Thermal ratcheting of uranium simulated with a thermo-elasto-visco-plastic self-consistent polycrystal model

Y Jeong, CN Tomé - Journal of Nuclear Materials, 2024 - Elsevier
Uranium polycrystal aggregates accumulate large plastic deformation during thermal cycling
in a process known as thermal ratcheting. This process is induced by highly anisotropic …

Influence of ultrasonic surface rolling process on surface characteristics and micro-mechanical properties of uranium

D Chen, J Liu, D Chen, R Li, C Ma, M Wang… - Materials Chemistry and …, 2022 - Elsevier
Ultrasonic surface rolling process (USRP) is a novel surface modification technique based
on surface severe plastic deformation (SSPD). The present study aims to investigate the …

[HTML][HTML] Characterisation of slip and twin activity using digital image correlation and crystal plasticity finite element simulation: Application to orthorhombic α-uranium

N Grilli, P Earp, ACF Cocks, J Marrow… - Journal of the Mechanics …, 2020 - Elsevier
Calibrating and verifying crystal plasticity material models is a significant challenge,
particularly for materials with a number of potential slip and twin systems. Here we use …

Transmission electron microscopy investigation of phase transformation and fuel constituent redistribution in neutron irradiated U-10wt.% Zr fuel

J Thomas, X Liu, L He, D Murray, F Teng… - Journal of Nuclear …, 2023 - Elsevier
Abstract Uranium-10 wt.% zirconium (U-10 wt.% Zr) is a primary candidate for fast reactor
nuclear fuels. However, there is a lack of data characterizing the crystallographic phases …

Orientation-dependent deformation mechanisms of alpha-uranium single crystals under shock compression

Y Huang, P Li, S Yao, K Wang, W Hu - International Journal of Plasticity, 2024 - Elsevier
Large-scale non-equilibrium molecular dynamics (NEMD) simulations were employed to
investigate the dynamic deformations of alpha-uranium (α-U) single crystals subjected to …

[HTML][HTML] Crystal plasticity finite element modelling of coarse-grained α-uranium

N Grilli, ACF Cocks, E Tarleton - Computational Materials Science, 2020 - Elsevier
The deformation behaviour of coarse-grained α-uranium is studied using crystal plasticity
finite element simulations. The constitutive model includes 8 slip and 2 twin systems, based …

Investigation of the microstructure evolution of alpha uranium after in pile transient

FG Di Lemma, X Liu, TV Holschuh II, CP Folsom… - Journal of Nuclear …, 2020 - Elsevier
This work describes the microstructural evolution of textured alpha uranium (α-U) specimens
under different reactor transients achieving very low burn-up. The understanding of the …

Assessing the influence of microstructure on uranium hydride size distributions via small angle neutron scattering

Z Harris, E Garlea, T Boyd, L DeBeer-Schmitt, K Littrell… - Materialia, 2023 - Elsevier
The effect of microstructure on the internal hydriding behavior of both cast (1 mm grain size)
and rolled (25 μm grain size) uranium containing hydrogen concentrations between 0 and …

Novel use of a hand-held laser induced breakdown spectroscopy instrument to monitor hydride corrosion in uranium

E Garlea, BN Bennett, MZ Martin, RL Bridges… - … Acta Part B: Atomic …, 2019 - Elsevier
Using a compact hand-held laser-induced breakdown spectroscopy (LIBS) instrument,
studies were conducted on specimens of uranium charged with controlled hydrogen …

Interface structure of (130) twin in the U-14.0 at.% Nb alloy: an experimental and theoretical study

X Wang, W Wang, C Lu, Y Zhao, R Qiu, T Shi, P Zhou… - Scripta Materialia, 2022 - Elsevier
In this work, we report an experimental and theoretical study of the (130) twin system in the
U-14.0 at.% Nb alloy using aberration-corrected TEM in combination with first-principles …