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Phase Transformations and Microstructural Development in the U-10 Wt Pct Mo Alloy with Varying Zr Contents After Heat Treatments Relevant to the Monolithic Fuel Plate Fabrication Process

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Abstract

Decomposition of metastable, isotropic, body-centered cubic γ-phase in the U-10 wt pct Mo alloys with varying Zr contents was investigated as function of heat treatment parameters (i.e., temperature and time) relevant to the fabrication of monolithic fuel plate in development for research and test reactors. Phase constituents and microstructural characterization was performed using X-ray diffraction via Rietveld refinement, scanning electron microscopy with quantitative image analysis, and analytical transmission electron microscopy. Results were compared with the amount of equilibrium phases calculated using the lever rule from the available ternary phase diagrams. After sequential three-step heat treatment (900 °C for 168 hours, 650 °C for 3 hours, and 560 °C for 1.5 hours) decomposition of γ-phase was observed in alloys containing 2 wt pct or higher Zr. Decomposition of γ-phase occurred by the depletion of Mo in γ-phase due to the formation of Mo2Zr. Formation of Mo2Zr at 900 °C and 650 °C produced γ-phase with low-Mo content which in turn promoted a faster onset of eutectoid decomposition at 560 °C. The U-10Mo-4Zr and U-10Mo-10Zr alloys had the highest amount of Mo2Zr, and exhibited the largest amount of γ-phase decomposition after the heat treatment at 560 °C. Cooling rate from the heat treatment at 560 °C did not influence the phase constituents of the U-10Mo-xZr alloys, but the slower cooling promoted the better-defined lamellae microstructure associated with eutectoid decomposition. Trace amount of δ-phase was also observed in the microstructure after the heat treatment at 560 °C, presumably due to local inhomogeneity in alloy compositions.

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References

  1. D.D. Keiser, S.L. Hayes, M.K. Meyer, C.R. Clark, JOM, 2003, vol. 55, pp. 55-58.

    Article  CAS  Google Scholar 

  2. J.L. Snelgrove, G.L. Hofman, M.K. Meyer, C.L. Trybus, T.C. Wiencek, Nuclear Engineering and Design, 1997, vol. 178, pp. 119-126.

    Article  CAS  Google Scholar 

  3. A.L. S. van den Berghe, E. Koonen, L. Sannen, Advances in Science and Technology, 2010, vol. 73, pp. 78-90.

    Article  Google Scholar 

  4. E. Wilson, A. Bergeron, J. Stillman, T. Heltemes, D. Jaluvka, L. Jamison, European Nuclear Society: European Research Reactor Conference, Rotterdam, Netherlands, 14-18 May 2017, RRFM 2017-A0110.

  5. R. Newell, A. Mehta, Y.J. Park, D.D. Keiser Jr, Y.H. Sohn, Defect and Diffusion Forum, 2018, vol. 383, pp. 10-16.

    Article  Google Scholar 

  6. R. Newell, A. Mehta, Y.J. Park, Y.H. Sohn, J.F. Jue, D.D. Keiser Jr, Defect and Diffusion Forum, 2017, vol. 375, pp. 18-28.

    Article  Google Scholar 

  7. R.M. Hengstler, L. Beck, H. Breitkreutz, C. Jarousse, R. Jungwirth, W. Petry, W. Schmid, J. Schneider, N. Wieschalla, Journal of Nuclear Materials, 2010, vol. 402, pp. 74-80.

    Article  CAS  Google Scholar 

  8. A. Mehta, L. Zhou, E.A. Schulz, D.D. Keiser, J.I. Cole, Y. Sohn, Journal of Phase Equilibria and Diffusion, 2018, vol. 39, pp. 246-254.

    Article  CAS  Google Scholar 

  9. J.-F. Jue, B.H. Park, C.R. Clark, G.A. Moore, D.D. Keiser Jr, Nuclear technology, 2010, vol. 172, pp. 204-210.

    Article  CAS  Google Scholar 

  10. G.A. Moore, M.C. Marshall, Idaho National Laboratory, 2010, INL/EXT-10-17774, pp 1-17.

  11. R. Newell, Y. Park, A. Mehta, D. Keiser, Y. Sohn, Journal of Nuclear Materials, 2017, vol. 487, pp. 443-452.

    Article  CAS  Google Scholar 

  12. J.-F. Jue, T.L. Trowbridge, C.R. Breckenridge, G.A. Moore, M.K. Meyer, D.D. Keiser, Journal of Nuclear Materials, 2015, vol. 460, pp. 153-159.

    Article  CAS  Google Scholar 

  13. Y. Park, D. Keiser, Y. Sohn, Journal of Nuclear Materials, 2015, vol. 456, pp. 351-358.

    Article  CAS  Google Scholar 

  14. E. Perez, B. Yao, D. Keiser, Y. Sohn, Journal of Nuclear Materials, 2010, vol. 402, pp. 8-14.

    Article  CAS  Google Scholar 

  15. J.-F. Jue, D.D. Keiser, C.R. Breckenridge, G.A. Moore, M.K. Meyer, Journal of Nuclear Materials, 2014, vol. 448, pp. 250-258.

    Article  CAS  Google Scholar 

  16. Y. Park, J. Yoo, K. Huang, D. Keiser, J. Jue, B. Rabin, G. Moore, Y. Sohn, Journal of Nuclear Materials, 2014, vol. 447, pp. 215-224.

    Article  CAS  Google Scholar 

  17. Y. Park, N. Eriksson, D. Keiser, J. Jue, B. Rabin, G. Moore, Y. Sohn, Materials Characterization, 2015, vol. 103, pp. 50-57.

    Article  CAS  Google Scholar 

  18. S. Neogy, M. Saify, S. Jha, D. Srivastava, M. Hussain, G. Dey, R. Singh, Journal of Nuclear Materials, 2012, vol. 422, pp. 77-85.

    Article  CAS  Google Scholar 

  19. Y. Park, N. Eriksson, R. Newell, D. Keiser, Y. Sohn, Journal of Nuclear Materials, 2016, vol. 480, pp. 271-280.

    Article  CAS  Google Scholar 

  20. H. Okamoto, Journal of Phase Equilibria and Diffusion, 2012, vol. 33, p. 497.

    Article  CAS  Google Scholar 

  21. P. Repas, R. Goodenow, R. Hehemann, Trans. Am. Soc. Metals, 1964, vol. 57, pp. 150-163.

    CAS  Google Scholar 

  22. P. Repas, R. Goodenow, R. Hehemann, U.S. Army Materials Research Agency, Watertown, MA, USA, 1963, AMRA-CR-63-02/1(F).

  23. C.A.W. Peterson, W.J. Steele, S.L. DiGiallonardo, University of California – Ernest O. Lawrence Radiation Laboratory, Livermore, CA, USA (Available from Clearinghouse for Federal Scientific and Technical Information, National Bureau of Standards, U.S. Department of Commerce, Springfield, VA, USA), 1964, UCRL-7824, pp. 1–27.

  24. M. Meyer, G. Moore, J. Jue, D. Keiser, I. Glagolenko, D. Wachs, P. Murray, A. Robinson, F. Rice, H. Ozaltun, S. Miller, M. Okuniewski, B. Rabin, H. Glunz, N. Lybeck, Idaho National Laboratory, 2012 INL/EXT-12-26500, pp. 1–179.

  25. K.H. Kim, H.J. Kwon, J.M. Park, Y.S. Lee, C.K. Kim, Journal of the Korean Nuclear Society, 2001, vol. 33, pp. 365-374.

    CAS  Google Scholar 

  26. M. Meyer, J. Gan, J. Jue, D. Keiser, E. Perez, A. Robinson, D. Wachs, N. Woolstenhulme, G. Hofman, Y. Kim, Nuclear Engineering and Technology, 2014, vol. 46, pp. 169-182.

    Article  CAS  Google Scholar 

  27. R. Willard, A. Schmitt, Atomics International, California, 1964, NAA-SR-8956, pp. 1-33.

  28. A. Shoudy, W. McHugh, M. Silliman, Radiation Damage in Reactor Materials, 1963, vol. 46 pp. 133-162.

    Google Scholar 

  29. H.M. Rietveld, Journal of applied Crystallography, 1969, vol. 2, pp. 65-71.

    Article  CAS  Google Scholar 

  30. L. McCusker, R. Von Dreele, D. Cox, D. Louër, P. Scardi, Journal of Applied Crystallography, 1999, vol. 32, pp. 36-50.

    Article  CAS  Google Scholar 

  31. C. Suryanarayana, M.G. Norton, X-ray diffraction: a practical approach, Springer Science & Business Media, New York, 1998.

    Book  Google Scholar 

  32. O. Ivanov, G. Bagrov, Struct. Alloys Certain Syst. Cont. Uranium Thorium, 1963, pp. 131–53; (Republished by ASM Alloy Phase Diagram Center, ASM International, 2007).

  33. O. Ivanov, G. Bagrov, Struct. Alloys Certain Syst. Cont. Uranium Thorium, 1963, pp. 154–76, (Republished by ASM Alloy Phase Diagram Center, ASM International, 2007).

  34. R.J. Perez, B. Sundman, Calphad, 2003, vol. 27, pp. 253-262.

    Article  Google Scholar 

  35. A. PazyPuente, J. Dickson, D. Keiser, Y. Sohn, Int. J. Refract. Met. Hard Mater., 2014, vol. 43, pp. 317–21.

    Article  CAS  Google Scholar 

  36. C. Basak, R. Keswani, G. Prasad, H. Kamath, N. Prabhu, S. Banerjee, Journal of Nuclear Materials, 2009, vol. 393, pp. 146-152.

    Article  CAS  Google Scholar 

  37. F. Rough, A. Bauer, Battelle Memorial Inst., 1958, BMI-1300, p. 41.

  38. R.I. Sheldon, D.E. Peterson, Bulletin of Alloy Phase Diagrams, 1989, vol. 10, pp. 165-171.

    Article  CAS  Google Scholar 

Download references

Acknowledgment

This work was supported by the U.S. Department of Energy, Office of Nuclear Materials Threat Reduction (NA-212), National Nuclear Security Administration, under DOE-NE Idaho Operations Office Contract DE-AC07-05ID14517. Accordingly, the U.S. Government retains a non-exclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes.

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Authors and Affiliations

  1. Advanced Materials Processing and Analysis Center, Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Drive, Orlando, FL, 32816, USA

    Abhishek Mehta, Nicholas Eriksson, Ryan Newell, Le Zhou, Esin Schulz, William Sprowes, Felipe Betancor, Youngjoo Park & Yongho Sohn

  2. Idaho National Laboratory, PO Box 1625, Idaho Falls, ID, 83401, USA

    Dennis D. Keiser Jr.

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  1. Abhishek Mehta
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  2. Nicholas Eriksson
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Correspondence to Yongho Sohn.

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Manuscript submitted June 1, 2018.

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Mehta, A., Eriksson, N., Newell, R. et al. Phase Transformations and Microstructural Development in the U-10 Wt Pct Mo Alloy with Varying Zr Contents After Heat Treatments Relevant to the Monolithic Fuel Plate Fabrication Process. Metall Mater Trans A 50, 72–96 (2019). https://doi.org/10.1007/s11661-018-4987-3

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