Plasticity of UO2 studied and quantified via elevated temperature micro compression testing
Source abstract
Abstract
Abstract Small scale mechanical testing has many beneficial features including the ability to sample the properties of a single crystal over a wide temperature range. This manuscript presents the results of high temperature, in-situ scanning electron microscope microcompression testing of a single crystal of UO2. Observations indicated that the UO2 microcompression specimens deformed in a ductile fashion at temperatures of 350 °C and above. The slip traces on the micro-compression specimens after deformation appeared on the {100}1/2 system at the temperatures and orientation tested. Lastly, the Peierls stress of UO2 is calculated using the microcompression data.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear Materials and Properties · Fusion materials and technologies · Nuclear reactor physics and engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Nuclear fuels-present and future10.1016/j.jnucmat.2009.01.297 ↗
2. Multidimensional multiphysics simulation of nuclear fuel behavior10.1016/j.jnucmat.2012.01.012 ↗
3. Multiphysic coupled modeling of light water reactor fuel performance10.1016/j.pnucene.2016.03.030 ↗
4. Fuel performance of light water reactors (uranium oxide and MOX)10.1016/B978-0-08-056033-5.00040-9 ↗
5. Dependence on strain rate and temperature shown by yield stress of uranium dioxide10.1080/18811248.1976.9734063 ↗
6. Yield and flow of polycrystalline uranium dioxide10.1016/0022-3115(68)90006-8 ↗
7. Plastic deformation in nonstoichiometric UO2+x single crystals—1. deformation at low temperatures10.1016/0001-6160(88)90160-5 ↗
8. Compressive deformation of polycrystalline UO210.1111/j.1151-2916.1975.tb11474.x ↗
9. The strength and fracture of stoichiometric polycrystalline UO210.1016/0022-3115(69)90019-1 ↗
10. Deformation of UO2 at high temperatures10.1111/j.1151-2916.1971.tb12230.x ↗
11. Small-scale mechanical testing of UO2
12. Elevated temperature nanoindentation testing of UO 2
13. Young's modulus evaluation of high burnup structure in UO2 with nanometer resolution10.1016/j.jnucmat.2018.04.004 ↗
14. Peierls-Nabarro modeling of dislocations in UO210.1016/j.jnucmat.2017.08.024 ↗
15. Crystal viscoplastic modeling of UO2 single crystal10.1016/j.jnucmat.2018.06.035 ↗
16. Glide Mobility of the ½[110](001) edge dislocation in UO2 from molecular dynamics simulation10.1016/j.ijplas.2016.11.004 ↗
17. A comparison of empirical potential models for the simulation of dislocations in uranium dioxide10.1016/j.pnucene.2013.09.010 ↗
18. Plastic deformation in nonstoichiometric UO2+x single crystals—II. deformation at high temperatures10.1016/0001-6160(88)90161-7 ↗
19. The yield and flow of single crystals of uranium dioxide10.1016/0022-3115(68)90062-7 ↗
20. S. Korte-Kerzel “On extracting mechanical properties from nanoindentation at temperature up to 1000 ºC”10.1016/j.eml.2017.09.007 ↗
21. Extreme nanomechanices: vacuum nanoindentation and nanotribology to 950 ºC10.1080/17515831.2015.1107345 ↗
22. High temperature nanoindentation: the state of the art and future challenges10.1016/j.cossms.2015.02.002 ↗
23. Ductile-brittle transition in micropillar compression of GaAs at room temperature10.1080/14786435.2010.509286 ↗
24. Anisotropic thermal conductivity in uranium dioxide10.1038/ncomms5551 ↗
25. The low temperature oxidation of UO2 and U4O9∗10.1016/0022-1902(61)80384-9 ↗
26. Thermodynamic assessment of the uranium—oxygen system10.1016/S0022-3115(02)00878-4 ↗
27. Deformation of hyperstoichiometric UO2 single crystals10.1111/j.1151-2916.1971.tb16019.x ↗
28. Peierls stresses estimated from CRSS vs. Temperature curve and their relation to the crystal structure10.4028/www.scientific.net/KEM.465.97 ↗
29. Pipe diffusion at dislocations in UO210.1016/j.jnucmat.2013.12.029 ↗
30. Geometric analysis of charged dislocations in the fluorite structure10.1002/pssb.19700400231 ↗
31. Atomistically-informed thermal glide model for edge dislocations in uranium dioxide10.1016/j.actamat.2018.03.024 ↗