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Artículo

Behavior of nitrided and carburized AISI 904-L stainless steels under severe light ion beam irradiation with plasma focus

García Molleja, JavierIcon ; Milanese, Maria MagdalenaIcon ; Gomez, Bernardo Jose ArmandoIcon ; Moroso, Roberto LuisIcon ; Piccoli, M.; Niedbalski, Jorge JulioIcon ; Burgi, Juan MauelIcon ; Bemporad, E.; Feugeas, Jorge NestorIcon
Fecha de publicación: 06/2015
Editorial: John Wiley & Sons Ltd
Revista: Surface and Interface Analysis
ISSN: 0142-2421
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Físicas

Resumen

Superaustenitic stainless steels have become of growing interest in industrial and technological fields, but there is not a complete understanding on their fundamental properties and their performances. For this paper, AISI 904-L superaustenitic samples were nitrided and carburized in order to study the expanded austenite stability under severe deuterium and helium ion bombardment. Surface treatments were conducted using pulsed plasma glow discharges in a low pressure atmosphere, and a dense plasma focus device was used to irradiate the samples. Characterization techniques used were focused ion beam/SEM, energy-dispersive X-ray spectroscopy, and grazing incidence X-ray diffraction. Our results showed in carburized samples lattice expansion growth with the time treatment, but in nitrided samples, an expanded austenite reduction with time treatment was observed due to the formation of nitride nanoagglomerates. Moreover, this ion impingement provoked surface melting and a severe collision cascade, and a damaged bead located under the craters composed solely of minor alloying atoms. Furthermore, nitrided samples were more stable following ion bombardment than the carburized ones. When helium ions were used, the loss of expansion (triggered by diffusion processes of N or C to deeper regions) was more pronounced in the expanded austenite, but when deuterium ions were used to bombard the sample, there was a crystallite development of stressed austenite, which provoked a diffraction peak arousal at 43.3°.
Palabras clave: Crystalline Stability , Expanded Austenite , Ion Carburizing , Ion Nitriding , Plasma Focus , Superaustenitic Stainless Steels
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/51138
DOI: http://dx.doi.org/10.1002/sia.5770
URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/sia.5770
Colecciones
Articulos(IFIR)
Articulos de INST.DE FISICA DE ROSARIO (I)
Citación
García Molleja, Javier; Milanese, Maria Magdalena; Gomez, Bernardo Jose Armando; Moroso, Roberto Luis; Piccoli, M.; et al.; Behavior of nitrided and carburized AISI 904-L stainless steels under severe light ion beam irradiation with plasma focus; John Wiley & Sons Ltd; Surface and Interface Analysis; 47; 6; 6-2015; 728-737
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