Mass-transport driven by surface instabilities under high-flux, low-energy nitrogen ion irradiation at elevated temperatures |
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| Authors: | L Pranevicius LL PraneviciusD Milcius S MuzardC Templier J-P Riviere |
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| Affiliation: | a Vytautas Magnus University, 8 Vileikos St., LT-3035 Kaunas, Lithuaniab Lithuanian Energy Institute, 3 Breslaujos St., LT-3035 Kaunas, Lithuaniac Laboratoire de Métallurgie Physique, Université de Poitiers, Bd. Marie et Pierre CURIE, B.P. 30179, 86962 Futuroscope Chasseneuil Cedex, France |
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| Abstract: | Flux effects in ion nitrided AISI 304 stainless steel have been investigated in an attempt to understand the mechanism of nitrogen transport. It is concluded that an interaction between a highly activated surface layer, the internal interfaces and the bulk is critical. Under conditions of non-equilibrium present on the surface, the nitrogen atoms are driven into the grain boundaries and highly compressive stress is formed. The stress relaxation processes initiate plastic flow of atoms in the grains and a corresponding flow of nitrogen atoms. |
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| Keywords: | Ion nitriding Surface instabilities Compressive stress Stress relaxation Nitrogen transport |
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