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Information × Registration Number 0215U000863, 0111U009715 , R & D reports Title Investigation of fundamental material science issues a radiation resistant materials for atomic -energy complex. popup.stage_title Head Voyevodin Victor Mykolayovich, Доктор фізико-математичних наук Registration Date 20-07-2015 Organization National scientific center "Kharkov Institute of physics and technology" popup.description2 3.For the first time in radiating materiology within the framework of one work experimental researches and mathematical modelling of effects of деформационно-phase instability реакторных materials, both in elastic, and in plastic area of deformations are lead(carried out). On the basis of results of experimental researches and the literary data it is established дозовая dependence of influence of an irradiation on elastic modules реакторных materials which has so-called "колоколообразный" character. At low dozes (less than 0.1 dpa) rather small growth of modules which then is replaced by their reduction is observed. It is established the correlation of the irradiation effects with parameter of a crystal lattice changes. The role which plays change of elastic modules in radiation embrittlemet of materials is analysed. With the purpose of definition of mechanisms of origin of cracks in nonequilibrium systems, are investigated nano mechanizms creations of free volume due to collective processes - phase transformations of the martensitic type.It is shown, that elastic deformation 11-ти elementary bct cells of iron on 4,2 % leads to to formation of one vacancy. Energy of formation of one vacancy on this mechanism which equal approximately 0,04 еV, that in thirty times is less, than on Frenkel's and Shottki mechanisms is determined. Energy of vacancy void formation of critical radius (six angstrem) aproximately equal 3 еV is determined. Mechanisms radiation embrittlement and hardenings of stainless steels ЭИ 852 and ЭП 450, irradiated up to extreme dozes - 100 dpa are investigated. Features of mechanisms of plastic instability as dislocation chenneling in these materials, connected with void cutting by moving dislocations in channels are established. Product Description popup.authors Брик Віктор васильович Василиленко Руслан Леонідович Воєводін Віктор Миколайович Гоженко Сергій Васильович Кальченко Олександр Сергійович Крайнюк Евген Олександрович Купріянова Юлія Едуардовна Лаптев Ігор миколайович Мітрофанов Анатолій Сергійович Неклюдов Іван Матвійович Ожигов Леонід Семенович Пархоменко Олександр Олексійович Руденко Олексій Генадійович Савченко Володимир Іванович Толмачова Галина Миколаївна Шрамченко Сергій Васильович popup.nrat_date 2020-04-02 Close