Kim, Ju-Young and Jang, Dongchan and Greer, Julia R. (2009) Insight into the deformation behavior of niobium single crystals under uniaxial compression and tension at the nanoscale. Scripta Materialia, 61 (3). pp. 300-303. ISSN 1359-6462 http://resolver.caltech.edu/CaltechAUTHORS:20101209-105858696
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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.|
|Subject Keywords:||Tension test; Compression test; Plastic deformation; Nanoscale; TEM|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||11 Dec 2010 00:39|
|Last Modified:||26 Dec 2012 12:44|
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