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Title: 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:
 [1]; ORCiD logo [2];  [1];  [1]; ORCiD logo [2];  [3];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Stony Brook Univ., NY (United States)
  3. 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:
Journal Article: 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:
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. doi: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. doi:10.1016/j.scriptamat.2020.01.013.
@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},
issn = {1359-6462},
number = ,
volume = 180,
place = {United States},
year = {2020},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on January 27, 2021
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