U.S. Department of EnergyOffice of Scientific and Technical Information
Atom probe datasets from neutron irradiated Fe-Cr alloys
Abstract
A series of model Fe–Cr alloys containing 3–18 at.% Cr was neutron irradiated at a nominal temperature of 563 K to 1.82 dpa. Solute distributions were analyzed by atom probe tomography, which revealed α′ precipitation for alloys containing more than 9 at.% Cr. Both the Cr concentration dependence of α′ precipitation and the measured matrix compositions are in agreement with the recently published Fe–Cr phase diagrams. An irradiation-accelerated precipitation process is strongly suggested. Irradiation was carried out in the Advance Test Reactor (ATR) at Idaho National Laboratory. A series of six Fe–Cr alloys of nominal compositions 3, 6, 9, 12, 15 and 18 at.% Cr was irradiated at a neutron fluence (E > 1 MeV) of 1.1 × 1021 n cm−2 at 563 ± 15 K and to a damage level of 1.82 displacements per atom (dpa). Nominal neutron flux and dpa rate are 2.3 × 1014 n cm−2 s−1 and 3.4 × 10−7 dpa s−1, respectively. The microstructures of the Fe–Cr alloys were studied by atom probe tomography (APT) using a Cameca 4000X HR instrument. APT specimens were prepared by a standard lift-out process using a Quanta 3D 200i dual beam scanning electron microscope ensuring that the analyses weremore »
- Authors:
-
;
;
- Idaho National Laboratory (INL), Idaho Falls, ID (United States); Idaho National Laboratory
- University of Michigan, Ann Arbor
- UC Santa Barbara College of Engineering
- Publication Date:
- Other Number(s):
- atom_probe_datasets_from_neutron_irradiated_fe-cr_alloys
- DOE Contract Number:
- AC07-05ID14517
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 2467501
- DOI:
- https://doi.org/10.48806/2467501
Citation Formats
Bachhav, Mukesh, Marquis, Emmanuelle, and Odette, George Robert. Atom probe datasets from neutron irradiated Fe-Cr alloys. United States: N. p., 2014.
Web. doi:10.48806/2467501.
Bachhav, Mukesh, Marquis, Emmanuelle, & Odette, George Robert. Atom probe datasets from neutron irradiated Fe-Cr alloys. United States. doi:https://doi.org/10.48806/2467501
Bachhav, Mukesh, Marquis, Emmanuelle, and Odette, George Robert. 2014.
"Atom probe datasets from neutron irradiated Fe-Cr alloys". United States. doi:https://doi.org/10.48806/2467501. https://www.osti.gov/servlets/purl/2467501. Pub date:Fri Feb 28 23:00:00 EST 2014
@article{osti_2467501,
title = {Atom probe datasets from neutron irradiated Fe-Cr alloys},
author = {Bachhav, Mukesh and Marquis, Emmanuelle and Odette, George Robert},
abstractNote = {A series of model Fe–Cr alloys containing 3–18 at.% Cr was neutron irradiated at a nominal temperature of 563 K to 1.82 dpa. Solute distributions were analyzed by atom probe tomography, which revealed α′ precipitation for alloys containing more than 9 at.% Cr. Both the Cr concentration dependence of α′ precipitation and the measured matrix compositions are in agreement with the recently published Fe–Cr phase diagrams. An irradiation-accelerated precipitation process is strongly suggested. Irradiation was carried out in the Advance Test Reactor (ATR) at Idaho National Laboratory. A series of six Fe–Cr alloys of nominal compositions 3, 6, 9, 12, 15 and 18 at.% Cr was irradiated at a neutron fluence (E > 1 MeV) of 1.1 × 1021 n cm−2 at 563 ± 15 K and to a damage level of 1.82 displacements per atom (dpa). Nominal neutron flux and dpa rate are 2.3 × 1014 n cm−2 s−1 and 3.4 × 10−7 dpa s−1, respectively. The microstructures of the Fe–Cr alloys were studied by atom probe tomography (APT) using a Cameca 4000X HR instrument. APT specimens were prepared by a standard lift-out process using a Quanta 3D 200i dual beam scanning electron microscope ensuring that the analyses were performed away from grain boundaries.},
doi = {10.48806/2467501},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Feb 28 23:00:00 EST 2014},
month = {Fri Feb 28 23:00:00 EST 2014}
}