nl5b01034_si_014.pdf (189.33 kB)
Size Effect Suppresses Brittle Failure in Hollow Cu60Zr40 Metallic Glass Nanolattices Deformed at Cryogenic Temperatures
journal contribution
posted on 2015-09-09, 00:00 authored by Seok-Woo Lee, Mehdi Jafary-Zadeh, David Z. Chen, Yong-Wei Zhang, Julia R. GreerTo
harness “smaller is more ductile” behavior emergent
at nanoscale and to proliferate it onto materials with macroscale
dimensions, we produced hollow-tube Cu60Zr40 metallic glass nanolattices with the layer thicknesses of 120, 60,
and 20 nm. They exhibit unique transitions in deformation mode with
tube-wall thickness and temperature. Molecular dynamics simulations
and analytical models were used to interpret these unique transitions
in terms of size effects on the plasticity of metallic glasses and
elastic instability.
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exhibitlayer thicknessesglass nanolatticesharnesssize effects20 nmmacroscale dimensionsplasticityHollow Cu 60Zr Metallic Glass Nanolattices DeformednanoscaleductileMolecular dynamics simulationsSize Effect Suppresses Brittle Failurematerialdeformation modeCryogenictermtransitioninstabilitymodelTemperaturesTo