Auger electron spectroscopy study of alloy 718 and 304L stainless steel irradiated with 800 MeV protons

Autor:	M. Hernández-Mayoral, M Garcı́a-Mazarı́o, A. M. Lancha
Rok vydání:	2001
Předmět:	Nuclear and High Energy Physics Auger electron spectroscopy Materials science Alloy Metallurgy Niobium chemistry.chemical_element Intergranular corrosion engineering.material Microstructure Auger Nickel Nuclear Energy and Engineering chemistry engineering General Materials Science Grain boundary
Zdroj:	Journal of Nuclear Materials. 296:192-202
ISSN:	0022-3115
DOI:	10.1016/s0022-3115(01)00518-9
Popis:	It is well known that radiation produces changes in materials microstructure such as formation of defects, dissolution and redistribution of secondary phases, precipitation of new phases, etc. and changes in the grain boundary microchemistry by a process known as radiation-induced segregation (RIS). This paper describes the grain boundary microchemical characterization of alloy 718 and 304L stainless steel irradiated with high-energy protons at Los Alamos Neutron Science Center (LANSCE), performed by means of Auger electron spectroscopy (AES). In addition, non-irradiated alloy 718 was characterized as reference. The Auger results showed that as a consequence of exposure to proton radiation, the changes observed in alloy 718 were the disappearance of the nickel and niobium rich grain boundaries precipitates and RIS of the major alloying elements (nickel to grain boundaries, and chromium and iron away from grain boundaries). On the other hand, in irradiated AISI 304L no differences were observed between intergranular and transgranular areas.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6028abf5cebe1a9d031216c55e190875 https://doi.org/10.1016/s0022-3115(01)00518-9 Zobrazit plný text záznamu Full Text from ScienceDirect