Extended X-ray absorption fine structure investigation of nitrogen stabilized expanded austenite

Jette Oddershede, Thomas Christiansen, Kenny Ståhl, Marcel A. J. Somers

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

As-delivered austenitic stainless steel and nitrogen stabilized expanded austenite, both fully nitrided and denitrided (in H2), were investigated with Cr, Fe and Ni extended X-ray absorption fine structure. The data shows pronounced short-range ordering of Cr and N. For the denitrided specimen the N atoms remaining in the solid state after H2-reduction are trapped by Cr atoms. Quantitative interpretation in terms of the local distortions around Cr atoms and their N coordination number reveals that no Cr–N clusters or CrN platelets are present.
Original languageEnglish
JournalScripta Materialia
Volume62
Issue number5
Pages (from-to)290-293
ISSN1359-6462
DOIs
Publication statusPublished - 2010

Keywords

  • Materials characterization and modelling
  • Materials and energy storage

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