Inhomogeneous creep deformation in metallic glasses

Homogeneous creep is a commonly observed phenomenon in bulk metallic glasses. Here we reported inhomogeneous creep behavior that occurs under nanoindentation when the applied stress exceeds the yield stress. Extensive investigation showed that inhomogeneous creep is associated with the local microstructure and the operation of shear bands before creep. The mechanism responsible for inhomogeneous creep is discussed.