Detecting Self-Ion Irradiation-Induced Void Swelling In Pure Copper Using Transient Grating Spectroscopy

Keywords

Ion beam; Irradiation; Surface acoustic wave; Transient grating spectroscopy; Void swelling

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.

Publication Date

2-15-2018

Publication Title

Acta Materialia

Volume

145

Number of Pages

496-503

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.actamat.2017.12.007

Socpus ID

85040017311 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85040017311

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