Results 71 to 80 of about 203,967 (191)

Electronic states and self-doping at a 45^o YBa2Cu3O7 grain boundary [PDF]

open access: yesarXiv, 2009
The charge redistribution at grain boundaries determines the applicability of high-Tc superconductors in electronic devices, because the transport across the grains can be hindered considerably. We investigate the local charge transfer and the modification of the electronic states in the vicinity of the grain-grain interface by first principles ...
arxiv  

Intergranular corrosion in AA5083 alloy: The influence of grain boundary segregation and its detection via TEM

open access: yesJournal of Materials Research and Technology
The influence of grain boundary segregation on corrosion behaviour of AA5083 alloy remains unclear. In the present work, the segregation in both as-received and sensitized AA5083 alloys was examined via transmission electron microscopy (TEM).
Xiangzhe Meng   +5 more
doaj  

Computed entropy spectra for grain boundary segregation in polycrystals

open access: yesnpj Computational Materials
Grain boundary solute segregation influences most bulk material properties, and understanding solute thermodynamics at grain boundaries is critical for engineering them.
Nutth Tuchinda, Christopher A. Schuh
doaj   +1 more source

Probing the impact of grain interior and grain boundaries on the mechanical behavior of a high-Mn austenitic steel

open access: yesJournal of Materials Research and Technology, 2022
We elucidate here the grain orientation/grain boundary dependence on the deformation behavior of high-Mn steel via tensile tests. The ultra-fine grained/fine grained (UFG/FG) specimen was characterized by superior strength-ductility combination as ...
Chengyang Hu   +7 more
doaj  

Formation of grains and dislocation structure of geometrically necessary boundaries [PDF]

open access: yesarXiv, 2015
A continuum dislocation model of formation of grains whose boundaries have a non-vanishing thickness is proposed. For a single crystal deforming in simple shear the lamellar structure of grains with thin layers containing dislocations as the geometrically necessary boundaries turns out to be energetically preferable.
arxiv  

Automatic kinetic Monte-Carlo modeling for impurity atom diffusion in grain boundary structure of tungsten material

open access: yesNuclear Materials and Energy, 2017
The diffusion process of hydrogen and helium in plasma-facing material depends on the grain boundary structures. Whether a grain boundary accelerates or limits the diffusion speed of these impurity atoms is not well understood.
Atsushi M. Ito   +3 more
doaj  

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