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Ductility and work hardening in nano-sized metallic glasses (2015)

D. Z. Chen, X. W. Gu, Q. An, W. A. Goddard III and J. R. Greer

American Institute of Physics (AIP)

In: Applied Physics Letters

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Publication Date: 2015-02-10

Description: In-situ nano-tensile experiments on 70 nm-diameter free-standing electroplated NiP metallic glass nanostructures reveal tensile true strains of ∼18%, an amount comparable to compositionally identical 100 nm-diameter focused ion beam samples and ∼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.

Print ISSN: 0003-6951

Electronic ISSN: 1077-3118

Topics: Physics

Published by American Institute of Physics (AIP)

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