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Assessment of EBSD Analysis and Reconstruction Methods as a Tool for the Determination of Recrystallized Fractions in Hot-Deformed Austenitic Microstructures

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Abstract

The microstructural evolution of hot-deformed austenite during recrystallization was studied in a non-microalloyed low carbon steel and a low carbon steel, microalloyed with niobium and titanium. Double-hit compression tests were carried out to evaluate the isothermal recrystallization behavior. Specific deformation temperatures and interpass times were combined to produce characteristic recrystallization states by quenching the samples to a martensitic microstructure. The reconstruction software Merengue 2 was used to determine the prior austenite microstructure and evaluate the recrystallized fraction in the microstructure. The reconstruction is based on EBSD measurements of the martensitic microstructure. The determination of the recrystallized fraction was realized by evaluating the grain orientation spread. This work compares the results of both methods and estimates their uncertainties. It shows the potential of EBSD reconstruction methods to characterize different recrystallization states of low carbon steels out of EBSD data.

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Authors and Affiliations

  1. Department for Materials Science and Engineering, Saarland University, 66123, Saarbrücken, Germany

    Tim Krämer, Lena Eisenhut & Christian Motz

  2. Laboratoire LEM3, UMR CNRS 7239, Université de Lorraine, 57073, Metz, France

    Lionel Germain

  3. Laboratory of Excellence for Design of Alloy Metals for Low-mass Structures (‘DAMAS’ Labex), University de Lorraine, Lorraine, France

    Lionel Germain

  4. Dillinger, 66763, Dillingen, Germany

    Daniel Rupp & Eric Detemple

Authors
  1. Tim Krämer
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  2. Lena Eisenhut
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  3. Lionel Germain
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  4. Daniel Rupp
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  5. Eric Detemple
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  6. Christian Motz
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Correspondence to Lena Eisenhut.

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Manuscript submitted September 28, 2017.

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Krämer, T., Eisenhut, L., Germain, L. et al. Assessment of EBSD Analysis and Reconstruction Methods as a Tool for the Determination of Recrystallized Fractions in Hot-Deformed Austenitic Microstructures. Metall Mater Trans A 49, 2795–2802 (2018). https://doi.org/10.1007/s11661-018-4593-4

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  • DOI: https://doi.org/10.1007/s11661-018-4593-4

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