Modification of Structure of the Surface of Steel (Хгс) as a Result of Influences of High-Current Electron Beam

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Experimental samples of composite materials were made. These composites are based on polystyrene, which has been reinforced with powder of aluminum, with the addition of powder of tungsten for radiation shielding. The optimum modes of operations of production equipment were selected experimentally. Tensile testing of composite materials was carried out at temperatures of 250, 290, 320 К. The maximum tensile strength, at a temperature of 290 К, was a value 45 MPa. Composites with such strength are not destroyed when creating temporary or permanent radiation shielding structures. Using the code Geant4 v 4.9.6p03, calculations of the relative attenuation of the absorbed dose were performed. A layer of composite material 10 mm thick completely absorbs ionizing radiation with energies up to 100 keV. The energy for maximum half-attenuation level is 600 keV for solid layer and 300 keV for balls and loose layer.

Section: Introductionmentioning

confidence: 99%

Brief Overview on Research and Development of Radiation Shielding Protective Composite Materials Based on Polystyrene

Prokhorenko,

Lytvynenko,

Zakharchenko

et al. 2024

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Analysis of Radiation Protective Properties of Polystyrene-Based Composite Materials

Prokhorenko¹,

Lytvynenko²,

Zakharchenko³

et al. 2021

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Polystyrene-metal composite materials were manufactured. Composite materials are made of polystyrene, which has been reinforced with highly dispersed powder-like aluminum. Tungsten or steel powder was applied as a radiation shielding additive. The radiation-protective characteristics of composite materials were studied using sources of ionizing radiation 241Am and 152Eu. Calculations of the relative attenuation of the absorbed dose of gamma radiation for protective materials with different mass composition have been performed. A comparison of the protective characteristics obtained experimentally and found by numerical methods is carried out. Hardness values were measured for composites with different component compositions. An increase in hardness with an increase in the amount of a metal component is shown.

Modification of the Structurally the Phase State of Aluminum Alloy as a Result of Radiation Thermal Treatment

Prokhorenko¹,

Lytvynenko²,

Bryukhovetskiy³

et al. 2022

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The effect of relativistic electron beams on the change in the structure of the 2014 aluminum alloy was studied. The mechanical characteristics (hardness, ultimate strength, conditional yield stress) of the samples were measured before and after irradiation. The influence of phase changes on these mechanical characteristics was investigated. The possibility of cleaning the surface of alloy 2014 using electron beams was studied. The identification of phase inclusions in the aluminum alloy was carried out. The changes in the number of phases that occurred as a result of irradiation with relativistic electron beams were determined.