Journal
APPLIED PHYSICS LETTERS
Volume 106, Issue 6, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.4907773
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Funding
- U.S. Department of Energy, Office of the Basic Energy Sciences
- NASA's Space Technology Research Grant Programs through JRG's Early Career grant
- Kavli Nanoscience Institute (KNI) at Caltech
- Department of Energy National Nuclear Security Administration PSAAP project at Caltech [DE-FC52-08NA28613]
- National Science Foundation Graduate Research Fellowship [DGE-1144469]
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In-situ nano-tensile experiments on 70 nm-diameter free-standing electroplated NiP metallic glass nanostructures reveal tensile true strains of similar to 18%, an amount comparable to compositionally identical 100 nm-diameter focused ion beam samples and similar to 3 times greater than 100 nm-diameter electroplated samples. Simultaneous in-situ observations and stress-strain data during post-elastic deformation reveal necking and work hardening, features uncharacteristic for metallic glasses. The evolution of free volume within molecular dynamics-simulated samples suggests a free surface-mediated relaxation mechanism in nano-sized metallic glasses. (C) 2015 AIP Publishing LLC.
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