Results 51 to 60 of about 203,967 (191)

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  

INCREASE IN GRAIN BOUNDARY CONDUCTIVITY OF Li1+xAlxSn2-x(PO₄)₃ BY MIXING POWDERS PRETREATED AT DIFFERENT TEMPERATURES

open access: yesCeramics-Silikáty, 2016
The overall conductivity of crystalline lithium ion conductors is generally low due to the large grain boundary resistance. In order to improve the grain boundary conductivity, NASICON structured Li1+xAlxSn2-x(PO₄)₃ has been studied in this paper ...
Xiaojuan Lu, Huining Xiao
doaj   +1 more source

Direct observation of nm-scale Mg- and B-oxide phases at grain boundaries in MgB2 [PDF]

open access: yes, 2001
Here we describe the results of an atomic resolution study of the structure and composition of both the interior of the grains, and the grain boundaries in polycrystalline MgB2. We find that there is no oxygen within the bulk of the grains but significant oxygen enrichment at the grain boundaries.
arxiv   +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  

Effect of grain boundary character on nucleation of intergranular fatigue cracks in SUS430 ferritic stainless steel

open access: yesNihon Kikai Gakkai ronbunshu, 2017
The effect of grain boundary character and grain boundary geometrical configuration on nucleation of intergranular fatigue crack in SUS430 ferritic stainless steel was quantitatively investigated to reveal the elementary process of high cycle fatigue ...
Weitao YANG   +2 more
doaj   +1 more source

Kinetics of Grain Boundary Networks Controlled by Triple Junction and Grain Boundary Mobility

open access: yesMetals, 2018
The kinetics of a triple junction of grain boundaries with distinct specific energies and mobilities and a finite mobility of the triple junction is investigated.
Ernst Gamsjäger   +2 more
doaj   +1 more source

Molecular dynamics simulations of nanoindentation and scratch in Cu grain boundaries

open access: yesBeilstein Journal of Nanotechnology, 2017
The dynamic nanomechanical characteristics of Cu films with different grain boundaries under nanoindentation and scratch conditions were studied by molecular dynamics (MD) simulations.
Shih-Wei Liang   +2 more
doaj   +1 more source

Essential structural and experimental descriptors for bulk and grain boundary conductivities of Li solid electrolytes

open access: yesScience and Technology of Advanced Materials, 2020
We present a computational approach for identifying the important descriptors of the ionic conductivities of lithium solid electrolytes. Our approach discriminates the factors of both bulk and grain boundary conductivities, which have been rarely ...
Yen-Ju Wu   +8 more
doaj   +1 more source

Continuation and Bifurcation of Grain Boundaries in the Swift-Hohenberg Equation [PDF]

open access: yesarXiv, 2016
We study grain boundaries between striped phases in the prototypical Swift-Hohenberg equation. We propose an analytical and numerical far-field-core decomposition that allows us to study existence and bifurcations of grain boundaries analytically and numerically using continuation techniques.
arxiv  

Effects of anisotropy field dispersion and grain boundary on coercivity and squareness ratio for HDDR-processed NdFeB powders

open access: yesAIP Advances, 2018
In this study, we simulated the effects of the anisotropy field (Hk) dispersion of the grains (the main phases and the deterioration layers) for a NdFeB magnetic powder on Hc and squareness ratio in consideration of the magnetic properties of the grain ...
Fumiko Akagi, Yoshitake Ishii
doaj   +1 more source

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