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Title: Influence of crystal orientation and ion bombardment on the nitrogen diffusivity in single-crystalline austenitic stainless steel

Abstract

The nitrogen diffusivity in single-crystalline AISI 316L austenitic stainless steel (ASS) during ion nitriding has been investigated at different crystal orientations ((001), (110), (111)) under variations of ion flux (0.3-0.7 mA cm{sup -2}), ion energy (0.5-1.2 keV), and temperature (370-430 deg. C). The nitrogen depth profiles obtained from nuclear reaction analysis are in excellent agreement with fits using the model of diffusion under the influence of traps, from which diffusion coefficients were extracted. At fixed ion energy and flux, the diffusivity varies by a factor up to 2.5 at different crystal orientations. At (100) orientation, it increases linearly with increasing ion flux or energy. The findings are discussed on the basis of atomistic mechanisms of interstitial diffusion, potential lattice distortions, local decomposition, and ion-induced lattice vibrational excitations.

Authors:
; ;  [1]
  1. Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), P.O. Box 510119, Dresden 01314 (Germany)
Publication Date:
OSTI Identifier:
22036742
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 110; Journal Issue: 7; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; DECOMPOSITION; DIFFUSION; EXCITATION; INTERSTITIALS; ION BEAMS; KEV RANGE; LATTICE VIBRATIONS; MONOCRYSTALS; NITRIDATION; NITROGEN IONS; NUCLEAR REACTION ANALYSIS; POTENTIALS; STAINLESS STEEL-316L; SURFACE HARDENING; TEMPERATURE DEPENDENCE; TRAPS

Citation Formats

Martinavicius, A., Abrasonis, G., and Moeller, W. Influence of crystal orientation and ion bombardment on the nitrogen diffusivity in single-crystalline austenitic stainless steel. United States: N. p., 2011. Web. doi:10.1063/1.3646493.
Martinavicius, A., Abrasonis, G., & Moeller, W. Influence of crystal orientation and ion bombardment on the nitrogen diffusivity in single-crystalline austenitic stainless steel. United States. doi:10.1063/1.3646493.
Martinavicius, A., Abrasonis, G., and Moeller, W. Sat . "Influence of crystal orientation and ion bombardment on the nitrogen diffusivity in single-crystalline austenitic stainless steel". United States. doi:10.1063/1.3646493.
@article{osti_22036742,
title = {Influence of crystal orientation and ion bombardment on the nitrogen diffusivity in single-crystalline austenitic stainless steel},
author = {Martinavicius, A. and Abrasonis, G. and Moeller, W.},
abstractNote = {The nitrogen diffusivity in single-crystalline AISI 316L austenitic stainless steel (ASS) during ion nitriding has been investigated at different crystal orientations ((001), (110), (111)) under variations of ion flux (0.3-0.7 mA cm{sup -2}), ion energy (0.5-1.2 keV), and temperature (370-430 deg. C). The nitrogen depth profiles obtained from nuclear reaction analysis are in excellent agreement with fits using the model of diffusion under the influence of traps, from which diffusion coefficients were extracted. At fixed ion energy and flux, the diffusivity varies by a factor up to 2.5 at different crystal orientations. At (100) orientation, it increases linearly with increasing ion flux or energy. The findings are discussed on the basis of atomistic mechanisms of interstitial diffusion, potential lattice distortions, local decomposition, and ion-induced lattice vibrational excitations.},
doi = {10.1063/1.3646493},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 7,
volume = 110,
place = {United States},
year = {2011},
month = {10}
}