年間 4 号発行
ISSN 印刷: 1093-3611
ISSN オンライン: 1940-4360
Indexed in
ELECTRON-ION-PLASMA MODIFICATION OF CARBON STEEL
要約
The work is devoted to the identification and analysis of the regularities of the elemental and phase composition, to the change in the defective substructure and mechanical properties of carbon steel subjected to complex processing, combining the samples surface layer saturation with aluminum and subsequent nitriding. The material used for the study was carbon AISI 1020 steel (20 steel), which in the initial state has a ferrite−pearlite structure. The complex modification was carried out in a single vacuum space on the TRIO installation with a chamber size of 600 × 600 × 600 mm3, equipped with a switching unit to implement the elion (electron-ion) mode. Alumunizing was carried out at a temperature of 963 K during 4 h. The cathode of the arc evaporator was made of A7 aluminum alloy (98.8% Al). Subsequent nitriding of the aluminized layer was carried out at a temperature of 803 K for 2 h. It was found that as a result of complex processing, a modified layer up to 80-μm thick was formed. It is shown that the complex modification of carbon steel is accompanied by the formation of a multiphase submicro- and nanostructure state containing iron nitrides of Fe4N and Fe3N composition and aluminum nitride−AlN. The hardness of steel is maximum on the modified surface and exceeds that of the initial material by 4 times. The wear resistance of the modified layer is higher by 2.5 times than that of steel in the initial state.
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Lopatin I. V. , Akhmadeev Yuriy H., Petrikova E. A. , Rygina Maria E., Ivanov Yurii F. , EVOLUTION OF THE AISI 5135 STEEL STRUCTURE AND PROPERTIES UNDER ELION NITRIDING IN LOW-PRESSURE GAS DISCHARGE , High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes, 26, 3, 2022. Crossref
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Lopatin I.V., Akhmadeev Yu.H., Petrikova E.A., Rygina M.E., Ivanov Yu.F., Evolution of the structure and properties of AISI 1020 steel subjected to elion nitriding in a low-pressure gas discharge plasma, 8th International Congress on Energy Fluxes and Radiation Effects, 2022. Crossref