A micromechanical analysis of deformation-induced surface roughening in surface-modified polycrystalline materials

Varvara Romanova, Ruslan Revovich Balokhonov, Olga Zinovieva

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    The effect of surface layer modification on the deformation-induced surface roughening in polycrystalline materials is investigated numerically. Three-dimensional constitutive models of as-received and surface-hardened polycrystals are constructed and implemented in finite-difference calculations. The free surface is shown to undergo out-of-plane displacements due to microscale stresses developing in the subsurface layer and acting across the free surface. The surface-hardened layer as thin as half the grain diameter efficiently suppresses grain-scale surface displacements. The thicker is the hardened layer, the smoother is the surface of the material.

    Original languageEnglish
    Pages (from-to)359-370
    Number of pages12
    JournalMeccanica
    Volume51
    Issue number2
    DOIs
    Publication statusPublished - 1 Feb 2016

    Fingerprint

    Polycrystalline materials
    surface layers
    polycrystals
    microbalances
    Polycrystals
    Constitutive models

    Keywords

    • Numerical simulation
    • Plastic strain localization
    • Surface hardening
    • Surface roughening

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

    A micromechanical analysis of deformation-induced surface roughening in surface-modified polycrystalline materials. / Romanova, Varvara; Balokhonov, Ruslan Revovich; Zinovieva, Olga.

    In: Meccanica, Vol. 51, No. 2, 01.02.2016, p. 359-370.

    Research output: Contribution to journalArticle

    Romanova, Varvara ; Balokhonov, Ruslan Revovich ; Zinovieva, Olga. / A micromechanical analysis of deformation-induced surface roughening in surface-modified polycrystalline materials. In: Meccanica. 2016 ; Vol. 51, No. 2. pp. 359-370.
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