Donets S. Physical and technological bases of modifying the properties of steels 12H21N5T, 08H18N10T, D16 alloy, electrical copper by tubular high-current electron beams

Object: samples made of electrotechnical copper, alloys D16, 12H21N5T, 08H18N10T, irradiated by tubular high-current relativistic electron beam. The goal: establishing modifications regularities of the structure and properties of alloys D16, 12H21N5T, 08H18N10T and electrical copper irradiated by tubular high-current relativistic electron beam in the mode of ablation. Methods: X-ray diffraction method, a method of scanning electron microscopy, metallographic methods, the method of photoelectron spectroscopy, a method of image segmentation, eddy current method. Results: Established that the conductivity of the irradiated samples is reduced by 5-7%, compared to its initial value. It is shown that changes in the structure occurs in the change of microhardness, leading to differences in the mechanisms of samples fracture, irradiated by tubular high-current relativistic electron beam. For samples of stainless steel is determined that in the vicinity of the crater formed by a layered structure, the bands of which correspond to the location isotemperature lines.Effect of a tubular high-current electron beam on the stainless steel in the mode of ablation leads to depletion alloying elements of the surface layer, to formation of the structures of subsurface layer with increased microhardness, to gamma-alpha transformation. Field of application: solid state physics, radiation physics