Design and characterization of novel Zr-Al-Fe-Y metallic glasses with nanoscale phase separation
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Authors
Organisational units
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 language | English |
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Article number | 102104 |
Number of pages | 7 |
Journal | Materialia |
Volume | 34.2024 |
Issue number | May |
Early online date | 24 Apr 2024 |
DOIs | |
Publication status | Published - May 2024 |