Atomistic Simulation on the Mechanical Properties of Diffusion Bonded Zr-Cu Metallic Glasses with Oxidized Interfaces

A novel welding technique of diffusion bonding for Zr-Cu metallic glass with pre-oxidized surfaces is proposed in this study, which systematically investigated by molecular dynamics (MD) simulation. Compared the conventional technique, process can be well implemented below crystallization temperature glass. The obtained structure possesses glass–glass interfaces (GGIs) similar those nano-glasses. As revealed MD simulation, bonded glasses possess enhanced mechanical strength and ductility that generally do not exist nano-glasses their bulk counterparts. GGIs are found to hinder propagation shear bands, where there strong between Zr O segregated Cu ZrO2 clusters could induce extra plasticity. results demonstrate provide an alternative approach solving longstanding issue size limitation on glasses.