A5001187631- Fusion materials and technologies
- Nuclear Materials and Properties
- Ion-surface interactions and analysis
- Advanced Materials Characterization Techniques
- Microstructure and mechanical properties
- High Temperature Alloys and Creep
- Hydrogen embrittlement and corrosion behaviors in metals
- Intermetallics and Advanced Alloy Properties
- Nuclear reactor physics and engineering
- Microstructure and Mechanical Properties of Steels
- Nuclear materials and radiation effects
- Semiconductor materials and interfaces
- Glass properties and applications
- Integrated Circuits and Semiconductor Failure Analysis
- Metallic Glasses and Amorphous Alloys
- Aluminum Alloy Microstructure Properties
- Titanium Alloys Microstructure and Properties
- Silicon and Solar Cell Technologies
- Nuclear Physics and Applications
- Thermodynamic and Structural Properties of Metals and Alloys
- Semiconductor materials and devices
- Metallurgical Processes and Thermodynamics
- Aluminum Alloys Composites Properties
- Superconducting Materials and Applications
- Physics of Superconductivity and Magnetism
University of Manchester
2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2004-2016
Direction des énergies
1975-2016
CEA Paris-Saclay
1982-2011
École Polytechnique
1994-2004
Centre National de la Recherche Scientifique
1996-2004
Laboratoire Mécanique des Solides
1997-1999
Until now experiments have failed to show that latent tracks can be formed in metallic crystals. For the first time, discontinuous been observed crystalline Ni-Zr alloys irradiated by GeV heavy ions. It is shown their formation results from very high value of energy deposited electronic excitations.
The problem of the amorphization mechanism crystalline materials under energetic irradiation has remained a puzzling one. We show how recent investigations on electron metallic compounds give key to this puzzle through role point defects, probably mainly interstitials.
Abstract This letter shows that the displacive phase transformation from h.c.p. α-phase to hexagonal co-phase can be triggered in titanium targets an unusual way during swift heavy ion irradiations. unexpected result is a consequence of high level energy deposition electronic excitation. A model based on Coulomb explosion mechanism account for such transformation.
It is now well known that during high-energy heavy-ion irradiation, the very deposition in electronic excitation induces a spectacular damage creation some types of metallic targets. A selected number pure metals has been irradiated by GeV ions order to test possible criteria which might be pertinent explain such effects: electron-phonon interaction, electrical conductivity, existence various allotropic phases,.... The present results show latter criterion or more precisely displacive...
By combining density functional theory, empirical potential, and atomic transport model approaches, we investigate the energetics diffusion properties of P interstitials in dilute $\mathrm{Fe}\text{\ensuremath{-}}\mathrm{P}$ alloys. Although is a substitutional impurity $\ensuremath{\alpha}$-iron, when self-interstitial atom (SIA) approaches P, becomes interstitial with an energy gain up to $1.0\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$. The octahedral $⟨110⟩$ mixed dumbbell are lowest-energy...