Effect of stress states on the deformation behavior of Cu-based bulk metallic glass in the supercooled liquid region

- The effect of stress states on the deformation behavior in the SLR was studied in the Cu54Ni6Zr22Ti18 BMG alloy.
- The present BMG alloy displayed different plastic stress-strain curves under tensile and compressive plastic strain states.
- The calculation of the diffusivity of Cu atoms indicated that the diffusion of Cu atoms is retarded by compressive stress and accelerated by tensile stress.
- The fast diffusion of Cu atoms under tensile stress caused faster crystallization leading to a fast strain-hardening during the tensile plastic deformation.