Results 41 to 50 of about 32,621 (292)

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

On gradient field theories: gradient magnetostatics and gradient elasticity

, 2014
In this work the fundamentals of gradient field theories are presented and reviewed. In particular, the theories of gradient magnetostatics and gradient elasticity are investigated and compared.
Lazar, Markus
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

Toy nanoindentation model and incipient plasticity

, 2009
A toy model of two dimensional nanoindentation in finite crystals is proposed. The crystal is described by periodized discrete elasticity whereas the indenter is a rigid strain field of triangular shape representing a hard knife-like indenter.
A. Carpio, Amit, Asenjo, Bulatov, Carpio, Carpio, Carpio, Carpio, Cui, de la Fuente, Gerde, Greer, Hirth, Hull, I. Plans, Iooss, Kelchner, Kessler, L.L. Bonilla, Landau, Landau, Lorenz, Marder, Navarro, Pla, Plans, Rubinstein, Schall, Shan, Slepyan, Zhen, Zhu   +31 more
core   +1 more source

Climb kinetics of dislocation loops in aluminium

Philosophical Magazine, 1968
Abstract The annealing kinetics of dislocation loops in quenched aluminium has been studied using transmission electron microscopy techniques. An influence of the vicinity of the foil surface on the rate of climb was confirmed. The apparent activation energy for climb of faulted loops was found to be 1·18 ± 0·02 ev and the pre-exponential factor, (7 ...
Tartour, Jean-Pierre, Washburn, Jack
openaire   +2 more sources

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

DISLOCATION DIPOLES AND DISLOCATION LOOPS

Le Journal de Physique Colloques, 1966
Basic theoretical ideas on the properties of two special dislocation configurations, dislocation dipoles and prismatic dislocation loops, are presented. Some of the author's recent results, based mostly on the application of the model of elastic continuum on these crystalline defects, are also given.
openaire   +2 more sources

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +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