RT2. Fundamental Physics of Defect Interactions During Deformation

In this research thrust, the focus is on obtaining quantitative measurements of the strengths of dislocation-defect interactions, the local stress fields and rotations around dislocation pileups and arrays, and the local stresses driving fundamental dislocation processes.

Focus

Unit Defect Interactions During Deformation

• Direct spatially-resolved characterization of defect interaction strengths
  • 3D x-ray microscopy
  • Electron holography, Convergent-beam electron microscopy
• Indirect defect-interaction measurements with well-defined geometries

Controlled introduction and motion of defects and defect-interaction simulations