Mesomechanical numerical modeling of the stress-strain localization and fracture in an aluminum alloy with a composite coating

Ruslan Revovich Balokhonov, Eugen A. Schwab, Varvara A. Romanova, Aleksandr V. Zinoviev, Sergey A. Martynov

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

    Abstract

    A numerical analysis of plastic strain localization and fracture in an aluminum alloy with a composite aluminum (Al) - titanium carbide (TiC) coating providing oxidation protection is presented. Boundary-value problems in plane strain and three-dimensional formulations are solved numerically by the finite-difference and finite-element methods, respectively. The Al-TiC interface geometry corresponds to the configuration found experimentally and is accounted for explicitly in calculations. An algorithm to build a 3D finite-element model of TiC particles is developed. To simulate the mechanical response of the aluminum substrate and composite coating, use was made of an elastic-plastic model with isotropic strain hardening and a fracture model taking into account crack initiation and growth in the regions experiencing tensile stresses. Local regions of bulk tension are shown to arise near the interfaces even under simple uniaxial compression of the coated material, which controls the mechanisms of plastic strain and fracture localization at the mesoscale level. The role of technological residual stresses is revealed.

    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    PublisherAmerican Institute of Physics Inc.
    Pages47-50
    Number of pages4
    Volume1623
    ISBN (Print)9780735412606
    DOIs
    Publication statusPublished - 2014
    EventInternational Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Russian Federation
    Duration: 3 Sep 20145 Sep 2014

    Other

    OtherInternational Conference on Physical Mesomechanics of Multilevel Systems 2014
    CountryRussian Federation
    CityTomsk
    Period3.9.145.9.14

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    Keywords

    • Coated materials
    • Fracture
    • Mesomechanics
    • Numerical simulation
    • Plastic strain

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Balokhonov, RR., Schwab, E. A., Romanova, V. A., Zinoviev, A. V., & Martynov, S. A. (2014). Mesomechanical numerical modeling of the stress-strain localization and fracture in an aluminum alloy with a composite coating. In AIP Conference Proceedings (Vol. 1623, pp. 47-50). American Institute of Physics Inc.. https://doi.org/10.1063/1.4898879