About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Radiation Effects in Metals and Ceramics
|
Presentation Title |
Irradiation Enhanced Alpha Prime Precipitation in 2nd Gen. FeCrAl Alloys After Neutron Irradiation to 7 dpa |
Author(s) |
Caleb Massey, Kevin Field, Philip Edmondson, Steven Zinkle |
On-Site Speaker (Planned) |
Caleb Massey |
Abstract Scope |
In the search for advanced materials that can help increase coping time or reduce the severity of nuclear accident scenarios, FeCrAl alloys have shown promise as a potential drop-in replacement for existing Zr-based cladding. However, the radiation tolerance of 2nd Generation Fe-(10-16Cr)-(5-7Al)-2Mo (wt.%) has yet to be investigated to higher doses of neutron irradiation. Recently irradiated FeCrAl alloys in the composition range above have been irradiated in the High Flux Isotope Reactor to 7 displacements per atom (dpa) at 330C. The post-irradiation precipitation state of these alloys have been evaluated using the atom probe tomography technique. Since the precipitation of the Cr-rich alpha prime phase is a key factor in the irradiation hardening of the FeCrAl alloy system in this dose/temperature regime, the dispersion and composition characteristics of this Cr-rich phase is evaluated as a function of alloy composition and irradiation dose. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |