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Information × Registration Number 0214U002914, 0110U007336 , R & D reports Title Research of mechanisms and kinetic of melting modifiers in the iron-carbon melts and creation of low-inertia late modifying processes of ductile irons. popup.stage_title Head Bublikov Valentin B., Доктор технічних наук Registration Date 31-01-2014 Organization Physico-technological institute of metals and alloys National academy of Sciences of Ukraine popup.description2 Research object - interfacial interaction and kinetic of modifiers melting in iron-carbon melts, the processes of cast iron modifying. Research goal - development of scientific and technological bases of low-inertia late modifying processes of iron-carbon melts, providing prevention of cementite phase formation at crystallization, high degree of graphite spheroidization, structure refinement, increasing of technological, physical, mechanical and special properties of ductile iron castings. Research methods - thermodynamic, thermokinetic, metallographic research; structure-phase, x-ray, simultaneous thermal analysis, mechanical tests. Mechanisms and regularities of melting kinetics of FeSiMg ligatures in high-carbon melts are established. Phase composition of the studied modifiers and its influence on the temperature and kinetic modes of melting, diffusion of elements in the contact zone with the melt are defined . Speed of modifiers melting is determined by their composition, the thermophysical properties, physical and chemical processes in the contact zone with the melt, the diffusion change of chemical and phase composition of the layer that melts. After reaching in surface layer of FeSiMg ligatures temperature of about 1078 degrees begins melting of fusible magnesium phases. As result of the interaction of magnesium with cast iron components conditions for the formation and crystallization of the globular graphite are created. New fastmelting complex modifying alloys, which provide obtaining of ductile iron (DI) thin-walled castings without chill are developed . The parameters of low-inertia modifying processes with developed alloys in small metal consumption moulds for obtaining of high-ductility DI of increased strength are determined. Field of application - machine-building industry. Product Description popup.authors Бачинський Віталій Дмитрович Бачинський Юрій Дмитрович Берчук Дмитро Миколайович Болдирева Євгенія Станіславівна Бубликов Валентин Борисович Зелена Людмила Опанасівна Зелений Борис Григорович Зеленська Тетяна Володимирівна Медвідь Сергій Миколайович Мойсеєва Наталія Петрівна Нестерук Олена Петрівна Овсянников Володимир Олександрович Суменкова Вікторія Василівна Хоружий Віктор Якович Ясинський Олександр Олександрович popup.nrat_date 2020-04-02 Close