Results 271 to 280 of about 87,482 (311)

On the chemistry of grain boundary segregation and grain boundary fracture

Metallurgical Transactions A, 1990
This paper considers the problem of impurity segregation in metals and the effect of these impurities on grain boundary cohesion. The primary goal of this paper is to provide a physical model that will allow us to think about these two processes. We describe both of them in chemical terms.
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The Elimination of Grains and Grain Boundaries in Grain Growth

Interface Science, 1997
The topological changes that occur during coarsening of 2D and 3Dcellular structures, such as polycrystals, areinvestigated. Particular attention is given to the elimination ofgrain boundaries and grains with more than the minimum number oftopological elements.
A.C. Ferro, M.A. Fortes
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The Role of Grain Boundary Curvature in Diffusional Deformation: Control of Grain Boundary Sliding by Grain Boundary Mobility

SSRN Electronic Journal, 2020
The diffusion processes involved in the accommodation of grain boundary sliding in diffusional deformation are revisited by considering the role of grain boundary curvature and of the associated grain boundary migration. A method is developed for calculating grain boundary profiles, diffusional fluxes, and the dissipation power arising from the ...
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The Role of Σ9 Boundaries in Grain Boundary Engineering

Metallurgical and Materials Transactions A, 2010
In a grain-boundary-engineered (GBE) microstructure, Σ9 boundaries are the second most abundant boundary type. This article presents data showing that, in GBE copper, most Σ9s were special. Σ9 boundaries are also a geometrically necessary component of a GBE microstructure.
V. Randle, M. Coleman, M. Waterton
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Grains, grain boundaries and interfaces

2004
The topic of grains and grain houndaries is extremely vast and covers many different concepts, involving not only the associated microstructural features, hut also the effects on material characteristics such as corrosion resistance and mechanical properties.
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Boundary conditions at grain boundaries

Journal of Applied Physics, 1983
Grain boundaries in polycrystalline semiconductor material are frequently idealized as surfaces possessing a characteristic surface recombination velocity. Minority carrier densities generated by external sources (electron beams, light, etc.) in polycrystalline p–n junctions must satisfy certain boundary conditions at these grain boundaries which will ...
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A theory of grain boundaries that accounts automatically for grain misorientation and grain-boundary orientation

Journal of the Mechanics and Physics of Solids, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Hyperbolic grain boundaries

Physical Review B, 1987
, Tu, , Smith, , Weiss
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The differential geometry of grain boundaries: tilt boundaries

Acta Crystallographica Section A, 1976
The dislocation structure of a pure twist boundary is analyzed utilizing the techniques of differential geometry. Such basic tensor quantities as the metric, strain, dislocation density, Burgers vector, and distortion are all defined with respect to such boundaries and related to each of the individual grains comprising the boundary as well as to a ...
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Grain Boundary Diffusion and Grain Boundary Segregation

1998
B. Bokstein, N. Balandina
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