Separation of glass transition and crystallization in metallic glasses by temperature-modulated differential scanning calorimetry

The glass transition behaviour of the four metallic glasses La₅₅Al₂₅Ni₂₀Zn₆₅Mg₃₅and Nd₆₀Fe₃₀Al₁₀and Zr_3oY_3oAl₁₅Ni₂₅has been studied by temperature-modulated differential scanning calorimetry (MDSC). It is clearly demonstrated that the glass transition can be separated from crystallization by MDSC. Two glass transitions have been observed for Zn₆₅Mg₃₅Nd₆₀Fe₃₀Al₁₀and Zr₃₀Y₃₀Al₁₅Ni₂₅Owing to the clearer observation of the glass transition, calculation of the reduced glass temperatures Trg (glass transition temperature divided by the melting point) can now be made with greater confidence.