Abstract
Metallic glasses often show excellent mechanical and physical properties due to their random atomic packing. But as a new kind of potential engineering material, metallic glasses have challenged the traditional processing methods. In this letter, continuous Co69.5Fe4.5Cr1Si8B17 metallic glassy wires at micrometer scales with a smooth surface and negligible fluctuation in diameter were prepared by the melt-extraction method. Their mechanical properties were evaluated by carrying out tensile tests. The Co69.5Fe4.5Cr1Si8B17 metallic glassy wires show high tensile fracture strength of the order of 2.8GPa and perform nonlinear deformation behavior prior to fracture. The tensile failure of the glassy wires was controlled by both the normal stress and shear stress.
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