Scale dependence of mechanical properties of single crystals under uniform deformation Academic Article

abstract

• Mechanism-based discrete dislocation plasticity is used to investigate the effect of size on micro-scale crystal plasticity under nominally uniform compression. Constitutive rules are used which include a physical representation of dislocation sources and obstacles in the undeformed samples. The simulations predict a strong size dependence of the material flow stress and reproduce the main features of recent experiments. Possible operating mechanisms are identified which highlight the interplay between sample dimensions, internal stresses and the length and time scales inherent to dislocation generation and motion. 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

authors

• Benzerga, Amine

published proceedings

• SCRIPTA MATERIALIA

author list (cited authors)

• Benzerga, A. A., & Shaver, N. F.

citation count

• 76

complete list of authors

• Benzerga, AA||Shaver, NF

publication date

• June 2006

publisher

• Elsevier  Publisher

published in

• Scripta Materialia  Journal

keywords

• Dislocations
• Mechanical Properties-yield Phenomena
• Strain-gradient Plasticity
• Theory And Modeling

Digital Object Identifier (DOI)

• 10.1016/j.scriptamat.2006.02.003

start page

• 1937

end page

• 1941

volume

• 54

issue

• 11

URL

• http://dx.doi.org/10.1016/j.scriptamat.2006.02.003