Industrial texture control in the production of ribbons from nonferrous metals

Khayutin, S. G.

doi:10.1007/bf01156896

Cited by 2 publications

(1 citation statement)

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“…First references to grain boundary (GB) movement as a consequence of applied mechanical loads or forced external displacements date back to the 1950's for small-angle tilt boundaries [1,2] or mainly to the 1970's or 1980's for high-angle GBs [3][4][5][6][7]. Only recently this phenomenon has started to attract much attention and to be systematically studied either through experiments [8][9][10][11][12][13], or theoretically [14] or by numerical simulations [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Plastic deformation by conservative shear-coupled migration of tilt boundaries with intergranular nano-cracks or precipitates

Luque

Aldazábal

Martı́nez-Esnaola

et al. 2010

Philosophical Magazine

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. Plastic deformation by conservative shear-coupled migration of tilt boundaries with intergranular nanocracks or precipitates. Philosophical Magazine, Taylor & Francis, 2010, 90 (27-28) We present molecular dynamics (MD) simulations of the shear-coupled migration (SCM) behaviour of symmetrical tilt boundaries perturbed by the presence of nano-cracks or nano-precipitates lying on the boundary plane. The simulations have been performed for copper bicrystals at room temperature (300 K). The tilt boundary gets pinned by the crack tip or by the precipitates; shear-coupled migration occurs only ahead of the pinning points. Bulging of the tilt boundary reduces the shear stress on the boundary surface near the pinning points. In the case of cracks the local deviation of the boundary from the crack plane close to the crack tip hinders mode II crack propagation; in fact, some crack healing is observed in some cases. The applied stress grows until depinning of the boundary takes place by SCM bulging or by the combined action of SCM with another deformation mechanism (emission of dislocations from the pinning point vicinity, grain boundary sliding).

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