TY - JOUR
T1 - Solid-state phase transitions of two quaternary metallic fuel alloys (U-2.5Mo-2.5Ti-5.0Zr and U-1.5Mo-1.5Ti-7.0Zr in wt. %)
AU - Zhuo, Weiqian
AU - Wu, Huali
AU - Xie, Yi
AU - Benson, Michael T.
AU - Zhang, Jinsuo
N1 - Funding Information:
This work was supported through INL's Laboratory Directed Research & Development 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 B.V.
PY - 2021/11
Y1 - 2021/11
N2 - This study focuses on the solid-state phase transitions of two quaternary fuel alloys for fast reactors: U-1.5Mo-1.5Ti-7.0Zr (U-MT7Z) and U-2.5Mo-2.5Ti-5.0Zr (U-MT5Z). The characterization techniques are differential scanning calorimetry (DSC), X-ray powder diffraction (XRD), and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). To identify the high temperature phases, the alloys were annealed at 873K, 948K, 1023K, and 1123K (all under 72 hours). Combining those characterizations, the phase transitions are determined. In U-MT7Z, there is one phase transition observed, and it is ascribed to α + U2Ti → γ transition. In U-MT5Z, two transitions are found. The first transition is α → γ, while the second is U2Ti → γ. The γ phase onset temperature of U-MT5Z is lower than that of U-MT7Z due to the higher Mo content.
AB - This study focuses on the solid-state phase transitions of two quaternary fuel alloys for fast reactors: U-1.5Mo-1.5Ti-7.0Zr (U-MT7Z) and U-2.5Mo-2.5Ti-5.0Zr (U-MT5Z). The characterization techniques are differential scanning calorimetry (DSC), X-ray powder diffraction (XRD), and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). To identify the high temperature phases, the alloys were annealed at 873K, 948K, 1023K, and 1123K (all under 72 hours). Combining those characterizations, the phase transitions are determined. In U-MT7Z, there is one phase transition observed, and it is ascribed to α + U2Ti → γ transition. In U-MT5Z, two transitions are found. The first transition is α → γ, while the second is U2Ti → γ. The γ phase onset temperature of U-MT5Z is lower than that of U-MT7Z due to the higher Mo content.
KW - DSC
KW - Phase transition
KW - Quaternary uranium alloy
KW - SEM/EDS
KW - XRD
UR - https://www.scopus.com/pages/publications/85108860159
UR - https://www.mendeley.com/catalogue/3803c229-498e-3f16-b5c4-6ac5d9bfcab4/
U2 - 10.1016/j.jnucmat.2021.153134
DO - 10.1016/j.jnucmat.2021.153134
M3 - Article
AN - SCOPUS:85108860159
SN - 0022-3115
VL - 555
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
M1 - 153134
ER -