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Information × Registration Number 0220U100517, 0117U000345 , R & D reports Title Mechanics and physical-chemical process by diffusion welding, brazing, hardening high-temperature nickel alloys and heterogeneous materials popup.stage_title Head Kvasnytskyi Viacheslav F., Registration Date 21-01-2020 Organization Admiral Makarov National University of Shipbuilding popup.description2  Object of research - the processes of formation of joints at the soldering and hardening of heat-resistant nickel alloys and stress-strain state in the conditions of instant plasticity and creep and influence of structural and technological factors. The purpose of the project is to develop the physicochemical and thermo-deformation foundations of the brazing and strengthening of heat-resistant Niel alloys and promising materials and technologies for the production of new and offshore turbines. Research methods - computer simulation, light and electron microscopy methods, local X-ray and X-ray diffraction analysis, differential thermal analysis, atomic emission spectral analysis, methods of plastic deformation and mechanical and corrosion studies at high temperature. The finite element method, using the ANSYS software package, establishes regularities of the influence of properties and structural factors on the deformation and stresses of nodes of heterogeneous materials and connections of high-strength nickel alloys with intermediate layers. Based on the analysis of new nickel alloy (WNS) systems for new generation offshore gas turbines, our own long-term experience of soldering and surfacing, we have developed the principles of alloying of solders and reinforcing materials, which will increase the operating temperature of the joints and gas accordingly by 50-60 ° C. resource and efficiency of offshore gas turbine engines. The basics of solder development for the new generation of LMWS are formulated. New KMX-2 and KMHS-2 alloys have been developed for surfacing the contact surfaces of marine gas turbine parts with high resistance to high-temperature salt corrosion (HSC), which exceed the performance of modern HTN-61 and HTN-62 reinforcing materials. Ways to activate acetylene-oxygen flame and plasma flow using boron trifluoride are suggested. The technological characteristics, structure, chemical composition, mechanical properties of soldered joints and hardened s Product Description popup.authors Yermolaiev Hennadii Volodymyroch Hennadii V. Aleksieva Svitlana Ivanivna Svitlana I. Buhaienko Borys V. Buturlia Yevhen A. Drahan Stanislav V. Karpechenko Anton A. Kvasnitsky Victor V. Kostin Oleksandr Mykhailovych Oleksandr M. Labartkava Andrii Volodymyrovych Andrii V. Labartkava Aleksandr V. Martynenko Volodymyr O. Matvienko Maxim V. Petrenko Leonid M. popup.nrat_date 2020-04-02 Close