Back to Search
Start Over
Post irradiation examination of nanoprecipitate stability and α′ precipitation in an oxide dispersion strengthened Fe-12Cr-5Al alloy.
- Source :
-
Scripta Materialia . Mar2019, Vol. 162, p94-98. 5p. - Publication Year :
- 2019
-
Abstract
- Abstract Oxide dispersion strengthened (ODS) FeCrAl alloy (Fe-12Cr-5Al wt%) was neutron irradiated to 1.8 displacements per atom (dpa) at 215, 357, and 557 °C to investigate (Y,Al,O) nano-oxide stability and Cr-rich α ′ precipitate formation using atom probe tomography. The nano-oxide sizes remain unchanged after irradiation, but the compositions are dependent on irradiation temperature due to competition between ballistic dissolution and precipitate reformation. Cr-rich clusters observed after 357 °C irradiation have lower Cr contents (61 at.%) than equilibrium α ′, with a lower number density than wrought FeCrAl alloys. This suggests a suppression of α ′ precipitation due to the high sink strength of ODS FeCrAl. Graphical abstract Unlabelled Image [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13596462
- Volume :
- 162
- Database :
- Academic Search Index
- Journal :
- Scripta Materialia
- Publication Type :
- Academic Journal
- Accession number :
- 134148337
- Full Text :
- https://doi.org/10.1016/j.scriptamat.2018.10.047