Effect of cryogenic temperature on the deformation mechanism of a thin sheet of pure copper at the mesoscale

To investigate the effect of cryogenic temperature on the deformation mechanism of thin sheets of pure copper, uniaxial tensile experiments were conducted in the present study. The strength and ductility obtained at 77 K are higher than those of the tensile samples deformed at 295 K. Moreover, samples with large grain sizes have a larger ductility enhancement. The kernel average misorientation analysis results suggested that the dislocation...