Temperature threshold for preferential bubble formation on grain boundaries in tungsten under in-situ helium irradiation
Abstract
Understanding a material's radiation tolerance requires examining its performance under different irradiation conditions. In this work, we investigate the radiation tolerance in terms of helium bubble damage in tungsten irradiated in-situ with 16 keV helium at 1073 K and 1223 K. Damage evolution represented by helium bubble density, size and total change in volume in the grain matrices and the grain boundaries are quantified as a function of fluence. Preferential large bubble formation and a higher change in volume on the grain boundaries occurred at 1223 K, suggesting faster migration of certain helium-vacancy complexes as confirmed by a diffusion-reaction model.
- Authors:
-
[2];
[2];
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Stony Brook Univ., NY (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy; USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); G. T. Seaborg In- stitute; USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR). Scientific Discovery through Advanced Computing (SciDAC)
- OSTI Identifier:
- 1641728
- Alternate Identifier(s):
- OSTI ID: 1595165; OSTI ID: 1657131
- Report Number(s):
- LA-UR-19-29529
Journal ID: ISSN 1359-6462; 160843
- Grant/Contract Number:
- AC02-06CH11357; AC07-05ID14517; 1810040; SC0008875; 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scripta Materialia
- Additional Journal Information:
- Journal Volume: 180; Journal ID: ISSN 1359-6462
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Grain boundaries; Implantation; In-situ; Helium-vacancy complexes; Electron microscopy
Citation Formats
El-Atwani, O., Cunningham, W. S., Perez, D., Martinez, E., Trelewicz, J. R., Li, M., and Maloy, S. A. Temperature threshold for preferential bubble formation on grain boundaries in tungsten under in-situ helium irradiation. United States: N. p., 2020.
Web. doi:10.1016/j.scriptamat.2020.01.013.
El-Atwani, O., Cunningham, W. S., Perez, D., Martinez, E., Trelewicz, J. R., Li, M., & Maloy, S. A. Temperature threshold for preferential bubble formation on grain boundaries in tungsten under in-situ helium irradiation. United States. https://doi.org/10.1016/j.scriptamat.2020.01.013
El-Atwani, O., Cunningham, W. S., Perez, D., Martinez, E., Trelewicz, J. R., Li, M., and Maloy, S. A. Mon .
"Temperature threshold for preferential bubble formation on grain boundaries in tungsten under in-situ helium irradiation". United States. https://doi.org/10.1016/j.scriptamat.2020.01.013. https://www.osti.gov/servlets/purl/1641728.
@article{osti_1641728,
title = {Temperature threshold for preferential bubble formation on grain boundaries in tungsten under in-situ helium irradiation},
author = {El-Atwani, O. and Cunningham, W. S. and Perez, D. and Martinez, E. and Trelewicz, J. R. and Li, M. and Maloy, S. A.},
abstractNote = {Understanding a material's radiation tolerance requires examining its performance under different irradiation conditions. In this work, we investigate the radiation tolerance in terms of helium bubble damage in tungsten irradiated in-situ with 16 keV helium at 1073 K and 1223 K. Damage evolution represented by helium bubble density, size and total change in volume in the grain matrices and the grain boundaries are quantified as a function of fluence. Preferential large bubble formation and a higher change in volume on the grain boundaries occurred at 1223 K, suggesting faster migration of certain helium-vacancy complexes as confirmed by a diffusion-reaction model.},
doi = {10.1016/j.scriptamat.2020.01.013},
journal = {Scripta Materialia},
number = ,
volume = 180,
place = {United States},
year = {2020},
month = {1}
}
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