Abstract
We have fabricated micro-/nano-pillars of two metallic glasses (MGs), Cu-based Cu47Ti33Zr11Ni6Sn2Si1 and Zr-based Zr50Ti16.5Cu15Ni18.5, respectively, with pillar tip diameters ranging from ∼650 to ∼90 nm. These pillars were mechanically tested in situ in transmission electron microscopy as a function of pillar diameters. It turns out that the yield strengths of both MGs are close to those of the bulk glasses and are essentially size independent. Statistical physics description of strength for small size metallic glass is discussed.
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