Numerical study of the surface-hardening effect on surface phenomena in 3D polycrystalline specimens

Varvara Romanova, Ruslan Revovich Balokhonov, Olga Zinovieva, Valeriy Shakhijanov

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

    2 Citations (Scopus)

    Abstract

    Surface hardening effect on the mesoscale surface deformation in polycrystalline specimens subjected to uniaxial tension is numerically studied. Basing on the experimental findings, three-dimensional microstructure-based constitutive models of the unhardened and surface-hardened polycrystalline specimens are constructed. The mechanical behavior of the polycrystalline models is analysed numerically by the finite-difference method. The grain structure is shown to be responsible for the free surface roughening under uniaxial loading. Microscale stresses acting in the bulk of the material across the free surface give rise to the formation of surface ridges and valleys. The hardened layer in a surface-hardened specimen moves the grain structure away from the free surface, thus smoothing out the microscale folds caused by displacements of individual grains. The thicker is the modified layer, the smoother is the surface relief.

    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    PublisherAmerican Institute of Physics Inc.
    Pages531-534
    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

      Fingerprint

    Keywords

    • 3d polycrystalline models
    • Grain boundaries
    • Surface hardening
    • Surface roughening

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Romanova, V., Balokhonov, RR., Zinovieva, O., & Shakhijanov, V. (2014). Numerical study of the surface-hardening effect on surface phenomena in 3D polycrystalline specimens. In AIP Conference Proceedings (Vol. 1623, pp. 531-534). American Institute of Physics Inc.. https://doi.org/10.1063/1.4901497