Author:
Bytsenko O.A.,Steshenko I.G.
Abstract
In this paper, the level of residual surface stresses of 15-5РН steel samples manufactured using additive technology before and after heat treatment is analyzed. The research was carried out by layer-by-layer electrochemical etching of stressed metal layers from the sample surface. As a result of the tests, the parameters of the distribution of surface technological residual stresses of the 1st kind (sign, magnitude, depth of occurrence) were obtained. In addition, it is shown that irradiation with high-current and pulsed electron beams affects the level of surface residual stresses and depends on the presence of post-processing operations with or without machining after growing samples by selective laser melting.