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

Varvara Romanova, Ruslan Revovich Balokhonov, Olga Zinovieva

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    8 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

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    Keywords

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

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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