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Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016) pp 159–164Cite as

Modelling Microstructure and Mechanical Properties of High Strength Steels During Hot Rolling in an ESP Plant

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Abstract

Production of hot rolled strips for oil and gas transport pipelines requires a fine and homogeneous microstructure and careful choice of chemical composition in order to meet strength, toughness, and weldability requirements. The current work is aimed to assess the feasibility of producing high strength hot rolled strips in a thin slab plant. The study was carried out using a metallurgical modelling system based on empirical equations describing austenite evolution, transformation and mechanical properties (UTS, 50% FATT). Using this approach, it is possible to study the effects of initial slab thickness, reduction ratio and chemical composition on the mechanical properties of strips in a thickness range of 10 to 20 mm. In this way, for each grade, the optimum rolling schedules, microstructures and chemical compositions could be obtained. Starting from this initial condition, the austenite evolution from the entrance of the first roughing stand, is simulated considering the following phenomena:

  • • Recrystallization kinetics.

  • • Recrystallized grain size.

  • • Grain growth after recrystallization.

  • • Strain induced precipitation of Nb(C, N).

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Author information

Authors and Affiliations

  1. Università degli Studi di Perugia, Via G. Duranti 63, 06125, Perugia, Italy

    Andrea Di Schino, Claudio Braccesi & Filippo Cianetti

  2. Centro Sviluppo Materiali SpA, Via di Castel Romano 100, 00128, Roma, Italy

    Ali Smith

Authors
  1. Andrea Di Schino
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  2. Claudio Braccesi
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  3. Filippo Cianetti
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  4. Ali Smith
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Editor information

Editors and Affiliations

  1. Carnegie Mellon University, USA

    Elizabeth A. Holm (Professor of Materials Science and Engineering), Gregory S. Rohrer Ph.D.  & Anthony D. Rollett (Professor of Materials Science and Engineering) (Professor of Materials Science and Engineering),  &  (Professor of Materials Science and Engineering)

  2. Research and Technology Center, U. S. Steel Corporation, USA

    Susan Farjami (Senior research engineer) (Senior research engineer)

  3. Robert Morris University, Pittsburgh, PA, USA

    Priyadarshan Manohar (Associate Professor of Engineering and Co-Director Research and Outreach Center (ROC) (Associate Professor of Engineering and Co-Director Research and Outreach Center (ROC)

  4. University of Pennsylvania, USA

    Gregory S. Rohrer Ph.D.  & David Srolovitz Ph.D. (Member of the National Academy of Engineering, Fellow of MRS, TMS, ASM, Institute of Physics) &  (Member of the National Academy of Engineering, Fellow of MRS, TMS, ASM, Institute of Physics)

  5. Rutgers University, USA

    David Srolovitz Ph.D. (Member of the National Academy of Engineering, Fellow of MRS, TMS, ASM, Institute of Physics) (Member of the National Academy of Engineering, Fellow of MRS, TMS, ASM, Institute of Physics)

  6. Alcoa Technical Center, Pittsburgh, PA, USA

    Hasso Weiland (Technical Fellow) (Technical Fellow)

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© 2016 TMS (The Minerals, Metals & Materials Society)

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Schino, A.D., Braccesi, C., Cianetti, F., Smith, A. (2016). Modelling Microstructure and Mechanical Properties of High Strength Steels During Hot Rolling in an ESP Plant. In: Holm, E.A., et al. Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016). Springer, Cham. https://doi.org/10.1007/978-3-319-48770-0_23

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