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Viscous grain-boundary sliding with rotating particles or grains
Acta Materialia, 2009We evaluate the sliding rate and stress distribution on the boundary when the sliding of grain boundary containing particles is accommodated by grain-boundary diffusion, by taking the particle rotation and the intrinsic boundary viscosity into account. The particle rotation enhances the sliding rate, and can occur in the reverse direction with respect ...
Byung-Nam Kim +4 more
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Grain Boundary Sliding in Alumina Bicrystals
1966A technique has been developed for forming bicrystals of alumina with controlled grain boundary orientation by pressure-sintering in vacuo. Bicrystals with tilt misorientations prepared by this technique have been tested in compressive shear and the stress-strain relationship determined. Bicrystal fracture strengths at several temperatures are reported.
M. P. Davis, Hayne Palmour
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Reexamination of grain-boundary sliding by diffusion
Metallurgical Transactions A, 1986Steady-state sliding of grain boundaries is discussed by taking into account the change in the potential energy of an applied stress, when the sliding occurs by diffusional accommodation. The present analysis enables us to derive the sliding rates at boundaries of various shapes in a simple manner without knowing local stress fields.
S. Onaka, M. Kato, T. Mori
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Grain Boundary Sliding in Bicrystals of Tin
physica status solidi (b), 1965AbstractBicrystals of tin were tested in shear over a range of stresses and temperatures near the melting‐point. Boundary sliding occurred initially at a constant rate, followed by a period of steadily decreasing rate until movement almost ceased; the initial rate data fell into two clearly defined groups.
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Grain boundary sliding and diffusion creep
Surface Science, 1972Abstract The theory of diffusion creep is reviewed. It is shown that if a polycrystalline material is to deform in a coherent manner without the development of voids, grain boundary sliding is necessary as well as relative motion normal to the boundaries by diffusion. Coherent deformation requires that the ratio of the sliding velocity and the normal
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Grain‐Boundary Sliding in Ceramics
Journal of the American Ceramic Society, 1972openaire +1 more source