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Information × Registration Number 0211U008544, 0109U001758 , R & D reports Title Development of physical and technological foundations for directed control over phase morphology in cast aluminum alloys through metal pulse treatment in fluid state and during hardening. popup.stage_title Head Tsurkin Volodymyr Mykolayovych, Registration Date 23-06-2011 Organization Institute of Pulse Research and Engineering popup.description2 Object of the research - processes of structurization of cast aluminium alloys. Due to methods of thermography, rapid cooling and a microX-ray spectrum the authorss explored the processes of crystal formation and growth in the interval of solidification of alloy АК7 primarily exposed to electrohydropulse treatment in a liquid state. It is established that after treatment the temperature and time interval of phase transition and disctribution of alloying elements change. It is shown that at passing through a hardening alloy of a pulse current the change of an energy barrier of a nucleation is observed. The method of interior heat up of alloy АК7 with an initial dendritic structure by a direct current is experimentally explored and offered for the further development. It is shown that additional isothermal action on the melted volume of current pulses leads to formation of a solid-liquid suspension with a zero degree of skeletonization, 60% content of compact grains of a residual phase of the size less than 100 mkm. The process of electrohydropulse deformation of alloy АК7 in a temperature interval from 585 to 570 оС is experimentally explored. It is shown that electrohydropulse deformation is accompanied by partial curing of shrinkable pores and leads to formation of a structure with degenerate dendritic forms. Product Description popup.authors Іванов А.В. Грабовий В.М. Гумененко М.К. Дьогтєв Ю.Н. Куцоконь В.Д. Мельник О.В. Рубан Г.С. Сінчук А.В. Тарасенко Р.О. Федченко Н.А. popup.nrat_date 2020-04-02 Close