About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
Ion-irradiation-induced Property Change in FeCr: Hardness, Thermal Diffusivity and Lattice Strain |
Author(s) |
Kay Song, Suchandrima Das, Abdallah Reza, Nicholas Phillips, Ruqing Xu, Hongbing Yu, Kenichiro Mizohata, David Armstrong, Felix Hofmann |
On-Site Speaker (Planned) |
Kay Song |
Abstract Scope |
The study of FeCr binary alloys provides fundamental insights into irradiation damage and defect behaviour without the microstructural complexities of steels for fusion materials. We present a systematic study of Fe3Cr, Fe5Cr and Fe10Cr alloys implanted to 0.01 dpa and 0.1 dpa. Our results from nanoindentation and X-ray diffraction suggest that Cr leads to an increased retention of irradiation-induced defects, causing substantial changes in hardness and lattice strain. The degradation of thermal diffusivity, measured by transient grating spectroscopy, was found to be dominated by the presence of Cr while the effect of the defect population is small. We find significant lattice strains which cannot be fully account for by the visible defects observed in TEM, suggesting that TEM may not fully capture the irradiation-induced defect population. The comparison of trends across different material properties reveals unique insights into the behaviour of defects and their effect on the FeCr material system. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Nuclear Materials, Iron and Steel |