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Title: Nano-Oxide-Dispersed Ferritic Steel for Fusion Energy Systems

The role of oxide nanoparticles in cavity formation of a nano-oxide-dispersed ferritic steel subjected to (Fe + He) dual-ion and (Fe + He + H) triple-ion irradiations has been studied using transmission electron microscopy to elucidate the synergistic effects of helium and hydrogen on radiation tolerance of nano-oxide-dispersed ferritic steel for fusion energy systems. The effect of oxide nanoparticles on suppressing radiation-induced void swelling is clearly revealed from the observation of preferred trapping of helium bubbles at oxide nanoparticles, which results in a unimodal distribution of cavities in the (Fe + He) dual-ion irradiatedspecimen. An adverse effect of hydrogen implantation, however, is revealed from the observation of a bimodal distribution of cavities with large and facetted voids in association with the formation of HFe 5O 8-based hydroxide in local regions of the (Fe + He + H) triple-ion irradiated specimen.
Authors:
 [1] ;  [1] ;  [2] ;  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of California, Berkeley, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-742960
Journal ID: ISSN 2059-8521; applab; 897866
Grant/Contract Number:
AC52-07NA27344; AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
MRS Advances
Additional Journal Information:
Journal Volume: 3; Journal Issue: 31; Journal ID: ISSN 2059-8521
Publisher:
Materials Research Society (MRS)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1458650
Alternate Identifier(s):
OSTI ID: 1471885

Hsiung, L. L., Tumey, S. J., Hoelzer, D. T., and Fluss, M. J.. Nano-Oxide-Dispersed Ferritic Steel for Fusion Energy Systems. United States: N. p., Web. doi:10.1557/adv.2018.202.
Hsiung, L. L., Tumey, S. J., Hoelzer, D. T., & Fluss, M. J.. Nano-Oxide-Dispersed Ferritic Steel for Fusion Energy Systems. United States. doi:10.1557/adv.2018.202.
Hsiung, L. L., Tumey, S. J., Hoelzer, D. T., and Fluss, M. J.. 2018. "Nano-Oxide-Dispersed Ferritic Steel for Fusion Energy Systems". United States. doi:10.1557/adv.2018.202.
@article{osti_1458650,
title = {Nano-Oxide-Dispersed Ferritic Steel for Fusion Energy Systems},
author = {Hsiung, L. L. and Tumey, S. J. and Hoelzer, D. T. and Fluss, M. J.},
abstractNote = {The role of oxide nanoparticles in cavity formation of a nano-oxide-dispersed ferritic steel subjected to (Fe + He) dual-ion and (Fe + He + H) triple-ion irradiations has been studied using transmission electron microscopy to elucidate the synergistic effects of helium and hydrogen on radiation tolerance of nano-oxide-dispersed ferritic steel for fusion energy systems. The effect of oxide nanoparticles on suppressing radiation-induced void swelling is clearly revealed from the observation of preferred trapping of helium bubbles at oxide nanoparticles, which results in a unimodal distribution of cavities in the (Fe + He) dual-ion irradiatedspecimen. An adverse effect of hydrogen implantation, however, is revealed from the observation of a bimodal distribution of cavities with large and facetted voids in association with the formation of HFe5O8-based hydroxide in local regions of the (Fe + He + H) triple-ion irradiated specimen.},
doi = {10.1557/adv.2018.202},
journal = {MRS Advances},
number = 31,
volume = 3,
place = {United States},
year = {2018},
month = {2}
}