Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy

Go Ozeki, Ryuji Sugiura, Toshimitsu Yokobori, Yoshiko Nagumo, Hiroaki Takeuchi, Takashi Matsuzaki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Ni-base directionally solidified superalloy strengthened by γ′ precipitates have been developed as a gas turbine blade. However, it is difficult to detect creep damage such as creep voids by conventional observation techniques. It is important to clarify the creep damage behavior for Ni-base superalloy. In this study, creep crack growth tests for Ni-base directionally solidified superalloy CM247LC were conducted using the in-situ observational system. Additionally, the metallographical investigation was conducted on crept specimen using EBSD analysis and relationship between creep crack growth path and material microstructure were clarified. And, in order to clarify the difference of creep crack growth behavior, the designed two-dimensional elastic-plastic creep finite element analyses were conducted for the model with grain distribution obtained by EBSD analysis.

    Original languageEnglish
    Title of host publicationASME 2013 Pressure Vessels and Piping Conference, PVP 2013
    DOIs
    Publication statusPublished - 2013 Dec 1
    EventASME 2013 Pressure Vessels and Piping Conference, PVP 2013 - Paris, France
    Duration: 2013 Jul 142013 Jul 18

    Publication series

    NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
    Volume6 A
    ISSN (Print)0277-027X

    Other

    OtherASME 2013 Pressure Vessels and Piping Conference, PVP 2013
    Country/TerritoryFrance
    CityParis
    Period13/7/1413/7/18

    ASJC Scopus subject areas

    • Mechanical Engineering

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