ICCM Conferences, The 8th International Conference on Computational Methods (ICCM2017)

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Nanovoids induced homogeneous superplastic in metallic metal
bida Zhu

Last modified: 2017-07-11


Abstract: In this paper, we simulate the tension properties of Cu50Zr50 metallic glass films with regularly distributed nanovoids by molecular dynamics. A deformation mode transition from localized shear banding to homogeneous flow was found in Cu50Zr50 metallic glass with a critical void volume in range of 2.5% and 5%. Further analysis on atomic scale reveals that this failure mode change is realized by multiple shear banding induced by energetic and liquid-like void surface atoms. The simulation results suggested a new strategy on the fabrication of ductile metallic glasses by introducing nanovoids with appropriate volume fraction and average size

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