Creep, fatigue and microstructural degradation in gas turbine superalloys

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

    Abstract

    Creep and fatigue are important and life-limiting damage mechanisms for many gas turbine components and therefore must be accounted for in design. Creep is promoted by high levels of stress and temperature that also drive microstructural changes in turbine materials. Fatigue is caused by fluctuating loads from, for example, rotation, vibration or thermal cycling, and can also limit component design and life at more modest temperatures. The main characteristics of creep, fatigue, microstructural damage and their combined impact are introduced below, with emphasis on aspects relevant in life assessment of high temperature components such as turbine blades made of superalloys.
    Original languageEnglish
    Title of host publicationPower plant life management and performance improvement
    EditorsJohn E. Oakey
    PublisherWoodhead Publishing
    Chapter8
    Pages307-329
    ISBN (Electronic)978-0-85709-380-6
    ISBN (Print)978-1-84569-726-6
    DOIs
    Publication statusPublished - 2011
    MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

    Publication series

    SeriesWoodhead publishing series in energy
    Volume23

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    Keywords

    • creep
    • fatigue
    • microstructure
    • degradation

    Cite this

    Auerkari, P. (2011). Creep, fatigue and microstructural degradation in gas turbine superalloys. In J. E. Oakey (Ed.), Power plant life management and performance improvement (pp. 307-329). Woodhead Publishing. Woodhead publishing series in energy, Vol.. 23 https://doi.org/10.1533/9780857093806.3.307