Machines. Technologies. Materials.
Vol. 15 (2021), Issue 7, pg(s) 279-282

MATERIALS

State and prospects of application of plastically deformed nanostructured metals, alloys, and sprayed coatings

  • 1 Institute of Pulse Processes and Technologies of the National Academy of Sciences of Ukraine – Mykolaiv, Ukraine
  • 2 Admiral Makarov National University of Shipbuilding – Mykolaiv, Ukraine

Abstract

It is shown that thermal stabilization of the polygonization substructure up to 60 min is provided by a combination of uniaxial compressive deformations, namely dynamic by 30% and static by 30%, followed by pre-recrystallization heat treatment (PHT) at the initial recrystallization temperature. This ensures subgrain size of 80… 187 nm, while strength characteristics increase by 10… 30% with sufficient ductility.
It is shown that PHT provides the formation of nanoscale elements in electric arc coatings with Sv-08G2S (Св-08Г2С), and additional deformation of the coating allows to increase the thermal stability of the polygonization substructure up to 40… 50 min. It is found that the combined deformation and subsequent PHT of steels provides an increase in the calculated number of nanoscale subgrains from 15 to 65%.

Keywords

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