Non-destructive prediction method of creep damage and remnant life related to those under creep-fatigue interactive conditions for nickel base superalloys

A. Ando, A. Toshimitsu Yokobori, Ryuji Sugiura, T. Ohmi, G. Ozeki, T. Matsubara

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    In order to clarify the microdamage formation behaviour for high temperature brittle IN100 alloy, a polycrystalline nickel base superalloy, in situ observational test was carried out to observe creep damage formation behaviour of a notched IN100 specimen. Furthermore, the experimental findings of creep damage formation were evaluated by an original elastic-plastic creep finite element analysis. As a result, microcracks and damage forming areas were found to develop in the creep damage areas suggested by this analysis. This has resulted in the development of a non-destructive prediction method for creep damage accumulation and material's remnant life. The application of this method to the cases under creep-fatigue conditions was addressed.

    Original languageEnglish
    Pages (from-to)266-275
    Number of pages10
    JournalMaterials at High Temperatures
    Volume32
    Issue number3
    DOIs
    Publication statusPublished - 2015 May 1

    Keywords

    • Creep damage
    • Micro slurry-jet erosion
    • Microdamage
    • Nickel base superalloy
    • Non-destructive prediction
    • Remnant life

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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