Numerical study of Stress-Strain localization in the titanium surface modified by an electron beam treatment

Ruslan Balokhonov, Varvara Romanova, Alexey Panin, Sergey Martynov, Marina Kazachenok

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    Abstract

    Numerical simulation is performed to investigate the mesoscale stress-strain localization in a surface-modified commercial titanium alloy. The calculated crystalline microstructure corresponds to that observed in experiments and is accounted for in an explicit way as initial conditions of a dynamic boundary-value problem. The latter is stated in terms of plane strain developing in microstructure subjected to tension and is solved numerically by the finite-difference method. Elastic-plastic constitutive models were built to describe the experimental mechanical response both of the substrate and of the modified layer. Plastic strain localization is found to depend on the grain yield strength.

    Original languageEnglish
    Pages (from-to)329-334
    Number of pages6
    JournalFacta Universitatis, Series: Mechanical Engineering
    Volume14
    Issue number3
    DOIs
    Publication statusPublished - 2016

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    Keywords

    • Microstructure-based numerical simulation
    • Plastic strain localization
    • Surface-modified materials
    • Titanium alloys

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Mechanics of Materials
    • Mechanical Engineering
    • Polymers and Plastics
    • Industrial and Manufacturing Engineering

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