DFT calculations of solute-vacancy binding in Zirconium-based Zr–Nb–Sn alloy

Autor: Lu Wu, Vasyl O. Kharchenko, Xianggang Kong, Dmitrii O. Kharchenko
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Nuclear Materials and Energy, Vol 32, Iss , Pp 101221- (2022)
Druh dokumentu: article
ISSN: 2352-1791
71734635
DOI: 10.1016/j.nme.2022.101221
Popis: The energetic properties of ternary Zr–Nb–Sn Zirconium-based alloy with concentration of dissolved alloying elements ∼1.5% are studied by using density functional theory. The possibility of alloying additions separated by different distances to dissolve/segregate in a host matrix is analyzed with the help of mixing energy and solute–solute binding energy. The ability of solutes to trap single vacancy is discussed by studying formation energy of a vacancy, located on a different distances from both solute atoms and the corresponding solute–solute–vacancy binding. This study provides an insight into the details of vacancy energetics in Zirconium-based alloys exploited in nuclear-power plants.
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