Zobrazeno 1 - 9
of 9
pro vyhledávání: '"K. A. Okhapkin"'
Publikováno v:
Metallurgist. 64:709-715
Work is devoted to selecting parameters for a hot plastic deformation regime for alloy KhN55MVTs-ID on the basis of analyzing a distribution map for mechanical energy dissipation coefficients. The map is constructed from results of simulation modelin
Publikováno v:
Physics of Metals and Metallography. 120:853-857
—The structure of a high-temperature nickel alloy subjected to hot plastic deformation has been studied by optical metallography and scanning electron microscopy. The compression-test results obtained in the strain-rate range from 10–3 to 10 s–
Publikováno v:
Metallurgist. 62:1022-1029
The effect of heating temperature and deformation during hot rolling on the microstructure and mechanical properties of steel grade 07Kh12NMFB (0.07C–12Cr–Ni–Mo–V–Nb) are studied. It is established that a change in the plastic deformation r
Autor:
A. S. Kudryavtsev, K. A. Okhapkin
Publikováno v:
Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy. 61:907-913
The influence of long-term operation at 515 °C on structure and properties of 09Cr18Ni9 steel was investigated. Structure and phase composition were obtained using optical and scanning electron microscopy. The phase composition of the steel in equil
Autor:
K. A. Okhapkin, A. S. Kudryavtsev
Publikováno v:
Inorganic Materials: Applied Research. 9:1006-1011
The carburization process of heat-exchanger piping of 09Kh18N9 grade steel in contact with sodium coolant under conditions of long-term service at 515°С has been investigated. An effective diffusion coefficient has been determined on the basis of t
Publikováno v:
Inorganic Materials: Applied Research. 9:1175-1181
—The possibility of improving the resistance of austenitic chromium-nickel steel of 09Kh18N9 and 08Kh16N11М3 grades to pitting and intercrystalline corrosion under the conditions of standby mode of a fast neutron reactor facility has been investig
Autor:
K. A. Okhapkin, A. S. Kudryavtsev
Publikováno v:
Metallurgist. 60:997-1003
The effect of structural defects of wrought semifinished products of vacuum-induction melted alloy KhN55MVTs-VI on service properties is studied. As a result of analyzing the structure using electron microscopy, microdefects have been detected that h
Autor:
V. S. Skutin, M. S. Mikhailov, G. E. Zubova, A. S. Kudryavtsev, B. V. Fedotov, K. A. Okhapkin
Publikováno v:
The Physics of Metals and Metallography. 117:602-610
In the process of the investigation of the heat resistance of a 0.07C–12Cr–Ni–Mo–V–Nb steel of the martensitic–ferritic class, a reduction was revealed in the long-term strength of its welded joints to below the level of the strength of t
Autor:
K. A. Okhapkin, Victor A. Karkhin
Publikováno v:
Welding International. 25:629-632
A technique for transforming an anisothermic diffusion problem (when the diffusion coefficient is not constant) into an isothermal problem (when the diffusion coefficient is constant) is proposed. It is based on the equivalent time concept. The inter