An electron backscatter diffraction analysis of grain boundary initiated discontinuous precipitation in U–10Mo
Source abstract
Abstract
Abstract The effect of varied thermomechanical processing on discontinuous precipitation (DP) in U–10Mo was investigated, with specific emphasis on understanding the role of grain boundary misorientation in DP. Varied prior homogenization heat treatment and thermomechanical processing resulted in differences in both the fraction of DP and the colony width, and was attributed to variations in the grain boundary misorientation distribution. Regardless of the degree of DP-based transformation, extensive growth of DP colonies was dominant on 30°–45° misorientation boundaries. Interestingly, misorientation histograms of the deformed and annealed specimens suggest the processing steps involved may have inhibited DP colony growth along a small fraction of these high angle boundaries. Large-area electron backscatter diffraction montages coupled with high resolution mapping suggest symmetric {110}-type interfaces may be important considerations for mitigating extensive DP growth in this alloy system.
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Research context
OpenAlex topics: Nuclear Materials and Properties · Fusion materials and technologies · High Temperature Alloys and Creep
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References (57)
Show source-provided references
1. Irradiation performance of U-Mo monolithic fuel10.5516/NET.07.2014.706 ↗
2. Cahn · 1994 · 10A
3. Properties of DU–10wt% Mo alloys subjected to various post-rolling heat treatments10.1016/j.nucengdes.2010.02.008 ↗
4. Grain boundary engineering to control the discontinuous precipitation in multicomponent U10Mo alloy10.1016/j.actamat.2018.03.039 ↗
5. Reactions de precipitation continue et discontinue dans les alliages U-Mo 1,5%10.1016/0022-3115(70)90047-4 ↗
6. The role of ternary alloying elements in eutectoid transformation of U10Mo alloy, part I: microstructure evolution during arc melting and subsequent homogenization annealing in U9.8Mo0.2X alloy (X = Cr, Ni, Co)10.1016/j.jnucmat.2018.06.024 ↗
7. Transformation kinetics of gamma-phase uranium molybdenum-niobium alloys10.1016/0022-3115(61)90147-7 ↗
8. Massalski · 1990 · vol. 3 · 1485
9. Phase transformation kinetics in rolled U-10 wt. % Mo foil: effect of post-rolling heat treatment and prior γ-UMo grain size10.1016/j.jnucmat.2017.09.030 ↗
10. In situ TEM and synchrotron characterization of U–10Mo thin specimen annealed at the fast reactor temperature regime10.1016/j.matchar.2015.10.031 ↗
11. Hot deformation of U-9 wt% Mo10.1016/j.jnucmat.2016.04.026 ↗
12. The uranium-molybdenum equilibrium diagram below 900° C10.1016/0022-3115(60)90028-3 ↗
13. Kinetics of cellular transformation and competing precipitation mechanisms during sub-eutectoid annealing of U10Mo alloys10.1016/j.jallcom.2017.06.292 ↗
14. The annealing of a quenched uranium-5 at % molybdenum alloy10.1016/0022-3115(62)90195-2 ↗
15. Ageing characteristics of the metastable gamma phase in U–9 wt.% Mo alloy: experimental observations and thermodynamic validation10.1080/14786435.2015.1081300 ↗
16. Microstructural study of gamma phase stability in U–9wt.% Mo alloy10.1016/j.jnucmat.2011.12.005 ↗
17. Phase transitions during artificial ageing of segregated as-cast U–Mo alloys10.1016/j.jnucmat.2014.11.004 ↗
18. Transformation characteristics of U-Mo and U-Mo-Ti alloys
19. Phase transformation of metastable discontinuous precipitation products to equilibrium phases in U10Mo alloys10.1016/j.scriptamat.2018.07.010 ↗
20. On velocity and spacing selection in discontinuous precipitation—I. Simplified analytical approach10.1016/S1359-6454(97)00171-7 ↗
21. Discontinuous reactions in solids10.1179/095066001101528402 ↗
22. Grain boundary discontinuous precipitation reactions10.1179/imr.1981.26.1.153 ↗
23. The kinetics of the discontinuous precipitation and dissolution in Mg-rich Al alloys10.1023/A:1004753122411 ↗
24. Effect of grain boundary misorientation on discontinuous precipitation in an AZ91 alloy10.1007/s12034-011-0345-4 ↗
25. Effects of Ru on the high-temperature phase stability of Ni-base single-crystal superalloys10.1007/BF02586097 ↗
26. Kinetics and grain boundary selectivity of discontinuous precipitation in binary Ni-Cr alloy10.1007/s11661-017-4066-1 ↗
27. Discontinuous cellular precipitation in a high-refractory nickel-base superalloy10.1007/s11661-997-0001-1 ↗
28. Misorientation effect of grain boundary on the formation of discontinuous precipitation in second and third generation single crystal superalloys10.1051/matecconf/20141411006 ↗
29. A quantitative approach to investigate discontinuous precipitation on grain boundary of Ni-based single crystal superalloys10.1016/j.scriptamat.2016.09.031 ↗
30. Discontinuous precipitation at [001] twist boundaries in Cu-0.75 wt pct Be alloy bicrystals10.1007/s11661-001-0118-6 ↗
31. Misorientation dependence of discontinuous precipitation in Cu-Be alloy bicrystals10.1023/A:1026700222794 ↗
32. Grain boundary character dependence on nucleation of discontinuous precipitates in Cu-Ti alloys10.3390/ma10040415 ↗
33. Misorientation effects on discontinuous precipitation in Al–Ag–Ga10.1016/S1359-6454(98)00061-5 ↗
34. U.S.A.E. Commission, The constitution diagram of molybdenum-rich uranium-molybdenum alloys
35. Transformation kinetics of uranium-molybdenum alloys
36. Thermomechanical process optimization of U-10wt% Mo – Part 1: high-temperature compressive properties and microstructure10.1016/j.jnucmat.2013.10.065 ↗
37. Chapter 4 - The Structure and Energy of Grain Boundaries
38. In situ EBSD observation of grain boundary character distribution evolution during thermomechanical process used for grain boundary engineering of 304 austenitic stainless steel10.1016/j.matchar.2017.06.032 ↗
39. ‘Five-parameter’ analysis of grain boundary networks by electron backscatter diffraction10.1111/j.1365-2818.2006.01575.x ↗
40. Initiation and growth of the grain boundary discontinuous precipitation reaction10.1016/0001-6160(81)90025-0 ↗
41. Application of electron backscatter diffraction to grain boundary characterisation10.1179/095066004225010514 ↗
42. Description of the intercrystalline structure distribution in polycrystalline materials10.1007/BF02645918 ↗
43. Measurement and representation of grain-boundary texture10.1007/BF02658054 ↗
44. Determining crystal habits from observations of planar sections10.1111/j.1151-2916.2002.tb00531.x ↗
45. Thermomechanical process optimization of U-10wt% Mo – Part 2: The effect of homogenization on the mechanical properties and microstructure10.1016/j.jnucmat.2015.07.005 ↗
46. Modeling the homogenization kinetics of as-cast U-10wt% Mo alloys10.1016/j.jnucmat.2015.11.026 ↗
47. Devaraj · 2016
48. Second paper on statistics associated with the random disorientation of cubes10.1093/biomet/45.1-2.229 ↗
49. The coincident axial direction (CAD) approach to grain boundary structure10.1007/BF01153992 ↗
50. A plane matching theory of high angle grain boundary structure10.1016/0036-9748(72)90260-8 ↗
51. Molodov · 2013
52. Morphology of cellular precipitation of tin from lead-tin bicrystals10.1016/0001-6160(67)90214-3 ↗
53. Grain boundary energies in body-centered cubic metals10.1016/j.actamat.2015.01.069 ↗
54. Initiation and growth of the discontinuous precipitation reaction at [011] symmetric tilt boundaries in Cu–Be alloy bicrystals10.1016/j.actamat.2004.11.019 ↗
55. Bulatov · 2013
56. Correlation between Crystallographic orientation and surface faceting in UO210.1016/j.jnucmat.2016.05.044 ↗
57. Non-Destructive Characterization of UO2+x Nuclear Fuels10.1017/S155192951700102X ↗