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 …

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 …

Systematic electronic-structure investigation of substitutional impurity diffusion and flux coupling in bcc iron

L Messina, M Nastar, N Sandberg, P Olsson - Physical Review B, 2016 - APS
The diffusion properties of a wide range of impurities (transition metals and Al, Si, and P) in
ferritic alloys are here investigated by means of a combined ab initio–atomic diffusion theory …

Magnetochemical effects on phase stability and vacancy formation in fcc fe-ni alloys

K Li, CC Fu, M Nastar, F Soisson, MY Lavrentiev - Physical Review B, 2022 - APS
We investigate phase stability and vacancy formation in fcc Fe-Ni alloys over a broad
composition-temperature range, via a density functional theory parametrized effective …

Atomic diffusion in bcc Fe–Mn alloys: Theoretical analysis and experimental measurements across the Curie temperature

V Kulitckii, A Schneider, O Lukianova, G Wilde, CC Fu… - Acta Materialia, 2023 - Elsevier
The influence of a magnetic transition on Fe and Mn diffusion in bcc Fe–Mn alloys as a
function of Mn concentration is studied combining experimental measurements and DFT …

Ab initio modeling of decomposition in iron based alloys

OI Gorbatov, YN Gornostyrev, PA Korzhavyi… - Physics of Metals and …, 2016 - Springer
This paper reviews recent progress in the field of ab initio based simulations of structure and
properties of Fe-based alloys. We focus on thermodynamics of these alloys, their …

Fast, vacancy-free climb of prismatic dislocation loops in bcc metals

TD Swinburne, K Arakawa, H Mori, H Yasuda… - Scientific reports, 2016 - nature.com
Vacancy-mediated climb models cannot account for the fast, direct coalescence of
dislocation loops seen experimentally. An alternative mechanism, self climb, allows …

Atomic relaxation around defects in magnetically disordered materials computed by atomic spin constraints within an efficient Lagrange formalism

O Hegde, M Grabowski, X Zhang, O Waseda, T Hickel… - Physical Review B, 2020 - APS
Lattice and magnetic degrees of freedom are strongly coupled in magnetic materials. We
propose a consistent first-principles framework to explore the joint configurational space. For …

First-principles study of interactions between substitutional solutes in bcc iron

OI Gorbatov, AH Delandar, YN Gornostyrev… - Journal of Nuclear …, 2016 - Elsevier
Using density functional theory based calculations, employing the locally self-consistent
Green's function method and the projected augmented wave method, we develop a …

Atomic Diffusion in -iron across the Curie Point: An Efficient and Transferable Ab Initio–Based Modeling Approach

A Schneider, CC Fu, F Soisson, C Barreteau - Physical Review Letters, 2020 - APS
An accurate prediction of atomic diffusion in Fe alloys is challenging due to thermal
magnetic excitations and magnetic transitions. We propose an efficient approach to address …