| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
The Effect of Interface Curvature on the Distribution of Radiation-Induced Voids |
| Author(s) |
Griffin Turner, Digvijay Yadav, Emmeline Sheu, Yongqiang Wang, Jon Kevin Baldwin, Michael J Demkowicz, Kelvin Y Xie |
| On-Site Speaker (Planned) |
Griffin Turner |
| Abstract Scope |
We investigate the effect of interface curvature in Cu-Nb nanocomposites on the distribution of voids created by helium ion irradiation. A physical vapor deposited Nb-Cu-Nb tri-layer was annealed at 800°C, resulting in Cu-Nb interfaces with a range of different curvatures. A cross section of the sample was then lifted out with FIB and irradiated with helium ions (200 keV, 1.5 × 1017 ions/cm2 at 450°C) to induce voids visible in TEM. Compared to flat (zero curvature) interfaces, curved interfaces have narrower void depleted zones (VDZ) and lower void densities in the interface plane. We describe quantitative analyses to identify the physical origins of this curvature effect. Our findings inform the design of radiation-resistant nanocomposites through control of interface curvature. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Thin Films and Interfaces, Characterization |