Solute diffusion by self-interstitial defects and radiation-induced segregation in ferritic Fe–X (X= Cr, Cu, Mn, Ni, P, Si) dilute alloys

L Messina, T Schuler, M Nastar, MC Marinica, P Olsson - Acta Materialia, 2020 - Elsevier
This work investigates solute transport due to self-interstitial defects and radiation induced
segregation tendencies in dilute ferritic alloys, by computing the transport coefficients of …

Ladder mechanisms of ion transport in Prussian blue analogues

J Nordstrand, E Toledo-Carrillo… - … Applied Materials & …, 2021 - ACS Publications
Prussian blue (PB) and its analogues (PBAs) are drawing attention as promising materials
for sodium-ion batteries and other applications, such as desalination of water. Because of …

Efficient and transferable machine learning potentials for the simulation of crystal defects in bcc Fe and W

AM Goryaeva, J Dérès, C Lapointe, P Grigorev… - Physical Review …, 2021 - APS
Data-driven, or machine learning (ML), approaches have become viable alternatives to
semiempirical methods to construct interatomic potentials, due to their capacity to accurately …

Impact of micro-alloying in ion-irradiated nickel: From the inhibition of point-defect cluster diffusion by thermal segregation to the change of dislocation loop nature

K Ma, B Décamps, L Huang, RE Schäublin, JF Löffler… - Acta Materialia, 2023 - Elsevier
Micro-alloying strongly affects the incubation period of void swelling in irradiated face-
centered cubic materials. However, the underlying mechanism, which relates to the …

[PDF][PDF] 1.18-Radiation-induced segregation

M Nastar, F Soisson - Comprehensive nuclear materials, 2012 - researchgate.net
Irradiation creates excess point defects in materials (vacancies and self-interstitial atoms),
which can be eliminated by mutual recombination, clustering, or annihilation of preexisting …

Predicting atomic diffusion in concentrated magnetic alloys: The case of paramagnetic Fe-Ni

K Li, CC Fu, M Nastar, F Soisson - Physical Review B, 2023 - APS
Predicting atomic diffusion in concentrated magnetic systems is challenging due to thermal
magnetic effects and complex magnetochemical interplay. We propose an efficient approach …

Hydrogen diffusion coefficient in monoclinic zirconia in presence of oxygen vacancies

E Haurat, JP Crocombette, T Schuler… - International Journal of …, 2022 - Elsevier
To better understand the hydrogen diffusion mechanisms in monoclinic zirconia that take
place in fuel rod cladding during reactor operation, we calculate the diffusion paths of …

Sodium to cesium ions: a general ladder mechanism of ion diffusion in prussian blue analogs

J Nordstrand, E Toledo-Carrillo, L Kloo… - Physical Chemistry …, 2022 - pubs.rsc.org
Prussian blue analogs (PBAs) form crystals with large lattice voids that are suitable for the
capture, transport and storage of various interstitial ions. Recently, we introduced the …

Machine learning surrogate models for strain-dependent vibrational properties and migration rates of point defects

C Lapointe, TD Swinburne, L Proville, CS Becquart… - Physical Review …, 2022 - APS
Machine learning surrogate models employing atomic environment descriptors have found
wide applicability in materials science. In our previous work, this approach yielded accurate …

Radiation induced segregation near dislocations and symmetric tilt grain boundaries in Fe-Cr alloys: A phase-field study

GFB Moladje, L Thuinet, CS Becquart, A Legris - Acta Materialia, 2022 - Elsevier
A phase-field model dedicated to dislocation climb under irradiation has been coupled to
point defects and chemical species transport equations. It allows to predict radiation induced …