Electron-ion-plasma modification of the structure and properties of commercial steels

Yury Fedorovich Ivanov, A. A. Klopotov, A. I. Potekaev, N. Koval, V. Vlasov

Research output: Contribution to journalArticle

Abstract

The work is devoted to the structural-phase analysis of steels of the austenitic and martensitic grade, irradiated with a high-intensity pulsed electron beam of the submillisecond duration of exposure in the mode of the surface layer melting. A thermodynamic analysis of phase transformations occurring during heat treatment in alloys of the composition Fe-Cr-C and Fe-Cr-Ni-C, which are the basis of steels 20X13 and 12X18H10T, is carried out. It is shown that formation of solid solutions on the basis of α-iron (BCC crystalline lattice) and γ-iron (FCC crystalline lattice) as well as the entire range of carbide phases of a complex elemental composition (M23C6, M7C3 HM3C, where symbol M refers to atoms of metallic elements Fe, Cr, and Ni) is possible in equilibrium conditions in given materials. The irradiation of steels 12X18H10T and 20X13 with a high-intensity pulsed electron beam of the submillisecond duration of exposure is carried out. It is shown that the electron-beam processing of steel in the melting mode and the subsequent rapid crystallization is accompanied by a significant transformation of the surface layer structure, consisting in complete dissolution of original carbide phase particles; in formation of dendritic crystallization cells of submicron sizes; in occurrence of martensitic γ→α and γ→ϵ transformation; in re-allocation of nanosized particles of carbide and intermetallic phases.

Original languageEnglish
Article number012070
JournalIOP Conference Series: Materials Science and Engineering
Volume168
Issue number1
DOIs
Publication statusPublished - 7 Feb 2017

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Steel
Carbides
Electron beams
Ions
Crystallization
Plasmas
Crystal lattices
Electrons
Melting
Iron
Crystalline materials
Chemical analysis
Intermetallics
Solid solutions
Dissolution
Phase transitions
Heat treatment
Irradiation
Thermodynamics
Atoms

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Electron-ion-plasma modification of the structure and properties of commercial steels. / Ivanov, Yury Fedorovich; Klopotov, A. A.; Potekaev, A. I.; Koval, N.; Vlasov, V.

In: IOP Conference Series: Materials Science and Engineering, Vol. 168, No. 1, 012070, 07.02.2017.

Research output: Contribution to journalArticle

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