A5053431783- Metallic Glasses and Amorphous Alloys
- Material Dynamics and Properties
- Surface Roughness and Optical Measurements
- Glass properties and applications
- Material Science and Thermodynamics
- Advanced Surface Polishing Techniques
- Force Microscopy Techniques and Applications
- Metal and Thin Film Mechanics
- High Entropy Alloys Studies
- Phase-change materials and chalcogenides
- Advanced MEMS and NEMS Technologies
- Cultural Heritage Materials Analysis
- Material Properties and Applications
- Theoretical and Computational Physics
- Microstructure and mechanical properties
- Aluminum Alloys Composites Properties
- Nanofabrication and Lithography Techniques
- Advanced ceramic materials synthesis
- nanoparticles nucleation surface interactions
- Adhesion, Friction, and Surface Interactions
- Copper Interconnects and Reliability
- Advanced materials and composites
- Metal Alloys Wear and Properties
- Electrodeposition and Electroless Coatings
- 3D IC and TSV technologies
Science et Ingénierie des Matériaux et Procédés
2012-2022
Université Grenoble Alpes
2011-2022
Institut polytechnique de Grenoble
2010-2019
Centre National de la Recherche Scientifique
2010-2019
Université Joseph Fourier
2009-2019
UCLouvain
2008
Laboratoire d’Electrochimie et de Physico-chimie des Matériaux et des Interfaces
2006-2007
Abstract Room-temperature plasticity in metallic glasses (MGs) is commonly associated with local structural heterogeneity; however, direct observation of the subtle change caused by vitally important but data are extremely scarce. Based on dynamic atomic force microscopy (DAFM), here we show that plasticity-induced evolution a Zr-Ni MG can be revealed via nano-scale viscoelastic contacts between an AFM tip and plastically deformed surface layers. Our experimental results clearly spatial...
Metallic glasses display interesting mechanical properties including high resistance and large capacity to store elastic energy. Since metallic can now be produced in bulk conditions, they used for structural applications. In this new context, thermoforming of a particularly well adapted technique production small size components with good surface finish. As other glasses, preferentially thermoformed their supercooled liquid region. However, since are still emerging materials, the mechanisms...
Abstract The fundamental plasticity mechanisms in thin freestanding Zr 65 Ni 35 metallic glass films are investigated order to unravel the origin of an outstanding strength/ductility balance. deformation process is homogenous until fracture with no evidence catastrophic shear banding. creep/relaxation behaviour was characterized by on-chip tensile testing, revealing activation volume range 100–200 Å 3 . Advanced high-resolution transmission electron microscopy imaging and spectroscopy...
Abstract High-temperature deformation of a ZrTiCuNiBe bulk metallic glass (BMG) is investigated by compression tests in the supercooled liquid region. When temperature decreased or strain rate increased, amorphous alloy exhibits usual Newtonian/non-Newtonian transition behaviour. Using specific heat treatments, partially crystallized alloys are produced, associated microstructures characterized and volume fractions crystal measured. The interaction between high-temperature crystallization...
New Metallic Glass/Alloy (MEGA)‐rods with a core in bulk metallic glass (zirconium or magnesium based BMG) and sleeve conventional light alloys (Al‐5056 Mg‐AZ31) have been elaborated by co‐extrusion carried out at temperatures corresponding to the supercooled liquid region of glass. For most glass/alloy combinations, this process leads defect‐free interfaces therefore good compressive strengths which can be described rule mixtures.