The effect of oversized solute additions on the microstructure of 316SS irradiated with 5 MeV Ni++ ions or 3.2 MeV protons

Autor:	Stephen M. Bruemmer, Gary S. Was, L. Fournier, Edward P. Simonen, Bulent H. Sencer, Jian Gan
Rok vydání:	2004
Předmět:	Nuclear and High Energy Physics Materials science Proton Radiochemistry chemistry.chemical_element Microstructure Radiation effect Ion Nickel Nuclear Energy and Engineering chemistry Transmission electron microscopy General Materials Science Irradiation Platinum
Zdroj:	Journal of Nuclear Materials. 325:94-106
ISSN:	0022-3115
Popis:	The effect of the oversized hafnium or platinum (0.3 at.%) solutes on the evolution of irradiated microstructure in 316SS was investigated. Irradiations were conducted with 5 MeV Ni-ions at 500 °C to doses up to 50 dpa or with 3.2 MeV protons at 400 °C to a dose of 2.5 dpa, and previous studies demonstrated that these irradiations are capable of producing similar irradiated microstructure and microchemistry relevant to LWR cores. Microstructures of 316SS, 316SS + 0.3 at.% Pt and 316SS + 0.3 at.% Hf were characterized using transmission electron microscopy. The addition of Hf showed a strong effect in suppressing radiation-induced microstructure evolution; no voids were observed at doses up to 50 dpa for Ni-ion irradiation and 2.5 dpa for proton irradiation. The mean diameter of the Frank loops in the Hf-doped samples is about 40% smaller than loops in 316SS. The microstructural examinations from both types of particle irradiation revealed that for 0.3 at.% Pt addition there is no beneficial effect on irradiated microstructure. The mechanisms for the role of oversize solute additions on the microstructure evolution are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::28834a99d84e8b2b411a6f0e65ddde6b https://doi.org/10.1016/j.jnucmat.2003.11.002 Zobrazit plný text záznamu Full Text from ScienceDirect