Journal article
The influence of solute on irradiation damage evolution in nanocrystalline thin-films
Journal of nuclear materials, v 543, 152616
Jan 2021
Abstract
•Irradiation induced defect densities did not demonstrate an immediate correlation to grain size.•Sample composition was found to affect defect evolution in nanocrystalline systems.•Average defect cluster size ubiquitously decreases as grain size decreases.•Solute addition inhibits defect kinetics and impedes defect agglomeration, i.e. smaller defect cluster size.
Grain boundaries (GBs) are considered sinks where mobile defects are attracted and annihilated thereby hampering irradiation damage accumulation. Nanocrystalline (NC) metals characteristically have greater densities of GBs relative to their coarse-grained counterparts hence they are postulated to provide enhanced resistance to irradiation damage.
The use of alloying as a means to impart synergistic properties such as corrosion resistance, increased toughness, or improved conductivity is well studied, yet the cooperative effects of solute addition and grain size in the nano-regime is not well understood. In this study, a combination of in situ ion irradiation, transmission electron microscopy (TEM), and automated crystal orientation mapping (ACOM) on model Ni, NiCr, Fe, and FeCr NC thin-films are used to provide experimental evidence that grain size and irradiation induced defect morphology (defect density and size) are not directly correlated due to defect agglomeration, annihilation at sinks, and saturation, while the addition of solute impedes defect mobility, altering the final damage state.
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Details
- Title
- The influence of solute on irradiation damage evolution in nanocrystalline thin-films
- Creators
- James E. Nathaniel - Drexel UniversityGregory A. Vetterick - Drexel UniversityOsman El-Atwani - Drexel UniversityAsher Leff - Drexel UniversityJon Kevin Baldwin - Los Alamos National LaboratoryPete Baldo - Argonne National LaboratoryMarquis A. Kirk - Argonne National LaboratoryKhalid Hattar - Sandia National Laboratories CaliforniaMitra L. Taheri - Drexel University
- Publication Details
- Journal of nuclear materials, v 543, 152616
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000601304700004
- Scopus ID
- 2-s2.0-85095455732
- Other Identifier
- 991019330795904721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nuclear Science & Technology