Joint characterisation for repair brazing of superalloys

Liisa Heikinheimo, Anssi Laukkanen, Juha Veivo

    Research output: Contribution to journalArticleScientificpeer-review

    15 Citations (Scopus)

    Abstract

    The restricted weldability of superalloys that can operate at high temperatures and under mechanical loadings, required in modern gas turbines, has lead to the development of repair brazing techniques for various crack types and for restoration of dimensional changes. Methods to characterise these joints are necessary for the development work, the quality control of the procedures and acceptance of refurbished parts. These methods are mainly various NDT techniques, metallography, mechanical testing and service simulating testing, such as creep and thermal fatigue testing.
    Original languageEnglish
    Pages (from-to)5 - 12
    Number of pages8
    JournalWelding in the World
    Volume49
    Issue number5-6
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Thermal fatigue
    Fatigue testing
    Metallography
    Weldability
    Brazing
    Mechanical testing
    Nondestructive examination
    Superalloys
    Restoration
    Quality control
    Gas turbines
    Creep
    Repair
    Cracks
    Testing
    Temperature

    Keywords

    • ProperTune

    Cite this

    Heikinheimo, Liisa ; Laukkanen, Anssi ; Veivo, Juha. / Joint characterisation for repair brazing of superalloys. In: Welding in the World. 2005 ; Vol. 49, No. 5-6. pp. 5 - 12.
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    Joint characterisation for repair brazing of superalloys. / Heikinheimo, Liisa; Laukkanen, Anssi; Veivo, Juha.

    In: Welding in the World, Vol. 49, No. 5-6, 2005, p. 5 - 12.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Heikinheimo, Liisa

    AU - Laukkanen, Anssi

    AU - Veivo, Juha

    PY - 2005

    Y1 - 2005

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    AB - The restricted weldability of superalloys that can operate at high temperatures and under mechanical loadings, required in modern gas turbines, has lead to the development of repair brazing techniques for various crack types and for restoration of dimensional changes. Methods to characterise these joints are necessary for the development work, the quality control of the procedures and acceptance of refurbished parts. These methods are mainly various NDT techniques, metallography, mechanical testing and service simulating testing, such as creep and thermal fatigue testing.

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    JF - Welding in the World

    SN - 0043-2288

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