Publication
Molecular dynamics simulations of phase formation and stability in the Al(Ni) system under irradiation
Related publications (32)
Ion implantation in Ni-Ti shape memory alloy thin films
The present thesis focuses on the effect of 5 MeV Ni ion irradiation on the microstructure and the thermomechanical behavior in prestrained (ε∼4%) martensitic Ti-rich NiTi thin films. At this ion energy, damage is limited to a depth of approximately 2 µm ( ...
EPFL2005SIA activity during irradiation of nanocrystalline Ni
Cascade damage simulations in a 12 nm nanocrystalline Ni sample are presented. Sinks present in the sample such as grain boundaries and vacancy defects influence the movement of self-interstitial atoms (SIAs). Two temporal mechanisms of SIA activity during ...
2003Computer simulation of displacement cascades in nanocrystalline Ni
Large-scale molecular dynamics of cascade production of the primary damage state are performed in fcc nanocrystalline Ni of average grain diameters of 5 and 12 nm. Primary knock-on atom kinetic energies of 5-30 keV are simulated. During the thermal spike p ...
2002Multiscale modeling of radiation damage: applications to damage production by GeV proton irradiation of Cu and W, and pulsed irradiation effects in Cu and Fe
The damage accumulation in Cu and W is investigated using a multiscale modeling approach. The efficiency for defect production of displacement cascades is calculated using molecular dynamics (MD). The simulation uses the recoil spectra from spallation reac ...
2001The order-disorder transformation and microstructure evolution in nickel-aluminium intermetallics after heavy-ion irradiation
Nickel-aluminium intermetallics constitute interesting systems for the study of irradiation-induced phase transformations (order → disorder, amorphization) and production of defects. Irradiation of ordered intermetallics may induce disorder or amorphizatio ...
EPFL2000Defect production and damage evolution in Al: a molecular dynamics and Monte Carlo computer simulation
Predicting microstructure evolution of metals under irradiation requires an in depth understanding of the production and properties of point defects and their clusters. Although, analytical descriptions based on the production bias model have recently been ...
1999Annealing Kinetics of Single Displacement Cascades in Ni: An Atomic Scale Computer Simulation Study
In order to describe the long term evolution of the defects produced by a displacement cascade, Molecular dynamics (MD) and Kinetic Monte Carlo (KMC) methods are employed. Using an empirical Ni interatomic potential in MD, the damage resulting from primary ...
1999Stability of Al0.75Ni0.25 amorphous zones induced by Ni ion implantation into pure aluminium
Implantation of Ni ions into pure aluminium shows the formation of amorphous zones (AZ). Measurements by energy dispersive spectrometry attribute to the amorphous zones at Ni concentration of 25 at.%. These amorphous regions are relatively stable under hea ...
1998Cascade overlap induced amorphization and disordering in irradiated intermetallics NiAl and Ni3Al: A molecular dynamic study
The kinetics of amorphization and disordering processes in NiAl and Ni3Al induced by collision cascades have been investigated by means of molecular dynamic (MD) computer simulations, It has been shown previously (Spaczer el at. [Phys. Rev. B 52, 7171 (199 ...
1997Microstructural evolution adjacent to grain boundaries under cascade damage conditions and helium production
It is well established that clusters of both vacancies and self-interstitial atoms (SIAs) are produced in displacement cascades. Ample evidence has also been presented showing that SIAs produced in the form of small dislocation loops may be highly glissile ...
1996