Formation of hardened layer in WC-TiC-Co alloy by treatment of high intensity pulse ion beam and compression plasma flows

Vladimir Vasilevich Uglov, G. E. Remnev, A. K. Kuleshov, V. M. Astashinski, M. S. Saltymakov

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The effect of treatment by high intensity pulse ion beam (HPIB) and compression plasma flow (CPF) with energy density greater than 10 J/cm2 on the phase and element composition, microstructure, hardness and depth of modified layer of WC-TiC-Co hard alloy was investigated. It was found that the increase of short-pulse (9 * 10- 2 μs) HPIB energy density (due to the increase of pulses number from 3 to 300) led to the fusion of tungsten and titanium carbides particles following to formation of (W1-xTix)C solid solution oversaturated by tungsten. The formation of great number of cracks inside of fused layer and inside of carbide particles allocated below fused layer takes place as a result of impact of power shock waves generated by HPIB at great number of pulses (100, 300). The higher duration (~ 100 μs) of CPF pulse with the energy density of 13-40 J/cm2 provides convective mixing of melt's components and forms fused layer, the thickness of which reaches 8-10 μm (40 J/cm2). The hardness of the surface layer containing oversaturated (W1-xTix)C solid solution with the thickness of several microns exceeds the hardness of untreated hard alloy in 2 times.

Original languageEnglish
Pages (from-to)1952-1956
Number of pages5
JournalSurface and Coatings Technology
Volume204
Issue number12-13
DOIs
Publication statusPublished - 15 Mar 2010

Fingerprint

Plasma flow
magnetohydrodynamic flow
Ion beams
Hardness
ion beams
Solid solutions
pulses
Titanium carbide
Tungsten
Tungsten carbide
hardness
flux density
Shock waves
Carbides
Fusion reactions
solid solutions
Cracks
Microstructure
titanium carbides
tungsten carbides

Keywords

  • Pulsed ion and plasma beam Tungsten carbide

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Formation of hardened layer in WC-TiC-Co alloy by treatment of high intensity pulse ion beam and compression plasma flows. / Uglov, Vladimir Vasilevich; Remnev, G. E.; Kuleshov, A. K.; Astashinski, V. M.; Saltymakov, M. S.

In: Surface and Coatings Technology, Vol. 204, No. 12-13, 15.03.2010, p. 1952-1956.

Research output: Contribution to journalArticle

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