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Journal of Materials Science

, Volume 44, Issue 2, pp 632–638 | Cite as

Pearlite in hypoeutectoid iron–nitrogen binary alloys

  • X. C. Xiong
  • A. RedjaïmiaEmail author
  • M. Gouné
Article

Abstract

In this study, hypoeutectoid Fe–N binary specimens have been prepared by gas nitriding pure iron in austenite domain at 840 °C. The slow cooling of these specimens led to the α-ferrite + γ′-Fe4N pearlitic microstructure which is similar to the pearlite in Fe–C binary system. This pearlitic microstructure has been characterized by electron microscopy. The crystal structure of the γ′-Fe4N nitride has been identified by electron microdiffraction and the Nishiyama–Wassermann (N–W) and near Kurdjumov–Sachs (K–S) orientation relationships have been found between the α-ferrite and the γ′-Fe4N.

Keywords

Ferrite Austenite Pearlite Orientation Relationship Interlamellar Spacing 

Notes

Acknowledgements

This work is financially supported by ArcelorMittal SA. One of the authors (A. R.) is grateful to Dr A. Handaj for helpful discussions.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Laboratoire de Science et Génie des SurfacesNancy-Université, CNRSNancyFrance
  2. 2.ArcelorMittal SAMaizieres-les-MetzFrance

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