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Metallurgical and Materials Transactions A

, Volume 48, Issue 3, pp 1484–1490 | Cite as

Photoemission Electron Microscopy as a Tool for Studying Steel Grains

  • Peter RoeseEmail author
  • Christoph Keutner
  • Ulf Berges
  • Philipp Espeter
  • Carsten Westphal
Article
  • 364 Downloads

Abstract

Key properties of steel like stability, weldability, or ability for absorbing deformation energy are defined by their grain structure. The knowledge about their micrometer and submicrometer structure is of particular interest for tailor-cut macroscopic steel properties. We report on photoemission electron microscopy studies which in principle yield a higher magnification than comparable optical techniques. A flat surface without any topographic features was obtained by applying a non-etching preparation procedure. PEEM images showed very tiny phase islands embedded within a steel phase matrix. Furthermore, we developed an analysis procedure for PEEM images for dual-phase steels. As a result, it is possible to identify the individual work functions of different steel phases at the surface.

Keywords

Ferrite Austenite Martensite Work Function Pixel Count 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We would like to thank Dr. G. Müller of ThyssenKrupp for the provision of raw steel samples. The authors thank the DELTA staff for the support during beamtimes. This work was funded by the Land Nordrhein-Westfalen.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2016

Authors and Affiliations

  • Peter Roese
    • 1
    • 2
    Email author
  • Christoph Keutner
    • 1
    • 2
  • Ulf Berges
    • 1
    • 2
  • Philipp Espeter
    • 1
    • 2
  • Carsten Westphal
    • 1
    • 2
  1. 1.Experimentelle Physik I - Technische Universität DortmundDortmundGermany
  2. 2.DELTA - Technische Universität DortmundDortmundGermany

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