[Accreditation to Supervise Research] Pierre-Antoine Dubos – Experimental contributions to understand the mechanical behaviour of materials. «Multiscale studies of mechanical properties-microstructure relationships»
Monday 10 March à 14 h 00 – 15 h 00
Pierre-Antoine Dubos, Associate Professor at GeM, IUT Saint-Nazaire, will present his work for the accreditation to supervise research (Habilitation à Diriger des Recherches) on 10th March 2025 at 2:00 pm at the Heinlex Campus in Saint-Nazaire (Building 17 – Seminar Room) on the following topic:
Experimental contributions to understand the mechanical behaviour of materials.
«Multiscale studies of mechanical properties-microstructure relationships»
>> Learn more about the work and career of Pierre-Antoine Dubos
Composition of the jury :
- Monsieur Benoît APPOLAIRE, Professeur, Université de Lorraine
- Monsieur David GLOAGUEN, Professeur, Nantes Université
- Monsieur Olivier HUBERT, Professeur, ENS Paris-Saclay, Université Paris-Saclay
- Madame Mathilde LAURENT-BROCQ, Chargée de recherche HDR, CNRS-Université Paris-Est Créteil
- Madame Sylvie MALO, Professeure, École nationale supérieure d’ingénieurs de Caen, ComUE Normandie Université
- Madame Mireille RICHARD PLOUET, Directrice de recherche, CNRS-Nantes Université
- Monsieur Damien TEXIER, Chargé de recherche HDR, CNRS-IMT Mines Albi-ComUE Université de Toulouse
Abstract :
Most industrial applications require a good understanding of the mechanical behaviour of materials
and their relationship to manufacturing processes or in-service stresses. To help improve this understanding, my research approach is to characterise these properties using the microstructure as the main vector of investigation.
This involves multi-scale analyses of mainly metallic materials, with optimisation as the main objective. A
particular focus on miniaturisation and deformation mechanisms is driving this research. The development of in situ thermo-mechanical tests makes it possible to establish the relationships between the process-microstructureproperties triptych, at the heart of many of actual key issues.
Keywords : Materials, Metallurgy, Multi-scale characterisation, Microstructure, Mechanical properties
Pierre-Antoine DUBOS has been Associate Professor at GeM (UMR CNRS 6183) at the IUT Saint-Nazaire since September 2016. Before joining the laboratory, he obtained a PhD in solid state chemistry, specialized in mechanics and metallurgy, from the CRISMAT laboratory at the University of Caen in Normandy.
His work focuses on the relationships between the shaping, mechanical behavior and resulting microstructures of metallic materials. In particular, he is interested in the evolution of the microstructure of metals undergoing plastic deformation during thermo-mechanical stress or forming processes (rolling, stamping, drawing, welding, additive manufacturing). The aim is to study the behavior of these materials experimentally, at different scales, in order to feed numerical calculation codes and be able to predict potential problems during forming or in-service stresses.
To carry out this research, Pierre-Antoine is developing microstructural analyses coupled with in situ micro-thermomechanical tests that can be adapted to a range of equipment (high-resolution scanning electron microscope with chemical and crystallographic microanalyses, high-resolution nanoindentation, X-ray diffraction).