Etude des transformations de phase rapides par approches combinées d'expériences de chauffage pulsé et de modélisation thermodynamique avec interface hors équilibre // Studying rapid solid-state phase transformations by combining controlled pulse heating

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The purpose of the project is understanding the influence of the thermodynamic state of the interface on transformation mechanisms and phase selections. The transitions under focus are (massive-type transformation) from diffusion controlled to interface-diffusion controlled and (martensitic-type transformation) from interface-diffusion controlled to interface controlled. The conditions at the interface are characterized analyzing its thermodynamic state by combining experiment and simulation.

Partner Friedrich Schiller University Jena (FSU, Germany) will develop controlled pulse heating experiments that allow for an in-situ, high resolution measurement of T-t curves and their assignment to local microstructures as well as high resolution electron microscopy/spectroscopy are employed.

Partner Mines Paris will develop a thermodynamic and kinetic model that considers velocity-dependent phase equilibria and interface thermodynamics. Being fully coupled with Calphad databases, simulations of the experiments will be performed to reach direct one-to-one comparisons. The combination of the experimental and numerical investigations will be the foundation for this collaborative project and its final goal: revisit interpretations of the transitions between solid-state transformations involving massive type interface diffusion-controlled reactions.
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Début de la thèse : 01/10/2025
WEB : https://www.cemef.minesparis.psl.eu/wp-content/uploads/2024/10/Phd_RAPID_CEMEF.pdf

Other public funding

ANR Financement d'Agences de financement de la recherche

Mines Paris-PSL

364 SFA - Sciences Fondamentales et Appliquées

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Engineer or Master 2, in the fields of physics, materials or mechanics. Student attracted by topics related to modelling and numerical simulation of physical phenomena and materials engineering. The PhD student will receive the training necessary for his research activities, including scientific computing and programming, in particular to master the dedicated computing tools