Structural-Phase State and Properties of Steel After Plasma-Electron Modification

Yu F. Ivanov, A. I. Potekaev, A. A. Klopotov, Yu A. Abzaev, M. P. Kalashnikov, A. V. Chumayevskii, G. G. Volokitin, E. A. Petrikova, A. D. Teresov, A. Yu Shubin

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The results of investigation of phase and elemental compositions, defect substructure states, mechanical and tribological properties of the modified surface of Steel Gr1 are presented. The process of modification consists in plasma spraying of a Ni–Cr–B–Si-based powder coating followed by its irradiation with a high-intensity pulsed electron beam. It is shown that the coating surface formed by plasma spraying contains micro- and macro-pores and is characterized by high relief. A subsequent processing of the modified surface with a highintensity pulsed electron beam of a submillisecond duration in the mode of surface layer melting is accompanied by smoothing of the coating surface, saturation of the surface layer crystal lattice with Ni, Cr, B and Si atoms, formation of submicron cells of dendritic recrystallization, precipitation of nanosized particles of the second phase, and formation of quench structure. When combined, these treatments result in the formation of a hardened layer up to 1500 μm in thickness, whose microhardness and wear resistance by 4.6–6.5 and 4 factors exceed the respective characteristics of the initial steel.

Original languageEnglish
Pages (from-to)940-947
Number of pages8
JournalRussian Physics Journal
Volume62
Issue number6
DOIs
Publication statusPublished - 1 Oct 2019
Externally publishedYes

Keywords

  • boriding
  • high-intensity plasma electron beam
  • plasma
  • powder material
  • properties
  • structure
  • surface alloy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Structural-Phase State and Properties of Steel After Plasma-Electron Modification'. Together they form a unique fingerprint.

Cite this