INVESTIGATION OF THE LOCALIZATION OF ADIABATIC SHEARIN M1 COPPER USING SPLIT HOPKINSON BAR METHOD

The results of investigating the localization of adiabatic shear in M1 copper using the split Hopkinson bar are presented. Hat-shaped specimens were used in the tests. Shear stress - displacement diagrams are constructed. The amplitude and duration values of loading pulses are determined, as well as the shear stresses resulting in localized adiabatic shear in the tested specimens. Such investigations are required for studying localized shear as one of the types of heterogeneous deformation of materials, as well as for analyzing its relation with loading and microstructure parameters to be able to construct more substantiated physical models of dynamic deformation of metals. Keywords: dynamic deformation of metals, adiabatic localized shear, amplitudes and durations of loading pulses, shear stress-displacement diagrams, split Hopkinson bar.