On the correlation of Young’s modulus and the fracture strength of metallic glasses

Abstract

It is generally believed that there is no simple relationship between ultimate fracture strength and stiffness for an elastically isotropic material. By taking bulk metallic glasses (BMGs) as model materials, the relation between ultimate fracture strength and elastic moduli was analyzed within Griffith theory framework. The observed correlation between elastic moduli and fracture strength in BMGs reveals the effects of BMG defects and plastic zone size on the crack resistance of these model materials.