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Steel Alloy Hot Roll Simulations and Through-Thickness Variation Using Dislocation Density-Based Modeling

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Abstract

Different roll pass reduction schedules have different effects on the through-thickness properties of hot-rolled metal slabs. In order to assess or improve a reduction schedule using the finite element method, a material model is required that captures the relevant deformation mechanisms and physics. The model should also report relevant field quantities to assess variations in material state through the thickness of a simulated rolled metal slab. In this paper, a dislocation density-based material model with recrystallization is presented and calibrated on the material response of a high-strength low-alloy steel. The model has the ability to replicate and predict material response to a fair degree thanks to the physically motivated mechanisms it is built on. An example study is also presented to illustrate the possible effect different reduction schedules could have on the through-thickness material state and the ability to assess these effects based on finite element simulations.

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Authors and Affiliations

  1. CSIR Modelling and Digital Science, Meiring Naudé Road, Pretoria, 0184, South Africa

    G. J. Jansen Van Rensburg

  2. Department of Mechanical and Aeronautical Engineering, University of Pretoria, Lynnwood Road, Pretoria, 0083, South Africa

    S. Kok & D. N. Wilke

Authors
  1. G. J. Jansen Van Rensburg
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  2. S. Kok
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  3. D. N. Wilke
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Corresponding author

Correspondence to G. J. Jansen Van Rensburg.

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Manuscript submitted October 26, 2016.

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Jansen Van Rensburg, G.J., Kok, S. & Wilke, D.N. Steel Alloy Hot Roll Simulations and Through-Thickness Variation Using Dislocation Density-Based Modeling. Metall Mater Trans B 48, 2631–2648 (2017). https://doi.org/10.1007/s11663-017-1024-7

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  • DOI: https://doi.org/10.1007/s11663-017-1024-7

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