Structure, phase composition and mechanical properties of hard alloy treated by intense pulsed electron beams

Vladimir Vasilevich Uglov, A. K. Kuleshov, E. A. Soldatenko, N. N. Koval, Yu F. Ivanov, A. D. Teresov

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Phase and structural changes in surface layers of WC-TiC-Co hard alloy treated by intense pulsed electron beams (IPEB) with electron energy of 20kV are studied. IPEB energy density absorbed by surface layer was 10-80J/cm 2, pulse duration was 100-200μs. IPEB action with energy density of 30-80J/cm 2 results in the formation of tungsten-supersaturated solid solution (Ti,W)C and transformation WC→W 2C caused by melting of surface layers and their subsequent rapid quenching from liquid. Electron beam treatment leads to the formation of layered structure. Changes of structure and phase composition result in the increase of surface microhardness in 1.5-3 times and in the reduction of friction coefficient in 2-3.5 times.

Original languageEnglish
Pages (from-to)2972-2976
Number of pages5
JournalSurface and Coatings Technology
Volume206
Issue number11-12
DOIs
Publication statusPublished - 15 Feb 2012

Keywords

  • Friction coefficient
  • Hard alloy
  • Intense pulsed electron beam
  • Microhardness
  • Phase composition
  • Structure

ASJC Scopus subject areas

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

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