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Title: Multi-modal STEM-based tomography of HT-9 irradiated in FFTF

Abstract

Under irradiation, point defects and defect clusters can agglomerate to form extended two and three dimensional (2D/3D) defects. The formation of defects can be synergistic in nature with one defect or defect-type influencing the formation and/or evolution of another. The resul is a need exists to perform advanced characterization where microstructures are accurately reproduced in 3D. Here, HT-9 neutron irradiated in the FFTF was used to evaluate the ability of multi-tilt STEM-based tomography to reproduce the fine-scale radiation-induced microstructure. High-efficiency STEM-EDS was used to provide both structural and chemical information during the 3D reconstruction. The results show similar results to a previous two-tilt tomography study on the same material; the α' phase is denuded around the Ni-Si-Mn rich G-phase and cavities. It is concluded both tomography reconstruction techniques are readily viable and could add significant value to the advanced characterization capabilities for irradiated materials.

Authors:
ORCiD logo [1];  [2];  [2];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1439930
Report Number(s):
ORNL/SPR-2018/869
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Field, Kevin G., Eftink, Benjamin Paul, Saleh, Tarik A., and Maloy, S A. Multi-modal STEM-based tomography of HT-9 irradiated in FFTF. United States: N. p., 2018. Web. doi:10.2172/1439930.
Field, Kevin G., Eftink, Benjamin Paul, Saleh, Tarik A., & Maloy, S A. Multi-modal STEM-based tomography of HT-9 irradiated in FFTF. United States. doi:10.2172/1439930.
Field, Kevin G., Eftink, Benjamin Paul, Saleh, Tarik A., and Maloy, S A. Tue . "Multi-modal STEM-based tomography of HT-9 irradiated in FFTF". United States. doi:10.2172/1439930. https://www.osti.gov/servlets/purl/1439930.
@article{osti_1439930,
title = {Multi-modal STEM-based tomography of HT-9 irradiated in FFTF},
author = {Field, Kevin G. and Eftink, Benjamin Paul and Saleh, Tarik A. and Maloy, S A.},
abstractNote = {Under irradiation, point defects and defect clusters can agglomerate to form extended two and three dimensional (2D/3D) defects. The formation of defects can be synergistic in nature with one defect or defect-type influencing the formation and/or evolution of another. The resul is a need exists to perform advanced characterization where microstructures are accurately reproduced in 3D. Here, HT-9 neutron irradiated in the FFTF was used to evaluate the ability of multi-tilt STEM-based tomography to reproduce the fine-scale radiation-induced microstructure. High-efficiency STEM-EDS was used to provide both structural and chemical information during the 3D reconstruction. The results show similar results to a previous two-tilt tomography study on the same material; the α' phase is denuded around the Ni-Si-Mn rich G-phase and cavities. It is concluded both tomography reconstruction techniques are readily viable and could add significant value to the advanced characterization capabilities for irradiated materials.},
doi = {10.2172/1439930},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

Technical Report:

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