A mesomechanical analysis of the deformation and fracture in polycrystalline materials with ceramic porous coatings

R. R. Balokhonov, A. V. Zinoviev, V. A. Romanova, E. E. Batukhtina

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

    1 Citation (Scopus)

    Abstract

    The special features inherent in the mesoscale mechanical behavior of a porous ceramic coating-steel substrate composite are investigated. Microstructure of the coated material is accounted for explicitly as initial conditions of a plane strain dynamic boundary-value problem solved by the finite difference method. Using a mechanical analogy method, a procedure for generating a uniform curvilinear finite difference computational mesh is developed to provide a more accurate description of the complex grain boundary geometry. A modified algorithm for generation of polycrystalline microstructure of the substrate is designed on the basis of the cellular automata method. The constitutive equations for a steel matrix incorporate an elastic-plastic model for a material subjected to isotropic hardening. The Hall-Petch relation is used to account for the effect of the grain size on the yield stress and strain hardening history. A brittle fracture model for a ceramic coating relying on the Huber criterion is employed. The model allows for crack nucleation in the regions of triaxial tension. The complex inhomogeneous stress and plastic strain patterns are shown to be due to the presence of interfaces of three types: coating-substrate interface, grain boundaries, and pore surfaces.

    Original languageEnglish
    Title of host publicationAdvanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
    PublisherAmerican Institute of Physics Inc.
    Volume1683
    ISBN (Electronic)9780735413306
    DOIs
    Publication statusPublished - 27 Oct 2015
    EventInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015 - Tomsk, Russian Federation
    Duration: 21 Sep 201525 Sep 2015

    Conference

    ConferenceInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015
    CountryRussian Federation
    CityTomsk
    Period21.9.1525.9.15

    Fingerprint

    ceramic coatings
    ceramics
    coatings
    hardening
    plastics
    grain boundaries
    steels
    microstructure
    hubs
    strain hardening
    plane strain
    cellular automata
    constitutive equations
    boundary value problems
    coating
    mesh
    cracks
    grain size
    histories
    nucleation

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Balokhonov, R. R., Zinoviev, A. V., Romanova, V. A., & Batukhtina, E. E. (2015). A mesomechanical analysis of the deformation and fracture in polycrystalline materials with ceramic porous coatings. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures (Vol. 1683). [020020] American Institute of Physics Inc.. https://doi.org/10.1063/1.4932710

    A mesomechanical analysis of the deformation and fracture in polycrystalline materials with ceramic porous coatings. / Balokhonov, R. R.; Zinoviev, A. V.; Romanova, V. A.; Batukhtina, E. E.

    Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. Vol. 1683 American Institute of Physics Inc., 2015. 020020.

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

    Balokhonov, RR, Zinoviev, AV, Romanova, VA & Batukhtina, EE 2015, A mesomechanical analysis of the deformation and fracture in polycrystalline materials with ceramic porous coatings. in Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. vol. 1683, 020020, American Institute of Physics Inc., International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2015, Tomsk, Russian Federation, 21.9.15. https://doi.org/10.1063/1.4932710
    Balokhonov RR, Zinoviev AV, Romanova VA, Batukhtina EE. A mesomechanical analysis of the deformation and fracture in polycrystalline materials with ceramic porous coatings. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. Vol. 1683. American Institute of Physics Inc. 2015. 020020 https://doi.org/10.1063/1.4932710
    Balokhonov, R. R. ; Zinoviev, A. V. ; Romanova, V. A. ; Batukhtina, E. E. / A mesomechanical analysis of the deformation and fracture in polycrystalline materials with ceramic porous coatings. Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. Vol. 1683 American Institute of Physics Inc., 2015.
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