Search academic texts

Information × Registration Number 0304U004160, 0103U004208 , R & D reports Title Investigation of nano- and microcrystalline structures evolution fundamentals and mechanisms in condensed environments popup.stage_title Дослідження високодисперсних структур в сплавах та сполуках перехідних металів Head Kuklin V.M., Доктор фізико-математичних наук Registration Date 25-03-2004 Organization Kharkov National University named after V.N.Karazin popup.description2 Object of research — alloys and intermetals Zr and Fe, silicides, carbons and borids Mo, W, Ti, Nb, thin-film systems metal-nonmetal, alloys of system Co-Fe-Nb with highdisperse and a composite microstructure, structures with the distributed defects on a surface of firm ph. The purpose of work — development of theoretical bases of management by a structural-phase condition planar both spatial and the microcrystalline structures formed by transitive metals and their double and multicomponent connections with nonmetals, and a formulation of scientific offers for reception of the listed materials with required structure. The theoretical section of work has for an object development of analytical and numerical methods of the description of phase transformations in the specified structures. Methods of research — experimental and technological methods of synthesis and distribution of inorganic connections, manufacturing and thermomechanical processing of alloys; methods of the analysis of structure and phasestructure Research of structure and phase structure of superficial layers of threefold alloys Zr-Fe-Nb is lead. Composite and structural heterogeneity surface layers is revealed. On the basis of the received data three-dimensional diagrams which connect concentration and phase heterogeneity for binary and threefold alloys in superficial layers with temperature and duration of thermal processing of the deformed alloys are constructed. Migration nanocrystalline particles ferriferous particles intermetalline inclusions in superficial layers of alloys at thermal in a range of temperatures 570 — 1070 to is caused by high mobility of borders of grains in Zr to a matrix. Segregation it is closely connected to processes of coagulation of particles and their migration by borders of grains. Features of behaviour TPC are found out at a proton irradiation. With use of measurements of geometrical parameters of gas bubbles which are formed in interphase ferriferous. Product Description popup.authors popup.nrat_date 2020-04-02 Close