Journal
JOM
Volume 74, Issue 11, Pages 4094-4106Publisher
SPRINGER
DOI: 10.1007/s11837-022-05469-9
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Funding
- National Science Foundation [17-52636]
- US Department of Energy, Office of Nuclear Energy, through Nuclear Science User Facilities (NSUF) Rapid Turnaround Experiment (RTE) Award [18-1198]
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This study explored the effects of coupled deformation and irradiation extremes on Ta phase evolution in Cu-10at.%Ta nanocomposite. The findings suggest that after irradiation-induced dissolution of Ta nanoparticles, deformation-induced Ta nanoparticle nucleation and growth along grain boundaries may stabilize or rejuvenate the nanoparticles in extreme environments.
The objective of this study is to determine the effects of coupled deformation and irradiation extremes on Ta phase evolution in Cu-10at.%Ta nanocomposite. Heterophase nanocomposites with positive heat of mixing offer exceptional mechanical properties, high temperature performance, and irradiation tolerance. Here, we consider cooperative effects of irradiation and deformation on phase stability using transmission electron microscopy phase mapping during interrupted in situ indentation. Following irradiation-induced dissolution of Ta nanoparticles, deformation-induced Ta nanoparticle nucleation and growth occur along grain boundaries. This result shows promise that irradiation and deformation may be coupled to stabilize or rejuvenate Ta nanoparticles in extreme environments.
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