Research Article Open Access

Glassy Amorphous Metal Injection Molded Induced Morphological Defects

Raffaella Aversa1, Daniela Parcesepe1, Relly Victoria V. Petrescu2, Guanying Chen3, Florian Ion T. Petrescu2, Francesco Tamburrino1 and Antonio Apicella1
  • 1 Second University of Naples, Italy
  • 2 Bucharest Polytechnic University, Romania
  • 3 Harbin Institute of Technology and SUNY Buffalo, China
American Journal of Applied Sciences
Volume 13 No. 12, 2016, 1476-1482

DOI: https://doi.org/10.3844/ajassp.2016.1476.1482

Published On: 27 December 2016

How to Cite: Aversa, R., Parcesepe, D., Petrescu, R. V. V., Chen, G., Petrescu, F. I. T., Tamburrino, F. & Apicella, A. (2016). Glassy Amorphous Metal Injection Molded Induced Morphological Defects. American Journal of Applied Sciences, 13(12), 1476-1482. https://doi.org/10.3844/ajassp.2016.1476.1482

Abstract

Melt rheology in injection molded metastable supercooled liquid metal of Zr44-Ti11-Cu10-Ni10-Be25 alloy may induce selective crystallizations. High mobility Be, Cu and Ni atoms have been observed to differently crystallize in bulk metal glassy supercooled liquids. Here, we analyze the result of morphological microscopic observation conduct on Bulk Metallic Glass (BMG) with composition of a commercial liquid metal alloy (LM001B). The injection molded plate has been supplied by "Liquid Metals Technologies Inc, Ca USA" and manufactured using an Engel injection molding machine operating at 1050-1100°C; the observed sample then has been cut by water jet. FEI Scios Dual-Beam has carried out the microscopic observation. Particularly, through a cross section, we observe the presence of crystalline phases on the short-range order. We investigate the presence of short-range order clusters, their distribution and the effect that they could cause on the alloys' behaviors and properties.

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Keywords

  • Bulk Glass Metals
  • Rheology
  • Chemorheological Model
  • Segregation
  • Cold Crystallization