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Title: Impact of composition modification induced by ion beam Coulomb-drag effects on the nanoindentation hardness of HT9

Abstract

Accelerator-based ion irradiation is commonly used to simulate neutron damage, in lieu of neutron irradiation due to limited availability of fast flux facilities and little to no activation of the samples. Neutron atypical effects, however, must be recognized and their impact minimized in order to achieve the most accurate microstructural evolution under ion bombardment. Mechanical property changes, which arise from the synergy of numerous radiation-induced changes, are especially susceptible to these neutron atypical effects. Of these effects, a recently studied neutron atypical effect, arising from Coulomb-drag of vacuum contaminants and subsequent compositional alteration, was shown to substantially suppress swelling. Through the use of an ion beam filtering system, the resulting void swelling was shown to closely match neutron irradiation data. In this study, the impact of compositional modification via Coulomb-drag on the mechanical property changes is examined through the use of nanoindentation on a ferritic/martensitic alloy, HT9, irradiated with and without the use of the ion beam filtering system.

Authors:
ORCiD logo [1];  [2];  [3];  [2];  [2]; ORCiD logo [1];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Texas A & M Univ., College Station, TX (United States). Dept. of Nuclear Engineering
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Sabanci Univ., Istanbul (Turkey). Integrated Manufacturing Center
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1499354
Report Number(s):
LA-UR-18-28292
Journal ID: ISSN 0168-583X
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Additional Journal Information:
Journal Volume: 444; Journal Issue: C; Journal ID: ISSN 0168-583X
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 36 MATERIALS SCIENCE; ion beam processing; ion implantation; nanoindentation

Citation Formats

Gigax, Jonathan Gregory, Kim, Hyosim, Aydogan, Eda, Price, Lloyd M, Wang, Xuemei, Maloy, Stuart Andrew, Garner, Frank A, and Shao, Lin. Impact of composition modification induced by ion beam Coulomb-drag effects on the nanoindentation hardness of HT9. United States: N. p., 2019. Web. doi:10.1016/j.nimb.2018.12.051.
Gigax, Jonathan Gregory, Kim, Hyosim, Aydogan, Eda, Price, Lloyd M, Wang, Xuemei, Maloy, Stuart Andrew, Garner, Frank A, & Shao, Lin. Impact of composition modification induced by ion beam Coulomb-drag effects on the nanoindentation hardness of HT9. United States. doi:10.1016/j.nimb.2018.12.051.
Gigax, Jonathan Gregory, Kim, Hyosim, Aydogan, Eda, Price, Lloyd M, Wang, Xuemei, Maloy, Stuart Andrew, Garner, Frank A, and Shao, Lin. Fri . "Impact of composition modification induced by ion beam Coulomb-drag effects on the nanoindentation hardness of HT9". United States. doi:10.1016/j.nimb.2018.12.051.
@article{osti_1499354,
title = {Impact of composition modification induced by ion beam Coulomb-drag effects on the nanoindentation hardness of HT9},
author = {Gigax, Jonathan Gregory and Kim, Hyosim and Aydogan, Eda and Price, Lloyd M and Wang, Xuemei and Maloy, Stuart Andrew and Garner, Frank A and Shao, Lin},
abstractNote = {Accelerator-based ion irradiation is commonly used to simulate neutron damage, in lieu of neutron irradiation due to limited availability of fast flux facilities and little to no activation of the samples. Neutron atypical effects, however, must be recognized and their impact minimized in order to achieve the most accurate microstructural evolution under ion bombardment. Mechanical property changes, which arise from the synergy of numerous radiation-induced changes, are especially susceptible to these neutron atypical effects. Of these effects, a recently studied neutron atypical effect, arising from Coulomb-drag of vacuum contaminants and subsequent compositional alteration, was shown to substantially suppress swelling. Through the use of an ion beam filtering system, the resulting void swelling was shown to closely match neutron irradiation data. In this study, the impact of compositional modification via Coulomb-drag on the mechanical property changes is examined through the use of nanoindentation on a ferritic/martensitic alloy, HT9, irradiated with and without the use of the ion beam filtering system.},
doi = {10.1016/j.nimb.2018.12.051},
journal = {Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms},
number = C,
volume = 444,
place = {United States},
year = {2019},
month = {2}
}

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This content will become publicly available on February 15, 2020
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