Results 31 to 40 of about 32,379 (293)

Effect of temperature, pressure, crystal defect types, and densities on the mechanical behavior of tungsten under tensile deformation: A molecular dynamics simulation study

Nuclear Materials and Energy, 2023
The mechanical behavior of tungsten under tensile deformation was investigated using molecular dynamics simulations, with a focus on the effects of temperature, pressure, crystal defect types, and densities.
A. Alivaliollahi, Gh. Alahyarizadeh, A. Minuchehr   +2 more
doaj   +1 more source

Atomistic Simulations of Basal Dislocations Interacting with Mg$_{17}$Al$_{12}$ Precipitates in Mg [PDF]

, 2019
The mechanical properties of Mg-Al alloys are greatly influenced by the complex intermetallic phase Mg$_{17}$Al$_{12}$, which is the most dominant precipitate found in this alloy system.
Bitzek, Erik, Guénolé, Julien, Korte-Kerzel, Sandra, Prakash, Aruna, Vaid, Aviral   +4 more
core   +1 more source

Dislocation Emission around Nanoindentations on a (001) fcc Metal Surface Studied by STM and Atomistic Simulations

, 2002
We present a combined study by Scanning Tunneling Microscopy and atomistic simulations of the emission of dissociated dislocation loops by nanoindentation on a (001) fcc surface.
E. B. Tadmor, J. A. Zimmerman, J. A. Zimmerman, J. C. Hamilton, J. de la Figuera, J. M. Rojo, J. P. Hirth, M. A. González, O. Rodríguez de la Fuente, O. Rodríguez de la Fuente, P. B. Hirsch, Ross C. Thomas, S. G. Corcoran, U. Landman, Woei Wu Pai   +14 more
core   +1 more source

Optimisation of the parameters of an extended defect model applied to non-amorphizing implants [PDF]

, 2005
In this paper, we present the optimisation of the parameters of a physical model of the kinetics of extended defects and applied the model with the optimised parameters to non-amorphizing implants.
Connétable, Damien, Cristiano, F., Lampin, E., Lamrani, Youness   +3 more
core   +4 more sources

Proton and Au-ion irradiation induced damage and hardening in ferritic/martensitic steel

Nuclear Materials and Energy, 2021
Ferritic/martensitic (F/M) steel was irradiated by proton and Au-ion at 400 °C to investigate the irradiation damage and hardening behavior. For the samples irradiated by proton, dislocation loops and dislocation lines were found in F/M steels and the ...
Ke Shi, Wei Zhang, Zhien Ning, Hui Wang, Jiali Liao, Yuanyou Yang, Ning Liu, Jijun Yang   +7 more
doaj   +1 more source

Stability of Elastic Glass Phases in Random Field XY Magnets and Vortex Lattices in Type II Superconductors

, 1996
A description of a dislocation-free elastic glass phase in terms of domain walls is developed and used as the basis of a renormalization group analysis of the energetics of dislocation loops added to the system.
A. I. Larkin, D. S. Fisher, D. S. Fisher, D. S. Fisher, Daniel S. Fisher, G. Blatter, J. Kierfeld, J. Villain, M. Aizenman, M. C. Marchetti, M. J. P. Gingras, T. Giamarchi, T. Hwa, T. Natterman, Y. Imry   +14 more
core   +1 more source

Investigation of Interactions between Dislocation and Dislocation Loops in Fe33Ni33Cr Alloy by Molecular Dynamics Simulation

Yuanzineng kexue jishu
The FeNiCr alloys hold application potential in advanced reactors, however, irradiation hardening severely impacts their safety during service. To further enhance the irradiation hardening theory of the FeNiCr alloys, the interaction mechanism between 1/
LONG Kaihong, WANG Dongjie, HUANG Chutian, JIA Lixia, HE Xinfu, DOU Yankun
doaj   +1 more source

Dislocation Dynamics Model to Simulate Motion of Dislocation Loops in Metallic Materials

Metals, 2022
Dislocation dynamics has been an intensive research subject in materials science and engineering due to the significant roles it plays in plastic deformation and the hardening of metals, fracture mechanics, and the fabrication of semiconductor thin films.
Xinze Tan, Enhui Tan, Lizhi Sun
doaj   +1 more source

Simplification of selective imaging of dislocation loops: diffraction-selected on-zone STEM

Philosophical Magazine Letters
Contrary to the conventional belief that, in transmission electron microscopy (TEM), selective and sharp imaging of dislocation loops can be realized only by accurate tilting of a specimen from the condition that the symmetrical axis of incident electron
Masaya Kozuka, Yuichi Miyahara, Tomohiro Kobayashi   +2 more
doaj   +1 more source

The influence of the dislocation distribution heterogeneity degree on the formation of a non-misoriented dislocation cell substructures in f.c.c. metals [PDF]

, 2004
Dislocation loops emitted by Frank-Reed source during crossing dislocations of the non-coplanar slip systems are accumulates jogs on the own dislocation line, resulting in the deceleration of the segments of dislocation loops with high jog density.
D N Cherepanov, O V Selivanikova, M V Matveev, Howie A, Malygin G.A., Murr L.E., Tabata T., Chow C.K., Kocanda S   +8 more
core   +1 more source