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

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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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.",
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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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T1 - A crystal plasticity approach for shear banding in hot rolled high-strength steels

AU - Lindroos, Matti

AU - Laukkanen, Anssi

AU - Kuokkala, Veli-Tapani

PY - 2017

Y1 - 2017

N2 - 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.

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.

KW - crystal orientation

KW - dislocations (crystals)

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KW - plasticity

KW - single crystals

KW - strain

KW - strain rate

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