Pulsed electron-beam treatment of WC-TiC-Co hard-alloy cutting tools: Wear resistance and microstructural evolution

Y. F. Ivanov, V. P. Rotshtein, D. I. Proskurovsky, P. V. Orlov, K. N. Polestchenko, G. E. Ozur, I. M. Goncharenko

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The mechanisms for changes in the structure-phase state, microhardness, and wear resistance have been investigated for carbide inserts made of type T15K6 (WC-15TiC-6Co) hard alloy, irradiated with a low-energy (20-30 keV, high-current (~ 102 A cm-2) electron beam of duration 2.5 μs. Using transmission electron microscopy, it has been established that the pulsed melting of the near-surface (~ 1 μm) layer results in the formation of a subgrain structure in the binding phase, segregation of nanosized carbide particles in the near-boundary regions, and the allotropic transformation of WC. The irradiation increases by about three times the durability of the inserts at elevated cutting rates for steels. The increase in durability is associated with the efficient hardening of the Co binder immediately on irradiation and with its high thermal stability being retained in the process of cutting due to the stability of the dislocation substructure provided by second-phase segregates. (C) 2000 Elsevier Science S.A. All rights reserved.

Original languageEnglish
Pages (from-to)251-256
Number of pages6
JournalSurface and Coatings Technology
Volume125
Issue number1-3
DOIs
Publication statusPublished - Mar 2000

Keywords

  • Cemented carbides
  • Pulsed electron-beam treatment

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Fingerprint Dive into the research topics of 'Pulsed electron-beam treatment of WC-TiC-Co hard-alloy cutting tools: Wear resistance and microstructural evolution'. Together they form a unique fingerprint.

  • Cite this

    Ivanov, Y. F., Rotshtein, V. P., Proskurovsky, D. I., Orlov, P. V., Polestchenko, K. N., Ozur, G. E., & Goncharenko, I. M. (2000). Pulsed electron-beam treatment of WC-TiC-Co hard-alloy cutting tools: Wear resistance and microstructural evolution. Surface and Coatings Technology, 125(1-3), 251-256. https://doi.org/10.1016/S0257-8972(99)00569-1