About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Defects and Interfaces: Modeling and Experiments
|
Presentation Title |
Characterization of Implanted He during the Annealing of Co-Deposited Cu-W Nanocomposites |
Author(s) |
Griffin Turner, Digvijay Yadav, Sisi Xiang, Jon Kevin Baldwin, Michael J. Demkowicz, Kelvin Y. Xie |
On-Site Speaker (Planned) |
Griffin Turner |
Abstract Scope |
Accumulation of helium in irradiated metals is known to occur through formation of helium bubble clusters. It has been previously observed that FCC-BCC phase boundaries decrease the retention rate of helium in irradiated materials. It is currently unknown what specific mechanisms encourage helium depletion in systems with FCC-BCC phase boundaries. In this work, we conduct ex situ and in situ heating experiments on co-deposited copper and tungsten thin films that were implanted with helium. For both ex situ and in situ heating experiments, the samples were heated at 400°C for various time periods. Using bright field TEM and STEM imaging modes allows us to more easily view helium clusters in both copper and tungsten layers during these heating experiments. We focus on the migration, coarsening, and redistribution of helium bubbles. Emphasis was also given to the effect of the FCC-BCC interface curvature on helium bubble cluster evolution. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Nuclear Materials, Thin Films and Interfaces |