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Information × Registration Number 0213U003330, 0110U000138 , R & D reports Title Development of the scientific and technological fundamentals by structure and properties controliron-carbon alloys popup.stage_title Head Trotsan A.I., Доктор технічних наук Registration Date 25-01-2013 Organization I.N.Frantsevich Institute for Probmens of Materials Sciences Ukrainian Academy of Science popup.description2 Research the process of crystallization of iron-carbon melt with the input dispersed modifiers is conducted; conditions for rational modification not of expensive nanopowders, but by means of feed-ing into the liquid metal particles nitrides and carbides of relatively large size (up to a few microns), able to dissolve to nanosizes and becomes additional crystallization centers at the moment of its be-ginning are defined. The input method of disperse powder in process by loop blowing the melt (LBM), which provides a uniform distribution of particles introduced is proposed. The optimal process pa-rameters modification (particle size and spacing of their variation, the type of particle distribution in the fraction , weight of the modifiers, melt temperature, input method) and effective modifiers of the second kind are developed: for low-carbon steels - TiN, NbN and in lesser degree ZrN and NbC; for cast irons as graphitization modifier - SiC with the addition of TiC or ZrN. Experimental-industrial testing is showed, that the modification with the help dispersed pow-ders (using the optimum technological parameters), at feeding into input through the LBM at the bot-tom casting or flux cored wire in intermediate ladle continuous casting machine by means microstruc-ture refining to increase the all complex of mechanical properties is allowed. In particular, on steel 20 and steel 15GB tensile strength and tensile point yield in 1,3-1,5; relative constriction and percentage elongation in 1,2-1,3; KCV in 1,3-1,6 times; in pig-iron tensile strength at 15-22% and durability the molds from pig-iron in 1,4-2,0 times are increased. Product Description popup.authors Бєлов Б.Ф. Бродецький І.Л. Бурдинюк Н.І. Живченко В.С. Каверинський В.В. Крейденко Ф.С. Чичкарьов Є.А. Шермейстер М.А. popup.nrat_date 2020-04-02 Close