Processability of Bulk Metallic Glasses
- 1 Second University of Naples, Italy
- 2 Bucharest Polytechnic University, Romania
- 3 Harbin Institute of Technology and SUNY Buffalo, China
- 4 Bucharest Polytechnic University, Romania
Copyright: © 2020 Raffaella Aversa, Daniela Parcesepe, Relly Victoria V. Petrescu, Guanying Chen, Florian Ion T. Petrescu, Francesco Tamburrino and Antonio Apicella. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Microfluidic Shear Flow Instabilities in Injection Molded Glassy Metal are investigated. The formation of microfluidic shear flows instabilities involving the presence of different viscosities fluids has been observed in injection molded Bulk Metallic Glasses. The complex rheology of injection molded metastable glassy metal, which has been hypothesized to induce selective clustering of atoms of different steric hindrance, is discussed. Smaller Be, Cu and Ni atomsmay differently rearrange themselves in the bulk metal glassy super cooled liquids forming flow streams of lower viscosity. Segregation of atoms of different size could activate a variety of viscous flow instabilities such as folding and swirling. FEI Scios Dual-Beam Electron scanning and optical microscopy observations of a commercial liquid metal alloy (Zr44Ti11Cu10Ni10Be25) have been carried out. We discussed the influence of short-range order clusters distribution and its effect in locally induced shear flow instability and corrosion resistance.
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- Bulk Glass Metals
- Shear Flow
- Microfluidic Instability