TY - JOUR
T1 - An investigation of the phase behaviors for quaternary U-Nb/Mo-Ti-Zr metallic fuel alloys
AU - Zhuo, Weiqian
AU - Wu, Huali
AU - Benson, Michael T.
AU - Zhang, Jinsuo
N1 - Funding Information:
This work was supported through the INL Laboratory Directed Research & Development (LDRD) Program under DOE Idaho Operations Office Contract DE-AC07–05ID14517 . Accordingly, the U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript or allow others to do so, for U.S. Government purposes. The advice and help by Nanoscale Characterization and Fabrication Laboratory at Virginia Tech are also highly appreciated.
Funding Information:
This work was supported through the INL Laboratory Directed Research & Development (LDRD) Program under DOE Idaho Operations Office Contract DE-AC07–05ID14517. Accordingly, the U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript or allow others to do so, for U.S. Government purposes. The advice and help by Nanoscale Characterization and Fabrication Laboratory at Virginia Tech are also highly appreciated.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2022/3
Y1 - 2022/3
N2 - Quaternary fuel alloys containing U, Nb/Mo, Ti, and Zr are proposed as fuel candidates for sodium-cooled fast reactors (SFRs). In this work, two Nb-bearing alloys, i.e., U-NT5Z (U‐2.5Nb‐2.5Ti‐5.0Zr in wt%) and U-NT7Z (U‐1.5Nb‐1.5Ti‐7.0Zr in wt%), and two Mo-bearing alloys, i.e., U-MT5Z (U-2.5Mo-2.5Ti-5.0Zr in wt%) and U-MT7Z (U-1.5Mo-1.5Ti-7.0Zr in wt%) were characterized and compared. The characterization techniques were differential scanning calorimetry (DSC), X-ray powder diffraction (XRD), and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). DSC was performed to obtain the transition behaviors, and XRD and SEM/EDS were applied for phase identification. The results were combined to obtain the solid-state phase transitions between 500 °C and 850 °C for the alloys. It is found that the Nb-bearing alloys comprise similar phase transition behaviors as the Mo-bearing alloys. The phase transitions in U-NT5Z are α → γ at 608 °C and U2Ti → γ at 627 °C, which are ~40 °C higher than that of U-MT5Z. The phase transition in U-NT7Z is α → γ at 645 °C, and is 23 °C higher than that of U-MT7Z.
AB - Quaternary fuel alloys containing U, Nb/Mo, Ti, and Zr are proposed as fuel candidates for sodium-cooled fast reactors (SFRs). In this work, two Nb-bearing alloys, i.e., U-NT5Z (U‐2.5Nb‐2.5Ti‐5.0Zr in wt%) and U-NT7Z (U‐1.5Nb‐1.5Ti‐7.0Zr in wt%), and two Mo-bearing alloys, i.e., U-MT5Z (U-2.5Mo-2.5Ti-5.0Zr in wt%) and U-MT7Z (U-1.5Mo-1.5Ti-7.0Zr in wt%) were characterized and compared. The characterization techniques were differential scanning calorimetry (DSC), X-ray powder diffraction (XRD), and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). DSC was performed to obtain the transition behaviors, and XRD and SEM/EDS were applied for phase identification. The results were combined to obtain the solid-state phase transitions between 500 °C and 850 °C for the alloys. It is found that the Nb-bearing alloys comprise similar phase transition behaviors as the Mo-bearing alloys. The phase transitions in U-NT5Z are α → γ at 608 °C and U2Ti → γ at 627 °C, which are ~40 °C higher than that of U-MT5Z. The phase transition in U-NT7Z is α → γ at 645 °C, and is 23 °C higher than that of U-MT7Z.
KW - DSC
KW - Quaternary fuel alloys
KW - SEM/EDS
KW - Sodium-cooled fast reactors
KW - XRD
UR - https://www.scopus.com/pages/publications/85120492361
UR - https://www.mendeley.com/catalogue/d5273cb7-5d1e-3d2d-8131-00e7beb668c7/
U2 - 10.1016/j.mtcomm.2021.103042
DO - 10.1016/j.mtcomm.2021.103042
M3 - Article
AN - SCOPUS:85120492361
SN - 2352-4928
VL - 30
JO - Materials Today Communications
JF - Materials Today Communications
M1 - 103042
ER -