NSUF 16-655: Evaluate the ferrite decomposition in irradiated duplex cast stainless steels
The work is aimed to complete the study on cast stainless steels irradiated to 5, 10, 20 and 40 dpa at 320°C in the Bor-60 reactor. Previous study of 20 and 40 dpa irradiated samples shows that microstructures of irradiated ferrite phase mainly consist of spinodal decomposition and G-phase precipitates, however, it is not concluded whether evolutions of spinodal decomposition or G-phase precipitates already saturated at 20 dpa or at a much lower dose since the difference of irradiated microstructure in between 20 and 40 dpa samples is very minimal. Therefore it is desired to characterize the samples irradiated to lower doses of 5 and 10 dpa. Both the transmission electron microscope and atom probe tomography will be used to study the irradiated induced nano-sized features including dislocation, phase separation and precipitates. The output from the execution of proposed study will complete the construction of the response of ferrite in duplex stainless steels to a wide range of neutron irradiation dose. By correlating the microstructure study with the selected mechanical tests, this proposed research will provide a fundamental understanding on the response of duplex cast stainless steel ( or welds) during the designed 40 years reactor life, and more relevantly, during the extended life of 60 years and beyond.
Papildoma informacija
| Laukas | Reikšmė |
|---|---|
| Awarded Institution | University of Florida |
| Embargo End Date | 2026-02-27 |
| Facility Tech Lead | Mukesh Bachhav |
| NSUF Call | FY 2016 RTE 2nd Call |
| PI | Yong Yang |
| Project Member | Yong Yang, Associate Professor - University of Florida (https://orcid.org/0000-0002-0247-6219) |
| Project Member | Zhangbo Li - University of Florida (https://orcid.org/0000-0002-3992-1048) |
| Project Member | Yiren Chen - Argonne National Laboratory (https://orcid.org/0000-0002-4153-1532) |
| Project Type | RTE |
| Publication | Irradiaiton Response of the Ferrite Phase in CF3 Cast Stainless Steel Zhangbo Li, Yong Yang Transactions of the American Nuclear Society 116 2017-06-01 http://epubs.ans.org/?a=40626 |
| Publication | Lattice expansion by intrinsic defects in uranium by molecular dynamics simulation Rory Kennedy, Yangzhong Li Journal of Nuclear Materials 475 2016-03-20 http://www.sciencedirect.com/science/article/pii/S0022311516300915 |
| RTE Number | 655 |