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Information × Registration Number 0224U033039, (0124U002075) , R & D reports Title Creation of scientific and technological foundations for obtaining high-quality castings from AHSS Fe-Mn-Al-C TWIP-steel popup.stage_title Розробка теоретичних і технологічних аспектів одержання якісних виливків з Fe-(25-30)Mn-(7-12)Al-(0,7-1,2)C сталі, визначення оптимальної концентрації легуючих та мікролегуючих елементів і проведення модельних експериментів. Head Semenko Anastasiia Yu., Кандидат технічних наук Registration Date 16-12-2024 Organization Physico-technological Institute of Metals and Alloys of National Academy of Sciences of Ukraine popup.description1 Creation of scientific and technical principles for improving the quality and mechanical properties of cast high-strength highmanganese AHSS TWIP-steels of the Fe-Mn-Al-C system by optimizing the chemical composition, melt processing, improving casting technology and further deformation and heat treatment popup.description2  As a result of the implementation of the first stage of the scientific project, the analysis of existing technological solutions and methods for producing Fe-Mn-Al-C steel with a high content of manganese and aluminum and methods for improving their quality and mechanical properties was carried out. It was determined that microalloying of high-manganese steels with Si, Cr, Mo, V, Nb and Cu helps to make heat treatment more efficient by reducing heating temperatures, which leads to the formation of additional strengthening carbides and dispersed k-carbides. Microalloying and modification of TWIP steels with one or two elements, as a rule, provide good results in the formation of the structural-phase state and mechanical properties. The processes of casting and hot deformation are highly dependent on the chemical composition of Fe-Mn-Al-C steels. The quality of casting of the considered class of steels depends to a large extent on the sources of impurities, especially oxides and phosphorus. The most common problem is casting with the use of slags and hard fluxes in casting molds, which can seriously contaminate the ingots throughout the volume. A method for obtaining high-quality samples of Fe-Mn-Al-C steel in the cast state has been developed and tested. It has been determined that steels containing 25-35 Mn, 7-12 Al, 0.7-1.2 C (% by weight) are promising and can be additionally alloyed with elements such as Si, Mo, Cr, V and Ni. Product Description popup.authors Veis Valentyn I. Likhatskyi Ivan F. Likhatskyi Richard F. Parkhomchuk Zhanna V. Semenko Anastasiia Yu. popup.nrat_date 2024-12-16 Close