The size effect on the strength and fracture behavior of metallic glasses reported earlier by the authors is further examined in a mode I fracture from extensive molecular dynamics simulation using multimillion atoms and a method for atomic strain. In sharp contrast to the notch-free and notched samples, with small dimensions, in the large samples, shear bands easily initiate at the notch tips and grow into maturity. We identified two critical length scales for nucleating a shear band: the nucleation zone size of about and the shear length that is at least twice as large as . The shape anisotropy of the critical nucleus described by the two length scales and may contribute to deformation anisotropy.
Skip Nav Destination
Research Article| December 05 2007
Assessing the critical sizes for shear band formation in metallic glasses from molecular dynamics simulation
School of Materials Science and Engineering,
Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA and Key Laboratory of Organic Solids,
Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
Search for other works by this author on:
Qi-Kai Li, Mo Li; Assessing the critical sizes for shear band formation in metallic glasses from molecular dynamics simulation. Appl. Phys. Lett. 3 December 2007; 91 (23): 231905. https://doi.org/10.1063/1.2821832
Download citation file:
Don't already have an account? Register
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Could not validate captcha. Please try again.