| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials for Nuclear Applications
|
| Presentation Title |
Understanding Defect Recovery and Accommodation and Their Implications on Mechanical Performance in Irradiated Nanocomposite Materials |
| Author(s) |
Michael Wurmshuber, David Frazer, Mehdi Balooch, Inas Issa, Andrea Bachmaier, Peter Hosemann, Daniel Kiener |
| On-Site Speaker (Planned) |
Michael Wurmshuber |
| Abstract Scope |
Nanostructured materials are a promising candidate for future application in highly irradiative environments, as the high density of interfaces within the material can act as sinks for radiation-induced lattice defects. This work focuses on the identification of the exact mechanisms of defect recovery, accommodation and evolution in irradiated composite materials. Nanostructured Cu-Fe-Ag alloys in three different conditions (ultra-fine grained, nanocrystalline and nanoporous) are fabricated and their response to irradiation with protons and helium ions is captured using advanced microscopy and nanoindentation testing. Qualitative models are established, linking the type and density of interfaces to the predominant defect mechanisms for both classical radiation damage and helium bubble formation and growth. By using these models to understand the response in defect structure and, consequently, mechanical properties upon irradiation of nanostructured materials, one more step towards the development and deployment of novel radiation-tolerant materials has been taken. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Composites, Mechanical Properties |