Enhanced plastic deformation of Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass by the optimization of frictional boundary restraints

The effect of the boundary conditions during uniaxial compression on the mechanical behavior of the Zr41.2Ti13.8Cu12.5Ni10Be22.5 metallic glass has been evaluated by using a pure Cu foil as a lubricant material between loading platens and specimens. The results reveal that the soft metal is very effective for reducing the contact friction at the platen–specimen interface, leading to a remarkable increase in plastic deformation with respect to more conventional semi-fluid lubricants.