Thermodynamic prediction of bulk metallic glass forming alloys in ternary Zr-Cu-X (X=Ag, Al, Ti, Ga) systems

作者: S. Vincent , D.R. Peshwe , B.S. Murty , Jatin Bhatt

DOI: 10.1016/J.JNONCRYSOL.2011.06.024

关键词:

摘要: article i nfo Prediction of bulk metallic glass (BMG) forming compositions has always been a challenge due to thermodynamic and kinetic constraints. In the present investigation, parameter based on enthalpy chemical mixing (ΔHchem) mismatch entropy (ΔSσ/kB) used correlate with ability in some Zr BMGs. The new parameter, PHS= ΔHchem× ΔSσ/kB, is found have strong correlation configurational (ΔSconfig/R) range 0.9-1.0. PHS calculated for Zr-Cu-Ag, Zr-Cu-Al, Zr-Cu-Ti Zr-Cu-Ga ternary systems. It observed that all systems studied, best BMG composition (highest critical diameter (Zc) formation) one corresponds highest negative value. Present approach using could be road map design compositions.

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