Isotope exchange investigation of nitrogen redistribution in expanded austenite

Thomas Lundin Christiansen, M. Drouet, A. Martinavičius, Marcel A. J. Somers

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Sequential plasma and gaseous nitriding of Fe–18Cr–10Ni–3Mo stainless steel at 390°C with 14N and 15N isotopes followed by denitriding in flowing hydrogen was investigated. Redistribution of plasma-inserted nitrogen atoms (15N) by subsequent gaseous nitriding (14N) was observed. Denitriding after plasma- and gaseous nitriding resulted in predominant retraction of 14N, and only a minor amount of 15N. The nitrogen isotope diffusion behaviour is explained by two different states of nitrogen bonding and short-range ordering between nitrogen and chromium.
Original languageEnglish
JournalScripta Materialia
Volume69
Issue number8
Pages (from-to)582-585
ISSN1359-6462
DOIs
Publication statusPublished - 2013

Keywords

  • Nitriding
  • Nuclear reaction analysis
  • X-ray diffraction (XRD)
  • Stainless steel

Cite this

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title = "Isotope exchange investigation of nitrogen redistribution in expanded austenite",
abstract = "Sequential plasma and gaseous nitriding of Fe–18Cr–10Ni–3Mo stainless steel at 390°C with 14N and 15N isotopes followed by denitriding in flowing hydrogen was investigated. Redistribution of plasma-inserted nitrogen atoms (15N) by subsequent gaseous nitriding (14N) was observed. Denitriding after plasma- and gaseous nitriding resulted in predominant retraction of 14N, and only a minor amount of 15N. The nitrogen isotope diffusion behaviour is explained by two different states of nitrogen bonding and short-range ordering between nitrogen and chromium.",
keywords = "Nitriding, Nuclear reaction analysis, X-ray diffraction (XRD), Stainless steel",
author = "Christiansen, {Thomas Lundin} and M. Drouet and A. Martinavičius and Somers, {Marcel A. J.}",
year = "2013",
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language = "English",
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journal = "Scripta Materialia",
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publisher = "Pergamon Press",
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Isotope exchange investigation of nitrogen redistribution in expanded austenite. / Christiansen, Thomas Lundin; Drouet, M.; Martinavičius, A.; Somers, Marcel A. J.

In: Scripta Materialia, Vol. 69, No. 8, 2013, p. 582-585.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Isotope exchange investigation of nitrogen redistribution in expanded austenite

AU - Christiansen, Thomas Lundin

AU - Drouet, M.

AU - Martinavičius, A.

AU - Somers, Marcel A. J.

PY - 2013

Y1 - 2013

N2 - Sequential plasma and gaseous nitriding of Fe–18Cr–10Ni–3Mo stainless steel at 390°C with 14N and 15N isotopes followed by denitriding in flowing hydrogen was investigated. Redistribution of plasma-inserted nitrogen atoms (15N) by subsequent gaseous nitriding (14N) was observed. Denitriding after plasma- and gaseous nitriding resulted in predominant retraction of 14N, and only a minor amount of 15N. The nitrogen isotope diffusion behaviour is explained by two different states of nitrogen bonding and short-range ordering between nitrogen and chromium.

AB - Sequential plasma and gaseous nitriding of Fe–18Cr–10Ni–3Mo stainless steel at 390°C with 14N and 15N isotopes followed by denitriding in flowing hydrogen was investigated. Redistribution of plasma-inserted nitrogen atoms (15N) by subsequent gaseous nitriding (14N) was observed. Denitriding after plasma- and gaseous nitriding resulted in predominant retraction of 14N, and only a minor amount of 15N. The nitrogen isotope diffusion behaviour is explained by two different states of nitrogen bonding and short-range ordering between nitrogen and chromium.

KW - Nitriding

KW - Nuclear reaction analysis

KW - X-ray diffraction (XRD)

KW - Stainless steel

U2 - 10.1016/j.scriptamat.2013.07.001

DO - 10.1016/j.scriptamat.2013.07.001

M3 - Journal article

VL - 69

SP - 582

EP - 585

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

IS - 8

ER -