Results 11 to 20 of about 87,277 (311)

Investigation of the Heat Treatment Process and Formation Mechanism of Grain Boundary Serration for GH4795 Superalloy

open access: yesMetals, 2022
Heat treatments, including solution treatment and isothermal heat treatment, were conducted to investigate the grain boundary serration of GH4975 superalloy.
Shuo Huang   +5 more
doaj   +1 more source

The Effect of B on the Co-Segregation of C-Cr at Grain Boundaries in Austenitic Steels

open access: yesMetals, 2023
In austenitic steels, the co-segregation of C and Cr at grain boundaries can result in the formation of Cr23C6. However, the addition of B to steels can effectively reduce the amount of Cr23C6 formed and inhibit its ripening in experiments ...
Xin Yan   +5 more
doaj   +1 more source

Palladium Membrane with High Density of Large-Angle Grain Boundaries to Promote Hydrogen Diffusivity

open access: yesMembranes, 2022
A higher density of large-angle grain boundaries in palladium membranes promotes hydrogen diffusion whereas small-angle grain boundaries suppress it. In this paper, the microstructure formation in 10 µm thick palladium membranes is tuned to achieve a ...
Efi Hadjixenophontos   +8 more
doaj   +1 more source

Radiation induced grain boundary segregation in ferritic/martensitic steels

open access: yesNuclear Engineering and Technology, 2020
The radiation induced segregation of Cr at grain boundaries (GBs) in Ferritic/Martensitic steels was modeled assuming vacancy and interstitialcy diffusion mechanisms.
L.D. Xia   +6 more
doaj   +1 more source

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

Segregation sequence of phosphorus and its effect on impact toughness of GH984G alloy during thermal exposure

open access: yesJournal of Materials Research and Technology, 2022
The segregation sequence of phosphorus and the influence on impact toughness of GH984G alloy, for the application of advanced ultra-super critical (A-USC) power plant, were studied during long-term thermal exposure at 700 °C.
Yunsheng Wu   +4 more
doaj   +1 more source

Electronic transport through ordered and disordered graphene grain boundaries [PDF]

open access: yes, 2013
The evolution of electronic wave packets (WPs) through grain boundaries (GBs) of various structures in graphene was investigated by the numerical solution of the time-dependent Schrödinger equation. WPs were injected from a simulated STM tip placed above
Kim, Yong-Sung   +12 more
core   +1 more source

2D materials for conducting holes from grain boundaries in perovskite solar cells

open access: yesLight: Science & Applications, 2021
Grain boundaries in organic–inorganic halide perovskite solar cells (PSCs) have been found to be detrimental to the photovoltaic performance of devices.
Peng You   +12 more
doaj   +1 more source

Grain boundary dislocations in plane matching grain boundaries [PDF]

open access: yesPhysica Status Solidi (a), 1979
Plane matching (PM) boundaries are defined as boundaries in which a single stack of planes of indices (hkl) in each crystal adjoining the boundary is either parallel, or nearly parallel, and where no other significant lattice matching exists. A search was made (by transmission electron microscopy) for possible intrinsic secondary grain boundary ...
Schindler, R.   +2 more
openaire   +3 more sources

Metavalent bonding impacts charge carrier transport across grain boundaries

open access: yesNano Research Energy, 2023
Understanding the mechanisms underpinning the charge carrier scattering at grain boundaries is crucial to design thermoelectrics and other electronic materials.
Yuan Yu, Matthias Wuttig
doaj   +1 more source

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