| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
H-26: Defect Clustering in Irradiated Alpha Uranium: Cluster Dynamics Modeling and Ion Irradiation Experiments |
| Author(s) |
Fabia Farlin Athena, Sanjoy Majumder, Tiankai Yao, Lingfeng He, Anter El-Azab |
| On-Site Speaker (Planned) |
Anter El-Azab |
| Abstract Scope |
We present a cluster dynamics model for loop formation in alpha uranium. The defect clusters considered at prismatic loops of interstitial and vacancy type on (010) and (100) planes, respectively. The model parameters were partly taken from open literature and partly fixed by molecular dynamics simulations. Cluster dynamics simulations were carried out at different temperatures and dose rates, and the comparison with the existing neutron irradiation data for the loop size distribution and average loop size and density shows that the model is able to make reasonable predictions. We also present the results of proton irradiation of alpha uranium, where the proton beam was used to produce a microstructure dominated by dislocation loops. The formation and evolution of dislocation loops was studied by TEM technique, which provided further data for validation of the cluster dynamics model. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |