Article ID Journal Published Year Pages File Type
1501848 Scripta Materialia 2009 4 Pages PDF
Abstract

Molecular dynamics simulations are used to investigate orientation and rate dependence of partial dislocation nucleation in Cu. As the strain rate is reduced from 109 to 107 s−1, the tensile stress required for homogeneous dislocation nucleation is reduced by at most 5%. Furthermore, mild orientation sensitivity is observed in the rate dependence of the critical tensile stress. The computed resolved shear stress for partial dislocation nucleation is consistent with previous ab initio calculations of the theoretical shear strength of Cu.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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