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Information × Registration Number 0217U000490, 0116U004337 , R & D reports Title Optimization of the structure of cold-deformed stainless steel and manufacturing of taps for repair of pipelines for nuclear and thermal power plants popup.stage_title Head Sergiy Firstov, Доктор фізико-математичних наук Registration Date 07-02-2017 Organization Frantzevich Insitute for Materials Science Problems of the Ukranian National Academy of Sciences popup.description2 The method of analysis of deformation distribution in the local volumes of strained product, which is based on a comparison of the hardness values for a sample with a known strain distribution, which was deformed under uniaxial tension with microhardness on separate sites of cold challenge has been developed. It is established that plastic deformation in the local layers of branches significantly exceeds macrodeformation, which is defined through the changes of the cross section of the pipe wall. The nature of structural changes in stainless steel after bending has been investigated. It is shown that nanostructure with small size of structural elements ~ 200 nm is formed under complex severe deformation.5481 Product Description popup.authors Даниленко В.І. Даниленко М.І. Подрезов Ю.М. Фірстов С.О. popup.nrat_date 2020-04-02 Close