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Optimum Shear Stability at Intermittent-to-Smooth Transition of Plastic Flow in Metallic Glasses at Cryogenic Temperatures

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Document pages: 15 pages

Abstract: Through a series of compression tests at cryogenic temperatures, we found that the plasticity of a Zr-based metallic glass can attain a maximum value at a critical temperature at which the transition from serrated flow to non-serrated flow occurs at cryogenic temperatures. The transition point corresponds to the lowest shear-band velocity and the most stable state of plastic shearing during deformation. The results provides an insight for understanding the temperature-dependent plasticity of metallic glasses from shear-band dynamics and may help to design the plasticity ductility of metallic glasses at cryogenic temperatures.

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