首页|Thermodynamic model to predict bulk metallic glass forming composition in Zr-Cu-Fe-Al system and understanding the role of Dy addition
Thermodynamic model to predict bulk metallic glass forming composition in Zr-Cu-Fe-Al system and understanding the role of Dy addition
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NSTL
Elsevier
? 2021 Elsevier B.V.In the present investigation, we propose a theoretical approach to design the Zr-rich glass forming composition in Ni-free Zr-Cu-Al-Fe quaternary system under the thermodynamic framework. In this work, quaternary composition is designed by optimising chemical interaction and topological features among the constituent elements to determine enthalpy of chemical mixing (ΔHchem) and atomic size mismatch entropy (ΔSσ/kB) in a statistical framework of configurational entropy (ΔSconfig/R). Further, the effect of elemental Al and Fe addition in the Zr-Cu system on the glass forming ability (GFA) is analysed from thermodynamic viewpoint. Also, an attempt is made to understand the effect of Dy addition on thermodynamics and GFA of Zr-Cu-Al-Fe system. Subsequently, Zr62Cu22Al10Fe5Dy1 bulk metallic glass was synthesized for further investigation.
NSTL
Elsevier
