Results 21 to 30 of about 39,878 (262)

Grain-boundary topological superconductor

open access: yesCommunications Physics, 2023
Majorana zero modes (MZMs) are of central importance for modern condensed matter physics and quantum information due to their non-Abelian nature, which thereby offers the possibility of realizing topological quantum bits.
Morten Amundsen, Vladimir Juričić
doaj   +1 more source

Grain boundaries [PDF]

open access: yes, 1991
The present document is a progress report describing the work accomplished to date during the second year of our four-year grant (February 15, 1990--February 14, 1994) to study grain boundaries. The research was focused on the following three major efforts: Study of the atomic structure of grain boundaries by means of x-ray diffraction, transmission ...
Balluffi, R.W., Bristowe, P.D.
openaire   +2 more sources

Effect of serrated grain boundary on stress corrosion cracking of Alloy 600

open access: yesNuclear Engineering and Technology, 2018
The effect of a serrated grain boundary on stress corrosion cracking (SCC) of Alloy 600 was investigated in terms of improvement of SCC resistance. Serrated grain boundaries and straight grain boundaries were obtained by controlled heat treatment.
H.P. Kim   +5 more
doaj   +1 more source

Grain boundary carbides as hydrogen diffusion barrier in a Fe-Ni alloy: A thermal desorption and modelling study

open access: yesMaterials & Design, 2018
A significant decrease in hydrogen absorption in the presence of grain boundary carbides compared to the carbide-free microstructure in the Ni-based HR6W alloy was measured by thermal desorption analysis (TDA).
Andrej Turk   +5 more
doaj   +1 more source

Grain boundary roughening transitions [PDF]

open access: yesEPL (Europhysics Letters), 2009
We consider the roughening of small angle grain boundaries consisting of arrays of dislocations and found two transitions, corresponding to fluctuations of the dislocations along and perpendicular to the boundaries. The latter contributes to a large scale fluctuation of the orientation of the crystal but the former does not. The transition temperatures
openaire   +2 more sources

Interface character distributions in WC/Co cemented carbide

open access: yesCailiao gongcheng
Electron backscatter diffraction, five parameter analysis, overlap-pole-figure analysis and near coincident site analysis were used to investigate the interface character distributions of WC/WC grain boundaries and WC/Co phase boundaries in WC/Co ...
YU Shunshi   +8 more
doaj   +1 more source

Atomistic Simulation Study of Grain Boundary Segregation and Grain Boundary Migration in Ni-Cr Alloys

open access: yesMetals
Using Molecular Dynamics (MD) and Monte Carlo (MC) simulations, we studied the grain boundary (GB) segregation under different temperatures and Cr concentrations in Ni-Cr alloys with two distinct grain-boundary structures, i.e., Σ5(310)[010] and Σ101(200)
Pengwei Huang   +4 more
doaj   +1 more source

Molecular Dynamics Calculations of Grain Boundary Mobility in CdTe

open access: yesNanomaterials, 2019
Molecular dynamics (MD) simulations have been applied to study mobilities of Σ3, Σ7 and Σ11 grain boundaries in CdTe. First, an existing MD approach to drive the motion of grain boundaries in face-centered-cubic and body-centered-cubic ...
Rodolfo Aguirre   +3 more
doaj   +1 more source

Effect of Grain Size on Grain Boundary Segregation Thermodynamics of Phosphorus in Interstitial-Free and 2.25Cr-1Mo Steels

open access: yesMetals, 2017
Several grain sizes were obtained by heat treatment at different temperatures for interstitial-free (IF) and 2.25Cr-1Mo steels. Samples of the steels with different grain sizes were aged at 600 and 680 °C for IF steel and 520 and 560 °C for 2.25Cr-1Mo ...
Yu Zhao, Shenhua Song, Hong Si, Kai Wang
doaj   +1 more source

Analytical Modeling and Computer Simulation of the Transformation of Ellipsoids Nucleated on Random Parallel Planes [PDF]

open access: yesMaterials Research, 2020
A considerable number of engineering materials is polycrystalline. Cahn proposed analytical expressions for transformations nucleated at the grain faces, triple junctions, and quadruple junctions.
Gabriella Maria Silveira de Sá   +4 more
doaj   +1 more source

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