Results 21 to 30 of about 419,468 (275)
An understanding of hydrogen embrittlement in nickel grain boundaries from first principles
Materials & Design, 2021 Here, the segregation and accumulation of hydrogen in Ni grain boundaries, and its effects on cohesion and tensile mechanical strength were studied by means of density functional theory simulations. Three model grain boundaries were considered: the Σ3(11¯
Han Lin Mai +4 more
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Effects of austenitization temperature on the microstructure of 15BCr30 and PL22 boron steels [PDF]
Materials Research, 2013 This paper studies boron precipitation and segregation at austenitic grain boundaries for low carbon boron steels types: PL22 and 15BCr30. The following parameters were evaluated: percentage of martensite/bainite, size and nucleation sites of austenitic ...
C. A. Suski, C.A.S de Oliveira
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Grain Boundary Shear Coupling is Not a Grain Boundary Property [PDF]
SSRN Electronic Journal, 2018 Shear coupling implies that all grain boundary (GB) migration necessarily creates mechanical stresses/strains and is a key component to the evolution of all polycrystalline microstructures. We present MD simulation data and theoretical analyses that demonstrate the GB shear coupling is not an intrinsic GB property, but rather strongly depends on the ...
Kongtao Chen +3 more
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Phonon Transmission Across Silicon Grain Boundaries by Atomistic Green's Function Method
Frontiers in Physics, 2019 Nanostructured materials are of great interest for many applications because of their special properties. Understanding the effect of grain boundaries on phonon transport in polycrystals is important for engineering nanomaterials with desired thermal ...
Chen Li, Zhiting Tian
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, 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.
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Pipe and grain boundary diffusion of He in UO₂ [PDF]
, 2016 Molecular dynamics simulations have been conducted to study the effects of dislocations and grain boundaries on He diffusion in UO2. Calculations were carried out for the {100}, {110} and {111} h110i edge dislocations, the screw h110i dislocation and Σ5,
Andersson, DA +5 more
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Metals, 2019 Among equiatomic alloys of the Cr-Mn-Fe-Co-Ni system, MnFeNi was shown to exhibit a strong anti-invar behavior but little is known regarding its mechanical properties. The objective of the present study is to investigate Hall–Petch strengthening by
Mike Schneider +4 more
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Diffraction and near-zero transmission of flexural phonons at graphene grain boundaries [PDF]
, 2015 Graphene grain boundaries are known to affect phonon transport and thermal conductivity, suggesting that they may be used to engineer the phononic properties of graphene.
Helgee, Edit E., Isacsson, Andreas
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The role of grain boundaries in solid-state Li-metal batteries
Materials Futures, 2022 Despite the potential advantages promised by solid-state batteries, the success of solid-state electrolytes has not yet been fully realised. This is due in part to the lower ionic conductivity of solid electrolytes.
Emily Milan, Mauro Pasta
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Heliyon, 2022 Due to limited basal slips, the recrystallization of Mg–Zn-Nd-Zr alloys originated at grain boundaries with large orientation gradient based on strain-induced-boundary-migration nucleation mechanism. The primary driving force of the recrystallization was
Fanxiao Kong +6 more
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