Effects of size on the mechanical response of metallic glasses investigated through in situ TEM bending and compression experiments Chen, C.Q.; Pei, Y.T.; Hosson, J.T.M. De

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We have fabricated micro-/nano-pillars of two metallic glasses (MGs), Cu-based Cu 47 Ti 33 Zr 11 Ni 6 Sn 2 Si 1 and Zr-based Zr 50 Ti 16.5 Cu 15 Ni 18.5 , 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.