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

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 language	English
Pages (from-to)	2972-2976
Number of pages	5
Journal	Surface and Coatings Technology
Volume	206
Issue number	11-12
DOIs	https://doi.org/10.1016/j.surfcoat.2011.12.032
Publication status	Published - 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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10.1016/j.surfcoat.2011.12.032

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Structure, phase composition and mechanical properties of hard alloy treated by intense pulsed electron beams. / Uglov, Vladimir Vasilevich; Kuleshov, A. K.; Soldatenko, E. A.; Koval, N. N.; Ivanov, Yu F.; Teresov, A. D.

In: Surface and Coatings Technology, Vol. 206, No. 11-12, 15.02.2012, p. 2972-2976.

Research output: Contribution to journal › Article › peer-review

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

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.",

keywords = "Friction coefficient, Hard alloy, Intense pulsed electron beam, Microhardness, Phase composition, Structure",

author = "Uglov, {Vladimir Vasilevich} and Kuleshov, {A. K.} and Soldatenko, {E. A.} and Koval, {N. N.} and Ivanov, {Yu F.} and Teresov, {A. D.}",

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AU - Uglov, Vladimir Vasilevich

AU - Kuleshov, A. K.

AU - Soldatenko, E. A.

AU - Koval, N. N.

AU - Ivanov, Yu F.

AU - Teresov, A. D.

PY - 2012/2/15

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N2 - 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.

AB - 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.

KW - Friction coefficient

KW - Hard alloy

KW - Intense pulsed electron beam

KW - Microhardness

KW - Phase composition

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