| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Components
|
| Presentation Title |
Probing the Mechanical Behavior of Irradiated Materials through Micromechanical Testing |
| Author(s) |
Sezer Ozerinc |
| On-Site Speaker (Planned) |
Sezer Ozerinc |
| Abstract Scope |
Combining the recent advances in micromechanical testing with accelerated ion beam testing capabilities provide new opportunities for gaining insight into the mechanical behavior of materials under irradiation conditions. We have developed an in-situ irradiation-induced creep setup that enables direct measurements on micropillar specimens under MeV-heavy ion irradiation. The results show that irradiation-induced creep is mediated by point defects in a wide range of amorphous materials. We also probe irradiation-induced effects in nanostructures, which provides a deeper understanding of interface-dominated mechanical behavior. MeV-heavy ion irradiation on Cu-Nb nanolayers results in a competition between ion beam-induced mixing and phase separation. As irradiation temperature decreases, the effect of mixing starts to dominate, forming rougher interfaces. Micropillar compression on these irradiated specimens shows that ion-beam mixing enhances the shear strength of the interface. The findings quantify the mechanical behavior of irradiated interfaces through direct measurements for the first time in the literature. |
| Proceedings Inclusion? |
Planned: |