| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
Defects Generation during Irradiation-induced Alpha/Gamma Phase Transformation in Uranium Alloys |
| Author(s) |
Yipeng Gao, Benjamin Beeler, Yongfeng Zhang |
| On-Site Speaker (Planned) |
Yipeng Gao |
| Abstract Scope |
The phase transformation between alpha and gamma in uranium alloys has been widely observed, driven by either temperature or irradiation. Because of the unique crystal symmetry of the alpha phase, diversified types of defects are generated during the phase transformation, which plays a critical role on the mechanical integrity of nuclear metal fuels. By utilizing advanced crystallographic and simulation tools, we analyze the symmetry breaking during the phase transformation and its relation with transformation-induced defects. A new defect generation mechanism is demonstrated and the characteristic types of transformation-induced defects are systematically predicted, through a combined theoretical and experimental study. Our approach can be directly generalized to analyze crystalline systems and phase transformations with similar symmetry, e.g., in titanium alloys and zirconium alloys, which provides a new insight to understand the intrinsic coupling between crystalline defects and irradiation-induced phase transformations. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |