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Grain boundary segregation in bright nitrided α-irons alloyed with chromium, molybdenum and silicon

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Abstract

Interfacial segregation in bright nitrided binary α-iron alloys containing 3.0 at% Cr, 2.4 at % Mo and 3.6 at % Si were studied by Auger electron spectroscopy. Chromium, molybdenum and silicon were found to segregate to interfaces in these alloys. Segregation of chromium and molybdenum is, however, partly reduced by the formation of clusters or precipitate between nitrogen and solute atoms. Segregation of silicon is slight owing to the repulsive interaction between silicon and nitrogen atoms. It was not found that such surface active elements as sulphur and phosphorus had segregated to the interfaces in the bright nitrided alloys studied.

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Author notes

  1. R. E. E. Pulkkinen

    Present address: Technical Research Centre of Finland, Metallurgy Laboratory, SF-02150, Espoo 15, Finland

Authors and Affiliations

  1. Department of Mining and Metallurgy Laboratory of Metal Working and Heat Treatment, Helsinki University of Technology, SF-02150, Espoo 15, Finland

    R. E. E. Pulkkinen

  2. Department of Physical Sciences, University of Turku, SF-20520, Turku 52, Finland

    M. Lähdeniemi

Authors
  1. R. E. E. Pulkkinen
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  2. M. Lähdeniemi
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Pulkkinen, R.E.E., Lähdeniemi, M. Grain boundary segregation in bright nitrided α-irons alloyed with chromium, molybdenum and silicon. J Mater Sci 18, 3421–3426 (1983). https://doi.org/10.1007/BF00544170

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  • DOI: https://doi.org/10.1007/BF00544170

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