The Peculiarities of the Influence of the Finite Sizes of a Detail on the Distribution of the Surface Layer Micro-hardness

In carrying out engineering calculations the dimensions of the investigated models are often neglected. On the one hand, it can greatly simplify the calculation of the plane model, but on the other hand, exclude the consideration of the effect of the sample geometric dimensions on the process under study. In the study of strike systems, which are based on wave processes, we should not exclude the influence of the finite size of the samples on the process of hardening. This is due to the fact that the nature of elasto-plastic deformation has got its peculiarities, since hardening is performed by the transmission of energy in the form of a deformation wave, which is converted on all borders with variable acoustic impedance, including borders, which are the final dimensions of the test sample. Hardening wave deformation was investigated in the past, but in those studies the finite size of the sample was not taken into account [1, 3]. The aim of this work is to identify patterns of influence of the finite size of the material on the distribution of micro-hardness of the surface layer under its wave deformation hardening.