Detecting self-ion irradiation-induced void swelling in pure copper using transient grating spectroscopy
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AM14228_pre_print_1_MPS.pdf
Description
Main article after revisions
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1.36 MB
Format
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Checksum (MD5)
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Author(s)
Dennett, Cody Andrew
So, Kangpyo
Kushima, Akihiro
Buller, D.L.
Hattar, K.
Short, M.P.
Short, Michael Philip
Date Issued
February 2018
Journal
Acta Materialia
Publisher
Elsevier BV
Citation
Dennett, C. A. et al. "Detecting self-ion irradiation-induced void swelling in pure copper using transient grating spectroscopy." Acta Materialia 145 (February 2018): 496-503 © 2017 Acta Materialia Inc
Version
Original manuscript
Abstract
Irradiation-induced void swelling remains a major challenge to nuclear reactor operation. Swelling may take years to initiate and often results in rapid material property degradation once started. Alloy development for advanced nuclear systems will require rapid characterization of the swelling breakaway dose in new alloys, yet this capability does not yet exist. We demonstrate that transient grating spectroscopy (TGS) can detect void swelling in single crystal copper via changes in surface acoustic wave (SAW) velocity. Scanning transmission electron microscopy (STEM) links the TGS-observed changes with void swelling-induced microstructural evolution. These results are considered in the context of previous work to suggest that in situ TGS will be able to rapidly determine when new bulk materials begin void swelling, shortening alloy development and testing times.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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DOI of Published Version
https://doi.org/10.1016/j.actamat.2017.12.007
