Alloy design and microstructures
Keywords
- compositionally complex alloys
- materials design
- defects
- phase diagrams
- alloy processing
- materials mechanics
- microstructures
- transport phenomena
- phase precipitation
Group leader
Members
Non permanent researchers
Scientific activities
The CAM group carries out in-depth multi-scale studies of new materials for structural and functional applications, mainly in the transportation and energy fields. Studied materials differ from their structure (diluted metallic alloys, complex concentrated alloys or HEAs, intermetallics, oxide ceramics), from the defects they contain (dislocations, interfaces, precipitates, non-stoichiometry) or from their origin (materials prepared at ICMPE, industrial alloys, heritage objects). Design approaches are at the heart of these activities and most often proceed by multiple selection (Calphad approach, DFT, electronic structure…). They aim to create original microstructures which are then processed, controlled and optimized using the resources of the ICMPE’s metallurgical preparation platform. The final properties (chemical, physical or mechanical) of these new materials are also measured and studied. The main objective is to understand and finally model the microstructural mechanisms involved when these materials are subjected to any type of stress, through in-depth structural and analytical characterization down to the atomic scale.
The main themes developed within the group are listed as follows (non-exhaustive list):
- Alloy design of complex metallic alloys: multicomponent and high-entropy alloys (HEAs), architectured alloys
- Intermetallics
- Plastic deformation of metallic alloys, understanding of the underlying deformation mechanisms
- Heritage objects
- Influence of shaping on properties of materials (melting, thermomechanical processes, SPS process)
Illustrations
