The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy

Christopher J. Cowen, Carl J. Boehlert

    Research output: ResearchConference contribution

    Abstract

    In-situ tensile-creep experiments were performed on a Ti-15Al-33Nb(at%) alloy using a specialized tensile stage placed within the vacuum chamber of a Camscan 44 FE scanning electron microscope (SEM). The creep damage evolution on the sample surface was chronicled through backscattered electron (BSE) imaging as a function of stress, time, and creep displacement at 650°C. The experiments revealed that the prior-BCC grain boundaries were the locus of damage accumulation during creep and significant grain boundary cracking was observed. The grain boundary cracking was verified to occur within the bulk of the material through post-mortem analysis.

    LanguageEnglish (US)
    Title of host publicationMaterials Research Society Symposium Proceedings
    Pages413-418
    Number of pages6
    Volume980
    StatePublished - 2007
    Event2006 MRS Fall Meeting - Boston, MA, United States
    Duration: Nov 27 2006Nov 30 2006

    Other

    Other2006 MRS Fall Meeting
    CountryUnited States
    CityBoston, MA
    Period11/27/0611/30/06

    Profile

    Creep
    Grain boundaries
    Experiments
    Electron microscopes
    Vacuum
    Scanning
    Imaging techniques
    Electrons

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials

    Cite this

    Cowen, C. J., & Boehlert, C. J. (2007). The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. In Materials Research Society Symposium Proceedings (Vol. 980, pp. 413-418)

    The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. / Cowen, Christopher J.; Boehlert, Carl J.

    Materials Research Society Symposium Proceedings. Vol. 980 2007. p. 413-418.

    Research output: ResearchConference contribution

    Cowen, CJ & Boehlert, CJ 2007, The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. in Materials Research Society Symposium Proceedings. vol. 980, pp. 413-418, 2006 MRS Fall Meeting, Boston, MA, United States, 11/27/06.
    Cowen CJ, Boehlert CJ. The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. In Materials Research Society Symposium Proceedings. Vol. 980. 2007. p. 413-418.
    Cowen, Christopher J. ; Boehlert, Carl J./ The evolution of prior-BCC grain boundary cracking during in-situ creep deformation of a Ti-15Al-33Nb(at%) alloy. Materials Research Society Symposium Proceedings. Vol. 980 2007. pp. 413-418
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