Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Wenman, M. R."'
A nonlinear phase-field model is developed to simulate corrosion damage. The motion of the electrode$-$ electrolyte interface follows the usual kinetic rate theory for chemical reactions based on the Butler-Volmer equation. The model links the surfac
Externí odkaz:
http://arxiv.org/abs/2408.14905
An electro-chemo-mechanical phase-field formulation is developed to simulate pitting and stress corrosion in polycrystalline materials. The formulation incorporates dependencies of mechanical properties and corrosion potential on crystallographic ori
Externí odkaz:
http://arxiv.org/abs/2403.20301
Atom probe tomography is commonly used to study solute clustering and precipitation in materials. However, standard techniques, such as the density based spatial clustering applications with noise (DBSCAN) perform poorly with respect to small cluster
Externí odkaz:
http://arxiv.org/abs/2402.13734
A variant of the U-Net convolutional neural network architecture is proposed to estimate linear elastic compatibility stresses in a-Zr (hcp) polycrystalline grain structures. Training data was generated using VGrain software with a regularity alpha o
Externí odkaz:
http://arxiv.org/abs/2303.08541
Autor:
Weekes, H. E., Dye, D., Proctor, J. E., Smith, D. S., Simionescu, C., Prior, T. J., Wenman, M. R.
The effect of pressure on the room temperature solubility of hydrogen in Zircaloy-4 was examined using synchrotron X-ray diffraction on small ground flake samples in a diamond anvil cell at pressures up to 20.9 GPa. Different combinations of hydrogen
Externí odkaz:
http://arxiv.org/abs/1806.09657
Akademický článek
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Akademický článek
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Publikováno v:
Journal of Applied Physics 117, 084901 (2015)
Atomic scale computer simulations using density functional theory were used to investigate the behaviour of tin in the tetragonal phase oxide layer on Zr-based alloys. The $Sn_{Zr}^{\times}$ site defect was shown to be dominant across most oxygen par
Externí odkaz:
http://arxiv.org/abs/1502.06883
Autor:
Burr, P. A., Wenman, M. R., Gault, B., Moody, M. P., Ivermark, M., Rushton, M. J. D., Preuss, M., Edwards, L., Grimes, R. W.
Publikováno v:
Journal of Nuclear Materials, 467 (2015) 320-331
To understand the mechanisms by which Fe and Cr additions increase the corrosion rate of irradiated Zr alloys, a combination of experimental (atom probe tomography, x-ray diffraction and thermoelectric power measurements) and modelling (density funct
Externí odkaz:
http://arxiv.org/abs/1501.06732
Autor:
Lumley, S. C., Grimes, R. W., Murphy, S. T., Burr, P. A., Chroneos, A., Chard-Tucke, P. R., Wenman, M. R.
Publikováno v:
Acta Mater. 79 (2014) 351-362
The thermodynamics of H/{\alpha}-Zr solid solution and zirconium hydride phases were studied using density functional theory. Disorder in {\zeta}, {\gamma} and {\delta} hydrides and solid solutions were modelled using a statistically significant numb
Externí odkaz:
http://arxiv.org/abs/1401.5637