Numerical study of the surface hardening effect on the deformation-induced roughening in titanium polycrystals

Varvara Romanova, Ruslan Revovich Balokhonov, Olga Zinovieva, Valery Shakhidjanov

    Результат исследования: Материалы для журналаСтатья

    5 Цитирования (Scopus)

    Аннотация

    A three-dimensional numerical analysis is performed of the deformation-induced roughening in polycrystalline specimens with and without surface-hardened layers. Three-dimensional microstructure-based constitutive models are developed, using crystal plasticity, and employed in finite element calculations of uniaxial tension. Grain structure is shown to be responsible for free surface roughening under uniaxial loading. Microscale stresses acting normally to the free surface in the bulk of the material are associated with normal displacements. The surface-hardened layer moves the grain structure away from the free surface, smoothing out the microscale folds formed due to displacements of individual grains, while the mesoscale surface undulations remain clearly visible.

    Язык оригиналаАнглийский
    Страницы (с... по...)96-102
    Количество страниц7
    ЖурналComputational Materials Science
    Том116
    DOI
    Статус публикацииОпубликовано - 15 апр 2016

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    ASJC Scopus subject areas

    • Computer Science(all)
    • Chemistry(all)
    • Materials Science(all)
    • Mechanics of Materials
    • Physics and Astronomy(all)
    • Computational Mathematics

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