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|Title:||A transition from localized shear banding to homogeneous superplastic flow in nanoglass|
|Source:||Adibi, S., Sha, Z.-D., Branicio, P.S., Joshi, S.P., Liu, Z.-S., Zhang, Y.-W. (2013-11-18). A transition from localized shear banding to homogeneous superplastic flow in nanoglass. Applied Physics Letters 103 (21) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4833018|
|Abstract:||A promising remedy to the failure of metallic glasses (MGs) by shear banding is the use of a dense network of glass-glass interfaces, i.e., a nanoglass (NG). Here we investigate the effect of grain size (d) on the failure of NG by performing molecular dynamics simulations of tensile-loading on Cu 50Zr50 NG with d = 5 to 15 nm. Our results reveal a drastic change in deformation mode from a single shear band (d ∼ 15 to 10 nm), to cooperative shear failure (d ∼ 10 to 5 nm), to homogeneous superplastic flow (d ≤ 5 nm). Our results suggest that grain size can be an effective design parameter to tune the mechanical properties of MGs. © 2013 AIP Publishing LLC.|
|Source Title:||Applied Physics Letters|
|Appears in Collections:||Staff Publications|
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