Ductility and work hardening in nano-sized metallic glasses
D. Z. Chen, X. W. Gu, Qi An, William A. Goddard III, J. R. Greer
2015Applied Physics Letters, 106(6), Art. No. 06190341cited
Abstract
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.
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Cite this publication
Chen, D. Z., Gu, X. W., An, Q., III, W. A. G., & Greer, J. R. (2015). Ductility and work hardening in nano-sized metallic glasses. *Applied Physics Letters*, *106*(6), Art. No. 061903. https://doi.org/10.1063/1.4907773