{"id":6848,"date":"2022-03-04T17:25:47","date_gmt":"2022-03-04T16:25:47","guid":{"rendered":"https:\/\/lgf.mines-stetienne.fr\/teams\/pmm\/deformation-microstructures-research-area\/"},"modified":"2026-05-13T15:33:07","modified_gmt":"2026-05-13T13:33:07","slug":"deformation-microstructures-research-area","status":"publish","type":"page","link":"https:\/\/lgf.mines-stetienne.fr\/en\/teams\/pmm\/deformation-microstructures-research-area\/","title":{"rendered":"Deformation & Microstructures Research Area"},"content":{"rendered":"
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The evolution of polycrystalline microstructures during deformation processes (rolling, forging, etc.) is complex and has a significant impact on the material’s final mechanical properties. Optimizing microstructures requires a better understanding of the physical mechanisms involved during the different stages. We develop and utilize experimental, modeling\/simulation, and theoretical methods to better understand and control microstructural evolutions:<\/p>\n

The development of local characterization methods (HR-EBSD, X-ray diffraction in the laboratory and at synchrotrons)<\/strong> allows for the in situ or ex situ local analysis of microstructures and their evolution (crystalline orientations, dislocation densities, elastic deformations, etc.)<\/p>\n

The development of microstructural evolution modeling and simulation methods<\/strong> allows for the prediction of microstructural evolutions during deformation. We develop both full-field approaches, such as crystal plasticity finite elements, particularly through the development of the Neper software (and FEPX), as well as mean-field approaches.<\/p>\n

The analysis of microstructural evolutions associated with deformation,<\/strong> whether linked to crystal rotations induced by plasticity (deformation textures and microtextures) or to restoration and recrystallization phenomena (static and\/or dynamic), improves the understanding of the mechanical and physical mechanisms at play locally, from which new concepts and models are developed that can be utilized in both academic and industrial settings.<\/p>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text css=””]\n

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Development of microtextures in plane-strain compression: experiments and simulations<\/figcaption><\/figure>\n

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Relationship between deformation microstructure and recrystallization nucleation in an aluminium tricrystal, and the concept of “primary stored energy”<\/figcaption><\/figure>\n

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Other research areas<\/h3>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column]