Design and characterization of novel Zr-Al-Fe-Y metallic glasses with nanoscale phase separation
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In: Materialia, Vol. 34.2024, No. May, 102104, 05.2024.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Design and characterization of novel Zr-Al-Fe-Y metallic glasses with nanoscale phase separation
AU - Singh, Devinder
AU - Parthiban, Ramasamy
AU - Jelinek, Anna
AU - Bhattacharya, Rahul
AU - Chen, Zhuo
AU - Fellner, Simon
AU - Gammer, Christoph
AU - Zhang, Zaoli
AU - Eckert, Jürgen
N1 - Publisher Copyright: © 2024
PY - 2024/5
Y1 - 2024/5
N2 - 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.
AB - 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.
KW - Metallic glasses
KW - Microstructure
KW - Nano-amorphous domain
KW - Phase separation
KW - Zr-alloys
UR - http://www.scopus.com/inward/record.url?scp=85191287550&partnerID=8YFLogxK
U2 - 10.1016/j.mtla.2024.102104
DO - 10.1016/j.mtla.2024.102104
M3 - Article
VL - 34.2024
JO - Materialia
JF - Materialia
SN - 2589-1529
IS - May
M1 - 102104
ER -
