Grain boundary segregation of phosphorus and molybdenum in 2.25Cr-1Mo steel

Rengen Ding, John Knott

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2 Citations (Scopus)


Segregation of phosphorus and molybdenum to grain boundaries in a commercial grade of 2.25Cr-1Mo steel subjected to different heat treatments has been examined using a field emission gun scanning transmission electron microscope with energy dispersive X-ray microanalysis. The results indicate that P and Mo concentrations at prior austenite grain boundaries increase with aging time. This follows the prediction of McLean's equilibrium segregation model, when modified to take account of the interaction energy between phosphorus and molybdenum.
Original languageEnglish
Pages (from-to)1189-1194
Number of pages6
JournalMaterials Science and Technology
Issue number10
Publication statusPublished - 1 Oct 2008


  • Grain boundaries
  • Segregation
  • Molybdenum
  • Phosphorus
  • Steel


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