Ideal sinks are not always ideal. Radiation damage accumulation in nanocomposites

Uberuaga, Blas Pedro; Choudhury, Samrat; Caro, Alfredo

doi:10.1016/j.jnucmat.2014.11.073

Title: Ideal sinks are not always ideal. Radiation damage accumulation in nanocomposites

Journal Article · Thu Nov 27 00:00:00 EST 2014 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2014.11.073· OSTI ID:1215537

Uberuaga, Blas Pedro ^[1]; Choudhury, Samrat ^[1]; Caro, Alfredo ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Designing radiation tolerant materials is one of the primary challenges associated with advanced nuclear energy systems. One attractive route that has received much attention world-wide is to introduce a high density of sinks, often in the form of interfaces or secondary phases. Here, we develop a simple model of such nanocomposites and examine the ramifications of various factors on the overall radiation stability of the material. In particular, we determine how the distribution of secondary phases, the relative sink strength of those phases, and the irradiation temperature influence the radiation tolerance of the matrix. We find that the best scenario is one in which the sinks have intermediate strength, transiently trapping defects before releasing them back into the matrix.This provides new insight into the optimal properties of nanocomposites for radiation damage environments.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Materials at Irradiation and Mechanical Extremes (CMIME); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC52-06NA25396; 2008LANL1026

OSTI ID:: 1215537

Alternate ID(s):: OSTI ID: 1246613

Report Number(s):: LA-UR-14-28837; PII: S0022311514008769; TRN: US1500720

Journal Information:: Journal of Nuclear Materials, Vol. 462, Issue C; ISSN 0022-3115

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 13 works

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