Volume 8, Issue 5 (May 2011)

    Modeling Creep-Fatigue Deformation of Ni-Base Superalloys Using Crystal Viscoplasticity

    (Received 3 December 2010; accepted 26 March 2011)

    Published Online: 2011

    CODEN: JAIOAD

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    Abstract

    Crystal viscoplasticity enables one to correctly capture the anisotropic inelastic behavior of single crystal and directionally solidified alloys as well as the microstructural sensitivity in polycrystalline alloys. This paper reviews several physics-based crystal viscoplasticity models that have been established to predict the deformation response of Ni-base superalloys. The attributes of crystal viscoplasticity models necessary for predicting the creep-fatigue deformation are identified. Several new developments in constitutive modeling of Ni-base superalloys are discussed.


    Author Information:

    Neu, R. W.
    The George W. Woodruff School of Mechanical Engineering, Georgia Institute of TechnologySchool of Materials Science and Engineering, Georgia Institute of Technology, AtlantaAtlanta, GAGA

    Smith, D. J.
    The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA


    Stock #: JAI103674

    ISSN: 1546-962X

    DOI: 10.1520/JAI103674

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    Author
    Title Modeling Creep-Fatigue Deformation of Ni-Base Superalloys Using Crystal Viscoplasticity
    Symposium International Symposium on Creep Fatigue Interactions: Test Methods and Models, 2010-11-17
    Committee E08