Investigation of the phase equilibria at 773 K and metallic glass regions in the Ag-Al-Zr ternary system

Hsiao, Hsien-Ming; Lan, Yung-Chin; Hermana, Gita Novian; Chen, Hao; Yen, Yee‐Wen

doi:10.1557/mrc.2017.134

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MRS Communications

2018

DOI: 10.1557/mrc.2017.134

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Investigation of the phase equilibria at 773 K and metallic glass regions in the Ag-Al-Zr ternary system

Hsien-Ming Hsiao

Yung-Chin Lan

Gita Novian Hermana

et al.

Abstract: Abstract

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Cited by 3 publications

References 14 publications

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Thermodynamic description of the Al–Ag–Zr system and discovery of the high-strength ternary phase Al1.84Ag0.16Zr

et al. 2023

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Thermodynamic description of the Al–Ag–Zr system and discovery of the high-strength ternary phase Al1.84Ag0.16Zr

et al. 2023

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Phase equilibria of the Cu-Zr-Ti ternary system at 703 °C and the thermodynamic assessment and metallic glass region prediction of the Cu-Zr-Ti ternary system

Hermana

Hsiao

Kuo

et al. 2021

Journal of Non-Crystalline Solids

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Unequal effect of thermodynamics and kinetics on glass forming ability of Cu–Zr alloys

Ganorkar

Lee

et al. 2020

AIP Advances

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The glass forming ability (GFA) of Cu–Zr alloys has been still ambiguous, due to incomplete or lacking thermophysical properties of Cu–Zr liquids in supercooled and stable states, although tremendous effort has been devoted. We provide here the comprehensive thermophysical properties of Cu–Zr liquids, such as undercoolability, density, viscosity, fusion enthalpy, temperature–time-transformation (TTT) diagram, and crystal–liquid interfacial free energy. Three compositions, Cu64Zr36, Cu56Zr44, and Cu50Zr50, show distinctive anomalies in undercoolability, nose time in TTT, and crystal–liquid interfacial free energy, but not in density and viscosity in supercooled and stable liquid states. The anomalies reflect that the GFA is dominantly governed by thermodynamics rather than kinetics in these bulk metallic glasses (BMGs). In addition, we find that positions of nose temperatures in the TTT curves are below 1/2 (Tg + Tl), which implies unequal contribution of thermodynamics and kinetics. We discuss that empirical GFA parameters cannot explain the glass formation of Cu–Zr alloys due to the unequal contribution, and the Turnbull GFA criterion (Trg = Tg/Tl) is valid for the equal contribution of the two effects. The present experimental findings shed light on the ongoing debate about the GFA criterion of Cu–Zr BMGs.

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Investigation of the phase equilibria at 773 K and metallic glass regions in the Ag-Al-Zr ternary system

Abstract: Abstract

Cited by 3 publications

References 14 publications

Thermodynamic description of the Al–Ag–Zr system and discovery of the high-strength ternary phase Al1.84Ag0.16Zr

Thermodynamic description of the Al–Ag–Zr system and discovery of the high-strength ternary phase Al1.84Ag0.16Zr

Phase equilibria of the Cu-Zr-Ti ternary system at 703 °C and the thermodynamic assessment and metallic glass region prediction of the Cu-Zr-Ti ternary system

Unequal effect of thermodynamics and kinetics on glass forming ability of Cu–Zr alloys

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