Strength of submicrometer diameter pillars of metallic glasses investigated with in situ transmission electron microscopy
Strength of submicrometer diameter pillars of metallic glasses investigated with in situ transmission electron microscopy
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DOI：
10.1080/09500830903236038
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发表时间：
2009-09
影响因子：
1.2
通讯作者：
C. Chen;Y. Pei;J. Hosson
中科院分区：
文献类型：
--
作者：
C. Chen;Y. Pei;J. Hosson
我们分别制备了Cu基Cu 47 Ti 33 Zr 11Ni 6Sn 2Si 1和Zr基Zr50Ti16.5Cu15Ni18.5两种金属玻璃的微/纳米柱，柱的尖端直径为650 ~ 90 nm。这些支柱进行了机械测试，在原位的透射电子显微镜作为支柱直径的函数。事实证明，两种MG的屈服强度接近于块状玻璃的屈服强度，并且基本上与尺寸无关。讨论了小尺寸金属玻璃强度的统计物理描述。
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.