Phase transformation kinetics in rolled U-10 wt. % Mo foil: Effect of post-rolling heat treatment and prior γ-UMo grain size
Abstract
Here, the effect of sub-eutectoid heat treatment on the phase transformation behavior in rolled U-10 wt.% Mo (U10Mo) foils was systematically investigated. The as-cast 5 mm thick foils were initially homogenized at 900 °C for 48 h and were hot rolled to 2 mm and later cold rolled down to 0.2 mm. Three starting microstructures were evaluated: (i) hot + cold-rolled to 0.2 mm (as-rolled condition), (ii) hot + cold-rolled to 0.2 mm + annealed at 700 °C for 1 h, and (iii) hot + cold-rolled to 0.2 mm + annealed at 1000 °C for 60 h. Annealing of as-rolled materials at 700 °C resulted in small grain size (15 ± 9 μm average grain size), while annealing at 1000 °C led to very large grains (156 ± 118 μm average grain size) in rolled U10Mo foils. Later the samples were subjected to sub-eutectoid heat-treatment temperatures of 550 °C, 500 °C, and 400 °C for different durations of time starting from 1 h up to 100 h. U10Mo rolled foils went through various degrees of decomposition when subjected to the sub-eutectoid heat-treatment step and formed a lamellar microstructure through a cellular reaction mostly along the previous γ-UMo grain boundaries. Themore »
- Authors:
-
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1395354
- Alternate Identifier(s):
- OSTI ID: 1549206
- Report Number(s):
- PNNL-SA-127108
Journal ID: ISSN 0022-3115; PII: S0022311517309170
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Nuclear Materials
- Additional Journal Information:
- Journal Volume: 496; Journal Issue: C; Journal ID: ISSN 0022-3115
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
Citation Formats
Jana, Saumyadeep, Overman, Nicole, Varga, Tamas, Lavender, Curt, and Joshi, Vineet V. Phase transformation kinetics in rolled U-10 wt. % Mo foil: Effect of post-rolling heat treatment and prior γ-UMo grain size. United States: N. p., 2017.
Web. doi:10.1016/J.JNUCMAT.2017.09.030.
Jana, Saumyadeep, Overman, Nicole, Varga, Tamas, Lavender, Curt, & Joshi, Vineet V. Phase transformation kinetics in rolled U-10 wt. % Mo foil: Effect of post-rolling heat treatment and prior γ-UMo grain size. United States. https://doi.org/10.1016/J.JNUCMAT.2017.09.030
Jana, Saumyadeep, Overman, Nicole, Varga, Tamas, Lavender, Curt, and Joshi, Vineet V. Mon .
"Phase transformation kinetics in rolled U-10 wt. % Mo foil: Effect of post-rolling heat treatment and prior γ-UMo grain size". United States. https://doi.org/10.1016/J.JNUCMAT.2017.09.030. https://www.osti.gov/servlets/purl/1395354.
@article{osti_1395354,
title = {Phase transformation kinetics in rolled U-10 wt. % Mo foil: Effect of post-rolling heat treatment and prior γ-UMo grain size},
author = {Jana, Saumyadeep and Overman, Nicole and Varga, Tamas and Lavender, Curt and Joshi, Vineet V.},
abstractNote = {Here, the effect of sub-eutectoid heat treatment on the phase transformation behavior in rolled U-10 wt.% Mo (U10Mo) foils was systematically investigated. The as-cast 5 mm thick foils were initially homogenized at 900 °C for 48 h and were hot rolled to 2 mm and later cold rolled down to 0.2 mm. Three starting microstructures were evaluated: (i) hot + cold-rolled to 0.2 mm (as-rolled condition), (ii) hot + cold-rolled to 0.2 mm + annealed at 700 °C for 1 h, and (iii) hot + cold-rolled to 0.2 mm + annealed at 1000 °C for 60 h. Annealing of as-rolled materials at 700 °C resulted in small grain size (15 ± 9 μm average grain size), while annealing at 1000 °C led to very large grains (156 ± 118 μm average grain size) in rolled U10Mo foils. Later the samples were subjected to sub-eutectoid heat-treatment temperatures of 550 °C, 500 °C, and 400 °C for different durations of time starting from 1 h up to 100 h. U10Mo rolled foils went through various degrees of decomposition when subjected to the sub-eutectoid heat-treatment step and formed a lamellar microstructure through a cellular reaction mostly along the previous γ-UMo grain boundaries. The least amount of cellular reaction was observed in the large-grain microstructure at all temperatures. Conversely, a substantial amount of cellular reaction was observed in both the as-rolled and the small-grain microstructure. After 100 h of heat treatment at 500 °C, the volume fraction of the lamellar phase was found to be 4%, 22%, and 82% in large-grain, as-rolled, and small-grain samples, respectively.},
doi = {10.1016/J.JNUCMAT.2017.09.030},
journal = {Journal of Nuclear Materials},
number = C,
volume = 496,
place = {United States},
year = {Mon Sep 25 00:00:00 EDT 2017},
month = {Mon Sep 25 00:00:00 EDT 2017}
}
Web of Science
Works referenced in this record:
Development of very-high-density low-enriched-uranium fuels
journal, December 1997
- Snelgrove, J. L.; Hofman, G. L.; Meyer, M. K.
- Nuclear Engineering and Design, Vol. 178, Issue 1
Properties of DU–10wt% Mo alloys subjected to various post-rolling heat treatments
journal, June 2010
- Burkes, Douglas E.; Prabhakaran, Ramprashad; Hartmann, Thomas
- Nuclear Engineering and Design, Vol. 240, Issue 6
Phase transformation of metastable cubic γ-phase in U–Mo alloys
journal, September 2010
- Sinha, V. P.; Hegde, P. V.; Prasad, G. J.
- Journal of Alloys and Compounds, Vol. 506, Issue 1
IRRADIATION PERFORMANCE OF U-Mo MONOLITHIC FUEL
journal, April 2014
- Meyer, M. K.; Gan, J.; Jue, J. F.
- Nuclear Engineering and Technology, Vol. 46, Issue 2
Thermomechanical process optimization of U-10wt% Mo – Part 2: The effect of homogenization on the mechanical properties and microstructure
journal, October 2015
- Joshi, Vineet V.; Nyberg, Eric A.; Lavender, Curt A.
- Journal of Nuclear Materials, Vol. 465
Thermomechanical process optimization of U-10 wt% Mo – Part 1: high-temperature compressive properties and microstructure
journal, October 2015
- Joshi, Vineet V.; Nyberg, Eric A.; Lavender, Curt A.
- Journal of Nuclear Materials, Vol. 465
Fabrication of Monolithic RERTR Fuels by Hot Isostatic Pressing
journal, November 2010
- Jue, Jan-Fong; Park, Blair H.; Clark, Curtis R.
- Nuclear Technology, Vol. 172, Issue 2
Microstructural characteristics of HIP-bonded monolithic nuclear fuels with a diffusion barrier
journal, May 2014
- Jue, Jan-Fong; Keiser, Dennis D.; Breckenridge, Cynthia R.
- Journal of Nuclear Materials, Vol. 448, Issue 1-3
The uranium-molybdenum equilibrium diagram below 900° C
journal, March 1960
- Dwight, Austin E.
- Journal of Nuclear Materials, Vol. 2, Issue 1
Thermodynamic assessment of the U–Mo–Al system
journal, July 2010
- Zhang, X.; Cui, Y. F.; Xu, G. L.
- Journal of Nuclear Materials, Vol. 402, Issue 1
Calphad thermodynamic description of some binary systems involving U
journal, April 2011
- Berche, A.; Dupin, N.; Guéneau, C.
- Journal of Nuclear Materials, Vol. 411, Issue 1-3
Phase decomposition of γ-U (bcc) in U-10 wt% Mo fuel alloy during hot isostatic pressing of monolithic fuel plate
journal, November 2016
- Park, Y.; Eriksson, N.; Newell, R.
- Journal of Nuclear Materials, Vol. 480
Ageing characteristics of the metastable gamma phase in U–9 wt.% Mo alloy: experimental observations and thermodynamic validation
journal, September 2015
- Neogy, S.; Saify, M. T.; Jha, S. K.
- Philosophical Magazine, Vol. 95, Issue 26
Neutron and hard X-ray diffraction studies of the isothermal transformation kinetics in the research reactor fuel candidate U–8 wt%Mo
journal, May 2016
- Säubert, Steffen; Jungwirth, Rainer; Zweifel, Tobias
- Journal of Applied Crystallography, Vol. 49, Issue 3
α-Phase transformation kinetics of U – 8 wt% Mo established by in situ neutron diffraction
journal, August 2016
- Steiner, M. A.; Calhoun, C. A.; Klein, R. W.
- Journal of Nuclear Materials, Vol. 477
Microstructural study of gamma phase stability in U–9wt.% Mo alloy
journal, March 2012
- Neogy, S.; Saify, M. T.; Jha, S. K.
- Journal of Nuclear Materials, Vol. 422, Issue 1-3
Study of decomposition and reactions with aluminum matrix of dispersed atomized U-10 wt% Mo alloy
journal, December 2002
- Lee, Jeong-Soo; Lee, Chang-Hee; Kim, Ki Hwan
- Journal of Nuclear Materials, Vol. 306, Issue 2-3
Phase transitions during artificial ageing of segregated as-cast U–Mo alloys
journal, February 2015
- Pedrosa, Tércio Assunção; dos Santos, Ana Maria Matildes; Lameiras, Fernando Soares
- Journal of Nuclear Materials, Vol. 457
In situ TEM and synchrotron characterization of U–10Mo thin specimen annealed at the fast reactor temperature regime
journal, December 2015
- Yun, Di; Mo, Kun; Mohamed, Walid
- Materials Characterization, Vol. 110
Kinetics of cellular transformation and competing precipitation mechanisms during sub-eutectoid annealing of U10Mo alloys
journal, November 2017
- Jana, S.; Devaraj, A.; Kovarik, L.
- Journal of Alloys and Compounds, Vol. 723
Kinetics of discontinuous coarsening of cellular precipitate in a Cu-15 wt% in alloy
journal, July 1986
- Gupta, S. P.
- Acta Metallurgica, Vol. 34, Issue 7
Study of decomposition and stabilization of splat-cooled cubic γ-phase U–Mo alloys
journal, December 2013
- Kim-Ngan, N. -T. H.; Tkach, I.; Mašková, S.
- Journal of Alloys and Compounds, Vol. 580
Nomenclature proposee pour les phases des alliages d'uranium
journal, September 1960
- Lehmann, Mme J.; Hills, R. F.
- Journal of Nuclear Materials, Vol. 2, Issue 3
Characterization of cubic γ-phase uranium molybdenum alloys synthesized by ultrafast cooling
journal, September 2012
- Tkach, I.; Kim-Ngan, N. -T. H.; Mašková, S.
- Journal of Alloys and Compounds, Vol. 534
A study of the shear transformations from the gamma-phase in uranium-molybdenum alloys containing 6.0–12.5 at % molybdenum
journal, June 1970
- Howlett, B. W.
- Journal of Nuclear Materials, Vol. 35, Issue 3
Microstructural characteristics of DU–xMo alloys with x=7–12wt%
journal, June 2009
- Burkes, Douglas E.; Hartmann, Thomas; Prabhakaran, Ramprashad
- Journal of Alloys and Compounds, Vol. 479, Issue 1-2
Neutron diffraction study of U–10 wt% Mo alloy
journal, February 2000
- Seong, Baek-Seok; Lee, Chang-Hee; Lee, Jeong-Soo
- Journal of Nuclear Materials, Vol. 277, Issue 2-3
Works referencing / citing this record:
Preparation of γ-Uranium-Molybdenum Alloys by Electrochemical Reduction of Solid Oxides in LiCl Molten Salt
journal, January 2019
- Zhong, Yu-Ke; Liu, Kui; Liu, Ya-Lan
- Journal of The Electrochemical Society, Vol. 166, Issue 8
Discontinuous Precipitation in U-10 wt.%Mo Alloy: Reaction Kinetics, Effect of Prior γ-UMo Microstructure, the Role of Grain-Boundary Misorientation, and the Effect of Ternary Alloying Addition
journal, June 2019
- Jana, Saumyadeep; Overman, Nicole; Devaraj, Arun
- JOM, Vol. 71, Issue 8
Texture Evolution in U-10Mo Nuclear Fuel Foils during Plasma Spray Coating with Zr
journal, May 2018
- Takajo, Shigehiro; Hollis, Kendall; Cummins, Dustin
- Quantum Beam Science, Vol. 2, Issue 2