Radiation-induced solute segregation in metallic alloys

AJ Ardell, P Bellon - Current Opinion in Solid State and Materials Science, 2016 - Elsevier
The subject of radiation-induced solute segregation (RIS) in metallic alloys is reviewed. RIS
manifests itself in several different ways, including diffusion to point-defect sinks …

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 …

Exact ab initio transport coefficients in bcc (, , , , , ) dilute alloys

L Messina, M Nastar, T Garnier, C Domain, P Olsson - Physical Review B, 2014 - APS
Defect-driven diffusion of impurities is the major phenomenon leading to formation of
embrittling nanoscopic precipitates in irradiated reactor pressure vessel (RPV) steels …

Effects of Yb and Zr microalloying additions on the microstructure and mechanical properties of dilute Al–Sc alloys

ME Van Dalen, T Gyger, DC Dunand, DN Seidman - Acta Materialia, 2011 - Elsevier
It is known that Zr and Yb partition to the Al3Sc precipitates created during aging when
microalloyed separately in dilute binary Al–Sc alloys. Addition of Zr delays precipitate …

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 …

Modeling radiation induced segregation in iron–chromium alloys

O Senninger, F Soisson, E Martínez, M Nastar, CC Fu… - Acta Materialia, 2016 - Elsevier
Radiation induced segregation in ferritic Fe–Cr alloys is studied by Atomistic Kinetic Monte
Carlo simulations that include diffusion of chemical species by vacancy and interstitial …

KineCluE: A kinetic cluster expansion code to compute transport coefficients beyond the dilute limit

T Schuler, L Messina, M Nastar - Computational Materials Science, 2020 - Elsevier
This paper introduces the KineCluE code that implements the self-consistent mean-field
theory for clusters of finite size. Transport coefficients are obtained as a sum over cluster …

[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 …

Automatic numerical evaluation of vacancy-mediated transport for arbitrary crystals: Onsager coefficients in the dilute limit using a Green function approach

DR Trinkle - Philosophical Magazine, 2017 - Taylor & Francis
A general solution for vacancy-mediated diffusion in the dilute-vacancy/dilute-solute limit for
arbitrary crystal structures is derived from the master equation. A general numerical …

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 …