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Information × Registration Number 0223U004708, 0123U102649 , R & D reports Title Advanced high-strength and high-ductility steel Fe-Mn-Al-C: the effect of technological parameters on the formation of their structure and physicochemical properties popup.stage_title Head Shemet Volodymyr Z., Кандидат хімічних наук Registration Date 30-11-2023 Organization National Technscal University of Ukraine "Kiev Polytechnic Institute". popup.description2 Research report: 276 pages, 38 tables, 153 figures, 167 references. HIGH-DUCTILITY HIGH-STRENGTH STEELS, HIGH-ENTROPY STEELS, ELECTROSLAG REMELTING (ESR) MICROSTRUCTURE, κ-CARBIDES, THERMOMECHANICAL TREATMENT, NON-METALLIC INCLUSIONS, HIGH-TEMPERATURE OXIDATION, MECHANICAL PROPERTIES. The object of research is high-strength Fe-Mn-Al-C steels with high elasticity. The purpose of the research is to determine influence of alloying elements on the strengthening mechanisms of Fe-Mn-Al-C high-entropy steels and to select their chemical composition with high and low Al concentration and optimal Mn and C content. Samples of Fe-Mn-Al-C system steels with different chemical composition were obtained with the content of the main elements in the range: manganese 18-30 % wt., aluminum 5-15 % wt. and carbon 0.5-1.5 % wt. Sample-like ingots were obtained by vacuum-arc and electroslag remelting, as well as by induction melting with subsequent casting. Some alloys were additionally modified by Si, Mo and La. Fe-Mn-Al-C steel samples were analyzed using: X-ray fluorescence chemical analysis, optical and scanning electron microscopy, energy dispersive X-ray microanalysis, X-ray diffractometry, differential scanning calorimetry, etc. Fractography of the samples was investigated during the analysis of the steel’s mechanical properties. According to the works results, two alloys with high mechanical properties were obtained: Fe-30Mn-7.7Al-0.6C, obtained by induction melting, had strength, plasticity and average microhardness (austenite) of 894 MPa, 51.5%, 368 kg/mm2, respectively, as well as Fe -24Mn-11Al-1.4C, obtained by ESM, had strength, plasticity and average microhardness (austenite) of 1258.4 MPa, 8.61%, 393.4 kg/mm2, respectively.  Product Description popup.authors Voron Mykhailo M. Semenko Anastasiia Yu. Tymoshenko Andrii Mykolayovych Shemet Volodymyr Z. popup.nrat_date 2023-11-30 Close