A crystal plasticity approach for shear banding in hot rolled high-strength steels

Matti Lindroos, Anssi Laukkanen, Veli-Tapani Kuokkala

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    Abstract

    A crystal plasticity approach with a phenomenological shear banding mechanism incorporated in a conventional dislocation crystal plasticity model is presented. In the developed framework, the hardening and softening relations are considered both within and between the deformation mechanisms. The study aims to increase the understanding of the importance of hot rolling texture to the shear banding propensity in martensitic steels. In the single crystal simulations performed for selected common rolling textures, it was found that shear band activation and the magnitude of softening are dependent on the initial orientation of the crystal. In general, softening-related shear banding in single crystals was shown to be well reproduced by the model at high plastic strains and high strain rates.
    Original languageEnglish
    Pages (from-to)5608-5615
    Number of pages8
    JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
    Volume48
    Issue number11
    DOIs
    Publication statusPublished - 2017
    MoE publication typeA1 Journal article-refereed

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    Keywords

    • crystal orientation
    • dislocations (crystals)
    • hot rolling
    • martensitic steel
    • plasticity
    • single crystals
    • strain
    • strain rate

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