Abstract
In this study, flexible Cu50Zr50 metallic glass fibers (MGFs) with a diameter of 50 μm were prepared by a melt extraction method. The microfibers were axially and radially uniform with a smooth surface. It was found that the elastic modulus of the micron-sized Cu50Zr50 MGFs was low and could increase towards the value of the bulk counterparts with multiple-loading tension. High resolution transmission electron microscopy (HRTEM) experimental observation verified that tensile stress could induce the nanostructural rearrangements in metallic glasses from disorder to short- and medium-range order. Meanwhile, this unique fact was explained by the potential energy landscape with multiple metastable states.
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