[PDF][PDF] Resolving the Contribution of Interfaces in the Deformation of Nanocrystalline Copper with Atomistic Simulations.
2012•osti.gov
… ➢ Continuum metrics were introduced and computed to render competing deformation
processes for NC materials and to quantify relative contribution to ensemble strain. ➢ GB
structure is important in considering interfacial plasticity ➢ The distribution of deformation
mechanisms in NC metals can be estimated using the derived metrics. ➢ The contribution of
various mechanisms to the overall strain in the NC system can be resolved using Green strain.
➢ Quantitative evidence for the transition to GB-mediated plasticity in NC metals is provided. …
processes for NC materials and to quantify relative contribution to ensemble strain. ➢ GB
structure is important in considering interfacial plasticity ➢ The distribution of deformation
mechanisms in NC metals can be estimated using the derived metrics. ➢ The contribution of
various mechanisms to the overall strain in the NC system can be resolved using Green strain.
➢ Quantitative evidence for the transition to GB-mediated plasticity in NC metals is provided. …
Results
• Microscale kinematic metric formulation• GB structure and deformation• Dislocation nucleation• GB sliding/migration• NC deformation• Non-local behavior (deformation/rotation fields)• Resolving the strain contribution of mechanisms
osti.gov
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