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Information × Registration Number 0211U007999, 0109U003780 , R & D reports Title Physical principles of nanostructure state in high temperature alloys under friction stir treatment of flat and complex shaped surfaces popup.stage_title Head Sidorenko Sergey, Доктор фізико-математичних наук Registration Date 08-12-2011 Organization Faculty of аircraft and space systems NTUU "KPI" popup.description2 The developed method of applying friction of mixing were obtained and studied fashion and industrial design of coatings for copper, nickel and nickel-chromium alloys such as WC-70l (~ 70 atm.% Ni, ~ 30 atm.% Cr). Based on structural analysis (scanning and transmission electron microscopy, X-ray analysis) explored tensions and structural-phase state of the coating material. Pidtverzheno possibility of formation of surface layers developed method that skladayutsya koheziyno of interconnected micro-and nanoscale structural components with an average size of 20 30mkm and 10-30nm respectively, while kvazishary of microstructure and nanostructures have sharp boundaries between them. Shown that the (by volume) phases in the coating alloy ЧC-70l is a solid solution of alloying elements on the basis of nickel and strengthening phases intermetaliс Ni3Mei - phase Ni3Al (where Me - Cr, Mn, Al and other metals that small number of members of the alloy). Their spatial and dimensional distributions, the level of mechanical stress allows for increased physical and technical properties: wear resistance 1.5 times, corrosion resistance is 1.5-2 times the microhardness of 2-2.5 times in comparison with the properties of materials for processing. On this basis the proposed principles of micro-and nanostructured states in surface layers, which are as follows: superposition (combination of) the process of deformation by friction and deformation mixing provides the following predefined special structural and phase inhomogeneity (distributions) in depth (eg, micro-and nanostrukturuvannya surface layers at depths from the surface of millimeter wave products, which greatly exceeds the depth of micro-and nanostrukturuvannya under the influence of friction only, the formation of surface layers, which consist of koheziyno interconnected micro-and nanoscale structural components with an average size of 20 and 30mkm 10-30nm respectively, etc..), which provide improved physical and technical characteristics. Product Description popup.authors Демченко Леся Дмитрівна Зеленін Єгор Віталійович Котенко Ігор Євгенович Нестеренко Юрій Валерійович Сидоренко Сергій Іванович popup.nrat_date 2020-04-02 Close