Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published August 2009 | public
Journal Article

Insight into the deformation behavior of niobium single crystals under uniaxial compression and tension at the nanoscale

Abstract

Size-dependent deformation behavior of niobium single-crystalline samples 200–900 nm in diameter is investigated by in situ compression and tension testing. Stress–strain curves in compression show discrete plastic flow associated with dislocation escapes at the surface. In tension, plastic flow is more continuous with pronounced strain hardening, and fracture occurs at the low true strain of ~3%. Transmission electron microscopy analysis of the same 100 nm nanopillar before and after deformation provides insights into dislocation activity during compression deformation.

Additional Information

© 2009 Acta Materialia Inc. Published by Elsevier Ltd. Received 27 February 2009; accepted 4 April 2009. Available online 12 April 2009.

Additional details

Created:
August 21, 2023
Modified:
October 20, 2023