MECHANICAL DEFORMATION OF NANOCRYSTALLINE MATERIALS
Center for Atomic Scale Materials Physics (CAMP) and Physics Department,
Building 307, Technical University of Denmark, DK-2800 Lyngby, Denmark.
UNI-C, Building 304, Technical University of Denmark, DK-2800, Lyngby,
Denmark and Joint Research Center for Atom Technology (JRCAT),
1-1-4 Higashi, Tsukuba, Ibaraki 305, Japan
(1) Present address: Department of Physics, Washington University,
St. Louis, Missouri 63130, USA.
Abstract
The deformation of a nanometer sized wire containing multiple grain
boundaries has been studied using molecular dynamics. We observe a
splitting of the grain boundaries, followed by the migration of the
new grain boundaries, leading to a complete transformation of the
original grains. The stress-strain curves obtained from the
simulations clearly show the effect of the grain boundaries on the
mechanical properties. These simulations show how the grain
boundaries in nanocrystalline materials may dominate the mechanical
properties.
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Last modified: May 13, 1996, email etc corrected June 2, 2003
Jakob Schiøtz,
schiotz@schiotz@fysik.dtu.dk
