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

Singh, Devinder ; Ramasamy, Parthiban ; Jelinek, Anna Sophie ; Bhattacharya, Rahul LU ; Chen, Zhuo ; Fellner, Simon ; Gammer, Christoph ; Zhang, Zaoli and Eckert, Jürgen (2024) In Materialia 34.
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 Zr70-xAl12.5Fe17.5Yx (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... (More)

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 Zr70-xAl12.5Fe17.5Yx (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.

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author
; ; ; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Metallic glasses, Microstructure, Nano-amorphous domain, Phase separation, Zr-alloys
in
Materialia
volume
34
article number
102104
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:85191287550
ISSN
2589-1529
DOI
10.1016/j.mtla.2024.102104
language
English
LU publication?
no
id
e39ced86-617b-4758-98d1-37af950932fc
date added to LUP
2025-08-28 21:11:09
date last changed
2025-09-22 12:13:09
@article{e39ced86-617b-4758-98d1-37af950932fc,
  abstract     = {{<p>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<sub>70-</sub><sub>x</sub>Al<sub>12.5</sub>Fe<sub>17.5</sub>Y<sub>x</sub> (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.</p>}},
  author       = {{Singh, Devinder and Ramasamy, Parthiban and Jelinek, Anna Sophie and Bhattacharya, Rahul and Chen, Zhuo and Fellner, Simon and Gammer, Christoph and Zhang, Zaoli and Eckert, Jürgen}},
  issn         = {{2589-1529}},
  keywords     = {{Metallic glasses; Microstructure; Nano-amorphous domain; Phase separation; Zr-alloys}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Materialia}},
  title        = {{Design and characterization of novel Zr-Al-Fe-Y metallic glasses with nanoscale phase separation}},
  url          = {{http://dx.doi.org/10.1016/j.mtla.2024.102104}},
  doi          = {{10.1016/j.mtla.2024.102104}},
  volume       = {{34}},
  year         = {{2024}},
}