    abstract = "The report is given of test results on mechanical properties of shielded metal arc and submerged arc welded joints of quenched and tempered steel StE 470. The tests comprise conventional hardness, tensile and Charpy-V testing, as well as fracture mechanics testing. The test results of the welded joints show satisfactory strength, toughness and transition behaviour as compared with the corresponding properties of the base material. The arc energy in the range of 17 kJ/cm to 50 kJ/cm has no marked effect on the mechanical properties of the joints. The Charpy-V-transition temperatures lie in the Orange of -40 °C to -60 °C for the weld metals and -30 °C to -45 °C for the fusion boundaries with all the three arc energies 17, 30 and 50 kJ/cm used. Correspondingly, the Kj-transition behaviour of the joints was found to be almost independent of the arc energy. The SMA-welds showed, however, brittle pop-in behaviour at all K rest temperatures, i.e. -80 °C to +20 °C. The reason suggested for this is the heterogeneity of the SMA-weld metals arising from the weawing technique used in the SMAW-tests.",
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    Vilpas, M, Wallin, K, Tihekari, H & Karppi, R 1984, Mechanical properties of SMA- and SA-welded joints for quenched and tempered steel STE 470. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 319, VTT Technical Research Centre of Finland, Espoo.

    Mechanical properties of SMA- and SA-welded joints for quenched and tempered steel STE 470. / Vilpas, Martti; Wallin, Kim; Tihekari, Hannele; Karppi, Risto.

    Espoo : VTT Technical Research Centre of Finland, 1984. 25 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 319).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - Mechanical properties of SMA- and SA-welded joints for quenched and tempered steel STE 470

    AU - Vilpas, Martti

    AU - Wallin, Kim

    AU - Tihekari, Hannele

    AU - Karppi, Risto

    PY - 1984

    Y1 - 1984

    N2 - The report is given of test results on mechanical properties of shielded metal arc and submerged arc welded joints of quenched and tempered steel StE 470. The tests comprise conventional hardness, tensile and Charpy-V testing, as well as fracture mechanics testing. The test results of the welded joints show satisfactory strength, toughness and transition behaviour as compared with the corresponding properties of the base material. The arc energy in the range of 17 kJ/cm to 50 kJ/cm has no marked effect on the mechanical properties of the joints. The Charpy-V-transition temperatures lie in the Orange of -40 °C to -60 °C for the weld metals and -30 °C to -45 °C for the fusion boundaries with all the three arc energies 17, 30 and 50 kJ/cm used. Correspondingly, the Kj-transition behaviour of the joints was found to be almost independent of the arc energy. The SMA-welds showed, however, brittle pop-in behaviour at all K rest temperatures, i.e. -80 °C to +20 °C. The reason suggested for this is the heterogeneity of the SMA-weld metals arising from the weawing technique used in the SMAW-tests.

    AB - The report is given of test results on mechanical properties of shielded metal arc and submerged arc welded joints of quenched and tempered steel StE 470. The tests comprise conventional hardness, tensile and Charpy-V testing, as well as fracture mechanics testing. The test results of the welded joints show satisfactory strength, toughness and transition behaviour as compared with the corresponding properties of the base material. The arc energy in the range of 17 kJ/cm to 50 kJ/cm has no marked effect on the mechanical properties of the joints. The Charpy-V-transition temperatures lie in the Orange of -40 °C to -60 °C for the weld metals and -30 °C to -45 °C for the fusion boundaries with all the three arc energies 17, 30 and 50 kJ/cm used. Correspondingly, the Kj-transition behaviour of the joints was found to be almost independent of the arc energy. The SMA-welds showed, however, brittle pop-in behaviour at all K rest temperatures, i.e. -80 °C to +20 °C. The reason suggested for this is the heterogeneity of the SMA-weld metals arising from the weawing technique used in the SMAW-tests.

    KW - high strength steels

    KW - toughness

    KW - ductility

    KW - welded joints

    KW - strength

    M3 - Report

    SN - 951-38-2179-X

    T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

    BT - Mechanical properties of SMA- and SA-welded joints for quenched and tempered steel STE 470

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Vilpas M, Wallin K, Tihekari H, Karppi R. Mechanical properties of SMA- and SA-welded joints for quenched and tempered steel STE 470. Espoo: VTT Technical Research Centre of Finland, 1984. 25 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 319).