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Brief Communications

Most dangerous slip direction in face-centered cubic silver crystals under $\langle1\bar21\rangle$ shear deformation

S. N. Bedarev, D. D. Ruder

Altai State University, Barnaul

Abstract: Using computer simulation, the failure mechanism of an fcc silver crystal under (111) $\langle1\bar21\rangle$ shear deformation is studied and the direction of unstable atomic displacement under the conditions of dynamic stability violation is determined. It is shown that the most dangerous direction of atomic motion, which makes the crystal structurally unstable, does not completely coincide with the $\langle1\bar21\rangle$ direction lying in the (111) plane and has a component normal to the [111] direction.

Received: 10.08.2009

 English version: Technical Physics, 2010, 55:3, 428–430

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