Processability of Bulk Metallic Glasses

American Journal of Applied Sciences, Volume 14, Issue 2, Pages 294-301, 2017; DOI: 10.3844/ajassp.2017.294.301

8 Pages Posted: 21 Nov 2017

See all articles by Raffaella Aversa

Raffaella Aversa

Advanced Material Lab - Department of Architecture and Industrial Design

Daniela Parcesepe

Advanced Material Lab - Department of Architecture and Industrial Design

Relly Victoria Petrescu

Polytechnic University of Bucharest - ARoTMM-IFToMM

Filippo Berto

Norwegian University of Science and Technology (NTNU) - Department of Engineering Design and Materials

Guanying Chen

University of Alabama

Florian Ion Petrescu

Polytechnic University of Bucharest - ARoTMM-IFToMM

Francesco Tamburrino

Advanced Material Lab - Department of Architecture and Industrial Design

Antonio Apicella

Advanced Material Lab - Department of Architecture and Industrial Design

Date Written: November 20, 2017

Abstract

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.

Note: © 2017 Raffaella Aversa, Daniela Parcesepe, Relly Victoria V. Petrescu, Filippo Berto, 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.

Suggested Citation

Aversa, Raffaella and Parcesepe, Daniela and Petrescu, Relly Victoria and Berto, Filippo and Chen, Guanying and Petrescu, Florian Ion and Tamburrino, Francesco and Apicella, Antonio, Processability of Bulk Metallic Glasses (November 20, 2017). American Journal of Applied Sciences, Volume 14, Issue 2, Pages 294-301, 2017; DOI: 10.3844/ajassp.2017.294.301 . Available at SSRN: https://ssrn.com/abstract=3074367

Raffaella Aversa

Advanced Material Lab - Department of Architecture and Industrial Design ( email )

81031 Aversa (CE)
Italy

Daniela Parcesepe

Advanced Material Lab - Department of Architecture and Industrial Design ( email )

81031 Aversa (CE)
Italy

Relly Victoria Petrescu (Contact Author)

Polytechnic University of Bucharest - ARoTMM-IFToMM ( email )

Romania

Filippo Berto

Norwegian University of Science and Technology (NTNU) - Department of Engineering Design and Materials ( email )

Trondheim
Norway

Guanying Chen

University of Alabama ( email )

101 Paul W. Bryant Dr.
Box 870382
Tuscaloosa, AL 35487
United States

Florian Ion Petrescu

Polytechnic University of Bucharest - ARoTMM-IFToMM ( email )

Romania

Francesco Tamburrino

Advanced Material Lab - Department of Architecture and Industrial Design ( email )

81031 Aversa (CE)
Italy

Antonio Apicella

Advanced Material Lab - Department of Architecture and Industrial Design ( email )

81031 Aversa (CE)
Italy

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