Abstract
New candidate materials for GenIV or fusion nuclear energy systems, e.g., nanostructured ferritic alloys, are distinguished from older-generation nuclear materials by much smaller feature sizes and complex local nanochemistry and crystallography. Established and perspective nuclear materials, e.g. reactor pressure vessel steels or plasma-facing tungsten, also form small nanoscale structures under in-reactor service. Here, we discuss recent advances in materials characterization – high-efficiency X-ray mapping combined with datamining; transmission Kikuchi diffraction; and atom probe tomography – that make it possible to quantitatively characterize these nanoscale structures in unprecedented detail, which enables advances in understanding and modelling of radiation service and degradation.
| Original language | English |
|---|---|
| Pages (from-to) | 169-175 |
| Number of pages | 7 |
| Journal | Scripta Materialia |
| Volume | 143 |
| DOIs | |
| State | Published - Jan 15 2018 |
Funding
CMP and KW supported by an Early Career Award, US Department of Energy, Office of Science, Fusion Energy Sciences. PDE supported by Department of Energy, Office of Nuclear Energy, Fuel Cycle R&D Program, and the Light Water Reactor Sustainability Program. We thank Dr. D. T. Hoelzer, ORNL, for the 14YWT specimens and Dr. Z. Feng, ORNL, for the welding. Work on 14YWT was supported by US Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Technology Division. Tungsten specimens part of the ORNL-University of Tennessee Office of Fusion Energy Sciences collaboration. FEI Talos F200X S/TEM provided by the Department of Energy, Office of Nuclear Energy, Fuel Cycle R&D Program and the Nuclear Science User Facilities. Part of this work ( Fig. 1 d, Fig. 5 ) supported by the U.S. Department of Energy , Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-051D14517 as part of a Nuclear Science User Facilities Experiment. Appendix A CMP and KW supported by an Early Career Award, US Department of Energy, Office of Science, Fusion Energy Sciences. PDE supported by Department of Energy, Office of Nuclear Energy, Fuel Cycle R&D Program, and the Light Water Reactor Sustainability Program. We thank Dr. D. T. Hoelzer, ORNL, for the 14YWT specimens and Dr. Z. Feng, ORNL, for the welding. Work on 14YWT was supported by US Department of Energy, Office of Science, Basic Energy Sciences, Materials Science and Technology Division. Tungsten specimens part of the ORNL-University of Tennessee Office of Fusion Energy Sciences collaboration. FEI Talos F200X S/TEM provided by the Department of Energy, Office of Nuclear Energy, Fuel Cycle R&D Program and the Nuclear Science User Facilities. Part of this work (Fig. 1d, Fig. 5) supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-051D14517 as part of a Nuclear Science User Facilities Experiment.
| Funders | Funder number |
|---|---|
| DOE Idaho Operations Office | DE-AC07-051D14517 |
| Light Water Reactor Sustainability Program | |
| Nuclear Science User Facilities | |
| Nuclear Science User Facilities Experiment | |
| ORNL-University of Tennessee | |
| Office of Fusion Energy Sciences collaboration | |
| US Department of Energy | |
| U.S. Department of Energy | |
| Pennsylvania Department of Education | |
| Office of Science | |
| Office of Nuclear Energy | |
| Basic Energy Sciences | |
| Fusion Energy Sciences | |
| Oak Ridge National Laboratory | |
| Chugoku Marine Paints |
Keywords
- Atom probe
- Multivariate statistical analysis
- Radiation damage
- Scanning transmission electron microscopy
- Transmission Kikuchi diffraction