NSUF 17-1098: An in-situ TEM characterization of tensile testing of ion irradiated HT-UPS steel at RT and 400°C
The objective of this research is to develop an understanding of the deformation behavior of the irradiated HT-UPS steel through the use of in-situ ion irradiation and the in-situ straining capabilities of the IVEM tandem facility. Tensile specimens with dimensions compatible to the in-situ straining stage will be used. The electron transparent thin foil specimens will be prepared using the electropolish method. The specimens will be in-situ irradiated with inert gas ions (Kr++) to create irradiation damages. The damage yield will be quantified with the IVEM microscope. The ion irradiation will be carried out at 400°C, and to a low end dose of 0.5dpa, and a high end dose of 3dpa. The in-situ straining test will be performed at two temperatures: the room temperature (RT) and 400°C. The evolution of the deformation microstructures which features the interaction of deformation induced dislocations and irradiation induced defect clusters will be characterized and recorded in-situ. The acquired results will contribute towards an understanding of the deformation behavior of the irradiated HT-UPS steel, which is a candidate material for the next generation nuclear power plants. The results will also help the understanding of high energy X-ray characterization results of the tensile deformation of neutron irradiated (400°C/3dpa) HT-UPS steel carried out at the Advanced Photon Source (APS) facility, which was also performed at temperatures of RT and 400°C. Two un-irradiated specimens will also be in-situ tensile strained as a comparison to the irradiated specimen testing results, to reveal the radiation effects on the evolution of deformation microstructures. The total instrument time needed is estimated to be two weeks (workdays only).
Additional Info
| Field | Value |
|---|---|
| Abstract | The objective of this research is to develop an understanding of the deformation behavior of the irradiated HT-UPS steel through the use of in-situ ion irradiation and the in-situ straining capabilities of the IVEM tandem facility. Tensile specimens with dimensions compatible to the in-situ straining stage will be used. The electron transparent thin foil specimens will be prepared using the electropolish method. The specimens will be in-situ irradiated with inert gas ions (Kr++) to create irradiation damages. The damage yield will be quantified with the IVEM microscope. The ion irradiation will be carried out at 400°C, and to a low end dose of 0.5dpa, and a high end dose of 3dpa. The in-situ straining test will be performed at two temperatures: the room temperature (RT) and 400°C. The evolution of the deformation microstructures which features the interaction of deformation induced dislocations and irradiation induced defect clusters will be characterized and recorded in-situ. The acquired results will contribute towards an understanding of the deformation behavior of the irradiated HT-UPS steel, which is a candidate material for the next generation nuclear power plants. The results will also help the understanding of high energy X-ray characterization results of the tensile deformation of neutron irradiated (400°C/3dpa) HT-UPS steel carried out at the Advanced Photon Source (APS) facility, which was also performed at temperatures of RT and 400°C. Two un-irradiated specimens will also be in-situ tensile strained as a comparison to the irradiated specimen testing results, to reveal the radiation effects on the evolution of deformation microstructures. The total instrument time needed is estimated to be two weeks (workdays only). |
| Award Announced Date | 2017-09-20T12:33:01.07 |
| Awarded Institution | None |
| Facility | None |
| Facility Tech Lead | Wei-Ying Chen |
| Irradiation Facility | None |
| PI | Chi Xu |
| PI Email | [email protected] |
| Project Type | RTE |
| RTE Number | 1098 |