Lindemann-like rule between average thermal expansion coefficient and glass transition temperature for metallic glasses.

Abstract The correlations between the average linear thermal expansion coefficient < α > and glass transition temperature T g and between GV m (G is shear modulus and V m is molar volume) and T g for a variety of metallic glasses (MGs) were investigated. A Lindemann-like equation, < α > × T g = 0.75 × 10−2, is observed, indicating that the glass transition of MGs follows Lindemann-like rule. The relationship provides a new perspective to understand the mechanism of glass transition and a simple method to predict T g for a given MG. Additionally, T g is found to vary linearly with GV m , implying that an inherent relevance between glass transition and plastic deformation of MGs. Highlights • A Lindemann-like equation, < α > × T g = 0.75 × 10−2, is observed. • T g is found to vary linearly with GV m. • These relationships provide a perspective to understand the glass transition and plastic deformation of MGs. [ABSTRACT FROM AUTHOR]