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

Matti Lindroos, Anssi Laukkanen, Veli-Tapani Kuokkala

    Research output: Contribution to journalArticleScientificpeer-review

    1 Citation (Scopus)

    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

    Fingerprint

    high strength steels
    High strength steel
    plastic properties
    Plasticity
    Textures
    Single crystals
    softening
    shear
    Martensitic steel
    Crystals
    Shear bands
    Hot rolling
    Dislocations (crystals)
    Crystal orientation
    crystals
    Hardening
    Strain rate
    Plastic deformation
    textures
    Chemical activation

    Keywords

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

    Cite this

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    title = "A crystal plasticity approach for shear banding in hot rolled high-strength steels",
    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.",
    keywords = "crystal orientation, dislocations (crystals), hot rolling, martensitic steel, plasticity, single crystals, strain, strain rate",
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    A crystal plasticity approach for shear banding in hot rolled high-strength steels. / Lindroos, Matti; Laukkanen, Anssi; Kuokkala, Veli-Tapani.

    In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 48, No. 11, 2017, p. 5608-5615.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Lindroos, Matti

    AU - Laukkanen, Anssi

    AU - Kuokkala, Veli-Tapani

    PY - 2017

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    AB - 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.

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    KW - dislocations (crystals)

    KW - hot rolling

    KW - martensitic steel

    KW - plasticity

    KW - single crystals

    KW - strain

    KW - strain rate

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