Molecular dynamics characterization of thermodynamic and mechanical properties of Pu as dependent upon alloying additions and defects concentration. Part I

Autor:	A.V. Karavaev, Dean L. Preston, S.I. Samarin, M. A. Zocher, F.A. Sapozhnikov, V.V. Dremov
Rok vydání:	2009
Předmět:	Arrhenius equation Nuclear and High Energy Physics Chemistry Annealing (metallurgy) Alloy Thermal fluctuations Thermodynamics Radiation engineering.material Grain size symbols.namesake Molecular dynamics Nuclear Energy and Engineering engineering symbols General Materials Science
Zdroj:	Journal of Nuclear Materials. 385:79-82
ISSN:	0022-3115
DOI:	10.1016/j.jnucmat.2008.10.037
Popis:	The paper presents results of molecular dynamics (MD) simulations which were performed to investigate mobility of defects in the δ-PuGa alloy. The defects diffuse through thermal fluctuations and MD results provided parameters for the Arrhenius law describing defect diffusion versus temperature. On the basis of this information a model of radiation defect accumulation allowing for different types of defects and grain size was constructed.The annealing of the defects at elevated temperatures and the effect of accelerated ageing due to adding small quantities of Pu-238 upon defect accumulation were evaluated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::75fc8a2a46fd7663d2e952ab8e736938 https://doi.org/10.1016/j.jnucmat.2008.10.037 Zobrazit plný text záznamu Full Text from ScienceDirect