Effect of pulsed electron-beam melting on the microstructure and tribology properties of WC-Hadfield steel hard alloy

Abstract

Effects of the action of low-energy high-current electron beam pulses of microsecond duration on microstructure and tribological properties of 'WC-30% Hadfield steel' hard alloy in the friction pair with tool steel have been studied. It was established that pulsed melting and following high-speed quenching of the surface layers result in reducing the grain size of both initial carbide and binding phases as well as in formation of metastable M₁₂C and M₂₃C₆ carbides. The microstructure changes lead to increase of the surface microhardness by a factor of 1.5, decrease of the friction coefficient by a factor of 2, and wear resistance enhancement as compared to the material in initial condition.

Original language	English
Pages (from-to)	19-27
Number of pages	9
Journal	Fizika i Khimiya Obrabotki Materialov
Issue number	4
Publication status	Published - 2003

ASJC Scopus subject areas

Materials Science(all)

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Gnyusov, S. F., Tarasov, SY., Ivanov, Y. F., & Rotshtejn, V. P. (2003). Effect of pulsed electron-beam melting on the microstructure and tribology properties of WC-Hadfield steel hard alloy. Fizika i Khimiya Obrabotki Materialov, (4), 19-27.

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abstract = "Effects of the action of low-energy high-current electron beam pulses of microsecond duration on microstructure and tribological properties of 'WC-30% Hadfield steel' hard alloy in the friction pair with tool steel have been studied. It was established that pulsed melting and following high-speed quenching of the surface layers result in reducing the grain size of both initial carbide and binding phases as well as in formation of metastable M12C and M23C6 carbides. The microstructure changes lead to increase of the surface microhardness by a factor of 1.5, decrease of the friction coefficient by a factor of 2, and wear resistance enhancement as compared to the material in initial condition.",

author = "Gnyusov, {S. F.} and Sergei Yulievich Tarasov and Ivanov, {Yu F.} and Rotshtejn, {V. P.}",

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T1 - Effect of pulsed electron-beam melting on the microstructure and tribology properties of WC-Hadfield steel hard alloy

AU - Gnyusov, S. F.

AU - Tarasov, Sergei Yulievich

AU - Ivanov, Yu F.

AU - Rotshtejn, V. P.

PY - 2003

Y1 - 2003

N2 - Effects of the action of low-energy high-current electron beam pulses of microsecond duration on microstructure and tribological properties of 'WC-30% Hadfield steel' hard alloy in the friction pair with tool steel have been studied. It was established that pulsed melting and following high-speed quenching of the surface layers result in reducing the grain size of both initial carbide and binding phases as well as in formation of metastable M12C and M23C6 carbides. The microstructure changes lead to increase of the surface microhardness by a factor of 1.5, decrease of the friction coefficient by a factor of 2, and wear resistance enhancement as compared to the material in initial condition.

AB - Effects of the action of low-energy high-current electron beam pulses of microsecond duration on microstructure and tribological properties of 'WC-30% Hadfield steel' hard alloy in the friction pair with tool steel have been studied. It was established that pulsed melting and following high-speed quenching of the surface layers result in reducing the grain size of both initial carbide and binding phases as well as in formation of metastable M12C and M23C6 carbides. The microstructure changes lead to increase of the surface microhardness by a factor of 1.5, decrease of the friction coefficient by a factor of 2, and wear resistance enhancement as compared to the material in initial condition.

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