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Développement d'alliages de titane transformables par déformation : étude des relations microstructure/propriétés mécaniques

Abstract : The work concerns the development of new titanium alloys possessing unique properties of plastic deformation (distortion) (a ductility near 3 times superior to the classic alloys) and work hardening. An initial work (CIFRE PhD of Cédrik Brozek, 2013-2016) allowed to transpose approaches used initially on model alloys (Ti-Mo in particular), in materials potentially industrialisables with the aim of applications in the field of the aeronautics. It is on these new industrialisables nuances, based on the system Ti-Cr-Sn that we wish today to base the collaboration with our industrial partner. These alloys possess the capacity to be transformed under constraint, by maclage mechanics and transformation of induced phase, they possess a new combination of properties (a very important ductility accompanied with a work hardening not yet reached in the alloys of titanium) but they are also characterized by a very high microstructural complexity on which we don't possess that much informations for the moment. The project concerns the study of the relations microstructures / mechanical properties in this new family of titanium alloys (alloys "TRIP/TWIP")
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Yolaine Danard. Développement d'alliages de titane transformables par déformation : étude des relations microstructure/propriétés mécaniques. Autre. Université Paris sciences et lettres, 2019. Français. ⟨NNT : 2019PSLEC035⟩. ⟨tel-03204140⟩

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