| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XI)
|
| Presentation Title |
N-42: Studying on the Role of Heterogeneous Interface in Graphene/Metal Composites for Enhancing the Irradiation Tolerance |
| Author(s) |
Kunming Yang, Yue Liu, Houyu Ma, Di Chen, Tongxiang Fan |
| On-Site Speaker (Planned) |
Kunming Yang |
| Abstract Scope |
High-dose, high-energy particle irradiation often induces severe microstructural damages in metals, thus leading to significant degradation of mechanical and physical properties. Heterogeneous interface in composites has proven to be ideal sinks for irradiation-induced defects. Herein, we use the graphene (Gr)/Cu composites as a model material to study the role of heterogeneous interface in Gr/metal composites for enhancing the irradiation tolerance. The results showed that the irradiation-induced defects prefer to migrate towards Gr/Cu interface instead of the high-angle Cu grain boundary. Besides, although the electrical resistivity (Ω) of composites increased after He+ implantation, the Ω increased magnitude significantly decreased when increasing the Gr content, manifesting remarkable enhanced irradiation tolerance. Apart from the strong defect sink ability of the Gr/Cu interface, the anti-irradiation mechanism also lies in the impenetrable character of Gr. The present findings may open a new path to develop Gr/metal composites for future advanced nuclear materials. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |