Evidence of a temperature transition for denuded zone formation in nanocrystalline Fe under He irradiation
Abstract
Nanocrystalline materials are radiation-tolerant materials’ candidates due to their high defect sink density. Here, nanocrystalline iron films were irradiated with 10 keV helium ions in situ in a transmission electron microscope at elevated temperatures. Grain-size-dependent bubble density changes and denuded zone occurrence were observed at 700 K, but not at 573 K. This transition, attributed to increased helium–vacancy migration at elevated temperatures, suggests that nanocrystalline microstructures are more resistant to swelling at 700 K due to decreased bubble density. Finally, denuded zone formation had no correlation with grain size and misorientation angle under the conditions studied.
- Authors:
-
- Department of Materials Science & Engineering, Drexel University, Philadelphia, PA USA
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, USA
- Department of Radiation Solid Interactions, Sandia National Laboratories, Albuquerque, NM, USA
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); Laboratory Directed Research and Development (LDRD
- OSTI Identifier:
- 1510150
- Alternate Identifier(s):
- OSTI ID: 1422929
- Report Number(s):
- LA-UR-17-31234
Journal ID: ISSN 2166-3831; 7
- Grant/Contract Number:
- AC04-94AL85000; AC52-06NA25396; SC0008274
- Resource Type:
- Journal Article: Published Article
- Journal Name:
- Materials Research Letters
- Additional Journal Information:
- Journal Name: Materials Research Letters Journal Volume: 5 Journal Issue: 3; Journal ID: ISSN 2166-3831
- Publisher:
- Informa UK Limited
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; He implantation; TEM; bubbles; denuded zones; grain boundary
Citation Formats
El-Atwani, O., Nathaniel, II, J. E., Leff, A. C., Baldwin, J. K., Hattar, K., and Taheri, M. L. Evidence of a temperature transition for denuded zone formation in nanocrystalline Fe under He irradiation. United Kingdom: N. p., 2016.
Web. doi:10.1080/21663831.2016.1243591.
El-Atwani, O., Nathaniel, II, J. E., Leff, A. C., Baldwin, J. K., Hattar, K., & Taheri, M. L. Evidence of a temperature transition for denuded zone formation in nanocrystalline Fe under He irradiation. United Kingdom. https://doi.org/10.1080/21663831.2016.1243591
El-Atwani, O., Nathaniel, II, J. E., Leff, A. C., Baldwin, J. K., Hattar, K., and Taheri, M. L. 2016.
"Evidence of a temperature transition for denuded zone formation in nanocrystalline Fe under He irradiation". United Kingdom. https://doi.org/10.1080/21663831.2016.1243591.
@article{osti_1510150,
title = {Evidence of a temperature transition for denuded zone formation in nanocrystalline Fe under He irradiation},
author = {El-Atwani, O. and Nathaniel, II, J. E. and Leff, A. C. and Baldwin, J. K. and Hattar, K. and Taheri, M. L.},
abstractNote = {Nanocrystalline materials are radiation-tolerant materials’ candidates due to their high defect sink density. Here, nanocrystalline iron films were irradiated with 10 keV helium ions in situ in a transmission electron microscope at elevated temperatures. Grain-size-dependent bubble density changes and denuded zone occurrence were observed at 700 K, but not at 573 K. This transition, attributed to increased helium–vacancy migration at elevated temperatures, suggests that nanocrystalline microstructures are more resistant to swelling at 700 K due to decreased bubble density. Finally, denuded zone formation had no correlation with grain size and misorientation angle under the conditions studied.},
doi = {10.1080/21663831.2016.1243591},
url = {https://www.osti.gov/biblio/1510150},
journal = {Materials Research Letters},
issn = {2166-3831},
number = 3,
volume = 5,
place = {United Kingdom},
year = {Tue Oct 18 00:00:00 EDT 2016},
month = {Tue Oct 18 00:00:00 EDT 2016}
}
Web of Science
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Works referencing / citing this record:
Direct Observation of Sink-Dependent Defect Evolution in Nanocrystalline Iron under Irradiation
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