Investigation of watergas welded joints for future decisions concerning old hydropower stations

Norbert Enzinger, J. Simon Heber, Horst Cerjak, Josef Mayrhuber

    Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

    Abstract

    After 60 years of service the watergas welded shaft of Kaprun hydropower plant was dismantled. In this work the results of the investigation of this weld are presented. Additionally to strength, hardness and toughness values obtained from standard small scale samples, some integral samples including welding flaws and inhomogenities were tested to verify the fracture mechanical assessment of the shaft. As an overall result it can be reported that the joint itself shows excellent behaviour similar to the base material as long as it is free of defects.

    Originalspracheenglisch
    FachzeitschriftWelding in the world
    Jahrgang53
    Ausgabenummer3-4
    DOIs
    PublikationsstatusVeröffentlicht - 1 Jan 2009

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    Welds
    Defects
    Toughness
    Welding
    Hardness

    Schlagwörter

      ASJC Scopus subject areas

      • !!Mechanics of Materials
      • !!Mechanical Engineering
      • !!Metals and Alloys

      Fields of Expertise

      • Advanced Materials Science

      Dies zitieren

      Investigation of watergas welded joints for future decisions concerning old hydropower stations. / Enzinger, Norbert; Heber, J. Simon; Cerjak, Horst; Mayrhuber, Josef.

      in: Welding in the world, Jahrgang 53, Nr. 3-4, 01.01.2009.

      Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

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      AU - Heber, J. Simon

      AU - Cerjak, Horst

      AU - Mayrhuber, Josef

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      AB - After 60 years of service the watergas welded shaft of Kaprun hydropower plant was dismantled. In this work the results of the investigation of this weld are presented. Additionally to strength, hardness and toughness values obtained from standard small scale samples, some integral samples including welding flaws and inhomogenities were tested to verify the fracture mechanical assessment of the shaft. As an overall result it can be reported that the joint itself shows excellent behaviour similar to the base material as long as it is free of defects.

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      KW - Mechanical properties

      KW - Mechanical tests

      KW - Metallography

      KW - Pressure welding

      KW - Toughness

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