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Interpretation of the Unloading Non-linearity in Dual-Phase 980 Steel Using an Elasto-Visco-Plastic Self-consistent Polycrystal Model

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Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity (ICTP 2023)

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Abstract

A dual-phase 980 steel sample consisting of hard martensitic and ductile ferritic phases was investigated in terms of its nonlinear unloading behavior and the Bauschinger effect. The microstructural characters obtained from a set of electron back-scattered diffraction scans were used to analyze the crystallographic texture for each phase. The incremental elasto-visco-plastic self-consistent model was applied with an empirical Voce hardening law. Neither backstress nor the effect of geometrically necessary dislocation was accounted for. Despite the simplicity of this baseline \(\Delta \) EVPSC model, the nonlinear unloading and the Bauschinger effect were captured. It seems that the contrast in the critical resolved shear stress of the two phases suffices to induce earlier and selective re-yielding of ductile ferrite.

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Acknowledgment

This research was supported by Changwon National University in 2023–2024.

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Authors and Affiliations

  1. Department of Materials Convergence and System Engineering, Changwon National University, Changwon, Republic of Korea

    Bohye Jeon

  2. School of Materials Science and Engineering, Changwon National University, Changwon, Republic of Korea

    Youngung Jeong

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  1. Bohye Jeon
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  2. Youngung Jeong
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Correspondence to Youngung Jeong .

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Editors and Affiliations

  1. CEMEF - MINES Paris, PSL Research University, Sophia Antipolis, France

    Katia Mocellin

  2. CEMEF - MINES Paris, PSL Research University, Sophia Antipolis, France

    Pierre-Olivier Bouchard

  3. Arts et Metiers Institute of Technology, LCFC, Metz, France

    Régis Bigot

  4. Arts et Metiers Institute of Technology, LCFC, Metz, France

    Tudor Balan

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Jeon, B., Jeong, Y. (2024). Interpretation of the Unloading Non-linearity in Dual-Phase 980 Steel Using an Elasto-Visco-Plastic Self-consistent Polycrystal Model. In: Mocellin, K., Bouchard, PO., Bigot, R., Balan, T. (eds) Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity. ICTP 2023. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-40920-2_69

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  • DOI: https://doi.org/10.1007/978-3-031-40920-2_69

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-40919-6

  • Online ISBN: 978-3-031-40920-2

  • eBook Packages: EngineeringEngineering (R0)

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