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
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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
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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
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Даниленко В.І.
Даниленко М.І.
Подрезов Ю.М.
Фірстов С.О.
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2020-04-02
