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0212U005410,
0111U008991
,
The developmentof physical foundations of a metal material with a special structure (monocrystalline, submikrocrystalline, nanocrystalline) and improved properties for nuklear reactors, electronic devices, gas turbine and medicine
Papirov Igor Isakovich, Tikhonovsky Mikhail Andreevich,
30-10-2012
National Science Center "Kharkiv Institute of Physics and Technology
In studying the decay process found that increasing the value of the previous true (logarithmic) plastic deformation ?pr alloy HT - 50 from 4.0 to 7.6 leads to a true acceleration of supersaturated solid solutions in terms of all the studied treatment (from 50 to 2000 hours). At the same volume fraction of stable ?-Those phases that formed during the collapse, resulting in the increase of plastic deformation in terms of annealing 50, 400 and 2000 hours increased by 50, 45 and 39%, respectively. With increasing degree of deformation change mechanisms leading to an increase in the number of phases that fell. Thus, the magnitude ?pr = 4,0 particle phase, which fell, increasing the time of heat treatment, mainly by increasing the density of particles dropped at about the sustainability of their size. At the same time, the alloy with ?pr = 7,6 This increase is a result of growth in the size precipitates sustainability of their size and even slight decline density fallout. With a strong deformation of two-phase alloy Cu - Nb methods rolling formed micro - and nano-structure that has significant anisotropy values ??of micro - and nanotverdosti and Young's modulus. With increasing degree of deformation increases significantly micro - and nanohardness. This is due mainly to increasing dispersion phases that make up the composite. This is evidenced by the dependence of micro - and nanotverdosti of dispersion, a similar correlation Hall - Patch. When the maximum degree of deformation, a decrease of Young's modulus of the material that may be caused as a factor of texture and structure change between phase boundaries and the level of internal stresses.
Єфімов О. А.
Андрієвська Н. Ф.
Биковский А. А,
Бовда В. О.
Бовда О.М.
Великодний О. М.
Кисляк І. Ф.
Колодій І. В.
Кондратов О. А.
Костін О. О.
Кутній К. В.
Липовска Ю. С.
Онищенко Л. В.
Панов В. А.
Рудичева Т. Ю.
Серченко Н.М.
Стороживлов Г. Є.
Тихоновський М.А.
Тортіка О. С.
Яровой В. Г.
2020-04-02
Updated: 2025-12-07
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