Design and characterization of novel Zr-Al-Fe-Y metallic glasses with nanoscale phase separation

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Authors

  • Devinder Singh
  • Ramasamy Parthiban
  • Rahul Bhattacharya
  • Zhuo Chen
  • Simon Fellner
  • Christoph Gammer
  • Zaoli Zhang

External Organisational units

  • Erich Schmid Institute of Materials Science
  • Amity University

Abstract

We present a new phase-separated Zr-based metallic glass (MG) composition, free of toxic elements (Ni and Cu) prepared in a glass-forming system by alloying addition. The substitution of Y in Zr 70- xAl 12.5Fe 17.5Y x (x = 0–15 at.%) results in phase separation, giving rise to nano-amorphous domains in a glassy matrix. A homogeneous MG feature is observed for low concentrations of Y up to x = 5. Microstructure and thermal property analysis indicate that the glasses with x = 10 and 15 at.% Y exhibit a typical liquid phase separation-induced two-glassy phase (Zr-rich and Y-rich) with droplet-like microstructures (nano-amorphous domains). With increasing Y addition, the domain size increases. The microstructural evolution arising due to phase separation in these alloys is confirmed by a combination of transmission electron microscopy (TEM) and atom probe tomography (APT) analysis. The formation of nanometer-size Y-enriched clusters is confirmed by APT for x = 15.

Details

Original languageEnglish
Article number102104
Number of pages7
JournalMaterialia
Volume34.2024
Issue numberMay
Early online date24 Apr 2024
DOIs
Publication statusPublished - May 2024