NSUF 16-622: Characterize Neutron Irradiated HT-UPS Stainless Steel Using Transmission Electron Microscopy and Atom Probe Tomography
To fully understand how the high-temperature ultrafine-precipitate-strengthened (HT-UPS) austenitic stainless steel responds to a sodium cooled fast reactor (SFR) relevant irradiation condition, it is proposed to utilize the transmission electron microscopy (TEM) and atom probe tomography (APT) at MaCS/CAES to quantitatively analyze the neutron irradiation induced defects such as dislocation loops, voids, radiation-induced precipitates and the RIS. TEM disk samples (as-received, 3dpa/500°C and 3dpa/500°C + ann. at 600°C) are available to this project. Complemented by the far-field high-energy X-ray diffraction microscopy (FF-HEDM) measurement at APS/ANL, the anticipated outcome from this project will provide a fundamental understanding of the irradiation effects on this material’s microstructure and microchemistry at multi-scale (nano to meso). The results will further help to understand the mechanical responses of neutron microstructure to an in-situ high energy X-ray tensile test. The project is fully aligned with the DOE-NE’s missions via supporting the advanced reactor concepts (ARC), advanced small modular reactors (aSMR), and nuclear energy advanced modeling and simulations (NEAMS) programs. The proposed period of experiment is FIB for 2 days, Tecnai TEM for 2 days, and LEAP for 4 days.The research will be completed within six months after the proposal is approved and granted instrument time.
추가 정보
| 필드 | 값 |
|---|---|
| Abstract | To fully understand how the high-temperature ultrafine-precipitate-strengthened (HT-UPS) austenitic stainless steel responds to a sodium cooled fast reactor (SFR) relevant irradiation condition, it is proposed to utilize the transmission electron microscopy (TEM) and atom probe tomography (APT) at MaCS/CAES to quantitatively analyze the neutron irradiation induced defects such as dislocation loops, voids, radiation-induced precipitates and the RIS. TEM disk samples (as-received, 3dpa/500°C and 3dpa/500°C + ann. at 600°C) are available to this project. Complemented by the far-field high-energy X-ray diffraction microscopy (FF-HEDM) measurement at APS/ANL, the anticipated outcome from this project will provide a fundamental understanding of the irradiation effects on this material’s microstructure and microchemistry at multi-scale (nano to meso). The results will further help to understand the mechanical responses of neutron microstructure to an in-situ high energy X-ray tensile test. The project is fully aligned with the DOE-NE’s missions via supporting the advanced reactor concepts (ARC), advanced small modular reactors (aSMR), and nuclear energy advanced modeling and simulations (NEAMS) programs. The proposed period of experiment is FIB for 2 days, Tecnai TEM for 2 days, and LEAP for 4 days.The research will be completed within six months after the proposal is approved and granted instrument time. |
| Award Announced Date | 2015-12-16T00:00:00 |
| Awarded Institution | None |
| Facility | None |
| Facility Tech Lead | Yaqiao Wu |
| Irradiation Facility | None |
| PI | Chi Xu |
| PI Email | [email protected] |
| Project Type | RTE |
| RTE Number | 622 |