[Simulation à l'échelle mésoscopique de la cinétique des transformations de phases solide–solide : Le choix des compositions d'interface pour une croissance de forme constante]
On présente dans cet article une rapide revue de l'état de l'art sur la question du choix des conditions à l'interface (ou conditions aux limites) pour des transformations de phases contrôlées par la diffusion, modélisées à l'échelle mésoscopique. On décline les procédés physiques qui sont actuellement admis comme contrôlant ces compositions d'interface, et les hypothèses sous jacentes aux différents choix communément sélectionnés. On insiste sur la nécessité de coupler correctement, dans une approche multiéchelle, impliquant en particulier l'échelle mésoscopique pour la description des champs de diffusion, et l'échelle atomistique pour décrire les procédés spécifiques de l'interface.
A brief overview of the current state-of-the-art in choosing the interfacial compositions (or boundary conditions), for mesoscale, diffusion-controlled phase transformations, as practiced by the numerical metallurgy community, is presented. The physical processes that are currently thought to influence these values and the assumptions underlying the most common choices for the interfacial compositions are outlined. The need for a properly coupled, multiscale approach, that uses mesoscale simulation techniques to describe diffusion in the bulk phases, and atomistic simulation tools to describe the processes occurring within the interface (that influence the boundary conditions for the diffusion problem), is highlighted.
Mot clés : Compositions interfaciales, Trainage de solute, Mobilite des interfaces, Croissance contrôlée par la diffusion
Christopher R. Hutchinson 1 ; Hatem S. Zurob 2
@article{CRPHYS_2010__11_3-4_257_0, author = {Christopher R. Hutchinson and Hatem S. Zurob}, title = {Mesoscale simulations of the kinetics of solid{\textendash}solid phase transformations: {Selecting} the relevant interfacial compositions for shape-preserved growth}, journal = {Comptes Rendus. Physique}, pages = {257--264}, publisher = {Elsevier}, volume = {11}, number = {3-4}, year = {2010}, doi = {10.1016/j.crhy.2010.07.006}, language = {en}, }
TY - JOUR AU - Christopher R. Hutchinson AU - Hatem S. Zurob TI - Mesoscale simulations of the kinetics of solid–solid phase transformations: Selecting the relevant interfacial compositions for shape-preserved growth JO - Comptes Rendus. Physique PY - 2010 SP - 257 EP - 264 VL - 11 IS - 3-4 PB - Elsevier DO - 10.1016/j.crhy.2010.07.006 LA - en ID - CRPHYS_2010__11_3-4_257_0 ER -
%0 Journal Article %A Christopher R. Hutchinson %A Hatem S. Zurob %T Mesoscale simulations of the kinetics of solid–solid phase transformations: Selecting the relevant interfacial compositions for shape-preserved growth %J Comptes Rendus. Physique %D 2010 %P 257-264 %V 11 %N 3-4 %I Elsevier %R 10.1016/j.crhy.2010.07.006 %G en %F CRPHYS_2010__11_3-4_257_0
Christopher R. Hutchinson; Hatem S. Zurob. Mesoscale simulations of the kinetics of solid–solid phase transformations: Selecting the relevant interfacial compositions for shape-preserved growth. Comptes Rendus. Physique, Volume 11 (2010) no. 3-4, pp. 257-264. doi : 10.1016/j.crhy.2010.07.006. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2010.07.006/
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