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

  • Tim Krämer
  • Lena Eisenhut
  • Lionel Germain
  • Daniel Rupp
  • Eric Detemple
  • Christian Motz
Article
  • 23 Downloads

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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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  • Tim Krämer
    • 1
  • Lena Eisenhut
    • 1
  • Lionel Germain
    • 2
    • 3
  • Daniel Rupp
    • 4
  • Eric Detemple
    • 4
  • Christian Motz
    • 1
  1. 1.Department for Materials Science and EngineeringSaarland UniversitySaarbrückenGermany
  2. 2.Laboratoire LEM3UMR CNRS 7239, Université de LorraineMetzFrance
  3. 3.Laboratory of Excellence for Design of Alloy Metals for Low-mass Structures (‘DAMAS’ Labex)University de LorraineLorraineFrance
  4. 4.DillingerDillingenGermany

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