Structure and abrasive wear resistance of R6M5 steel-tungsten carbide composite coatings

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Abstract

Features of the structure formation, composition, and abrasive wear resistance of R6M5 steel-tungsten carbide (R6M5-WC) composite coatings have been studied as dependent on the WC content. The introduction of ~20 wt % WC into the hardening composition leads to an increase in the fraction of M 6C carbide (in the form of eutectic inclusions with average size ~5.9 μm at grain boundaries and dispersed ~0.25 μm particles in the volume of grains), while a large proportion of metastable austenite (~88 vol %) is still retained. The R6M5-WC coatings exhibit high abrasive wear resistance, which is ensured by the γ → α′ martensite transformation during friction and a muiltimodal size distribution of hardening particles.

Original languageEnglish
Pages (from-to)861-864
Number of pages4
JournalTechnical Physics Letters
Volume38
Issue number9
DOIs
Publication statusPublished - 17 Oct 2012

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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