Record number :
2156304
Title of article :
Dislocation motion-induced strain in nanocrystalline materials: Overlooked considerations
Author/Authors :
Carlton، نويسنده , , C.E. and Ferreira، نويسنده , , P.J.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
3
From page :
672
To page :
674
Abstract :
The amount of plastic strain caused by the motion of a single dislocation across an individual nanosize grain is drastically higher than the amount recorded for larger grain sizes. As a result, in nanocrystalline materials, only a small number of dislocations would need to move within each individual grain in order to accommodate the plastic strain on the entire sample. This observation leads to a quantitative criterion for determining if observed dislocation activity is sufficient to accommodate realistic applied plastic strains. This new criterion is directly applicable to the interpretation of in situ TEM experiments and computational molecular dynamics simulations.
Keywords :
mechanical properties , Dislocation motion , Nanocrystalline materials
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Serial Year :
2008
Link To Document :
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