Abstract
Both structure and phase transformations in subsurface layers as well as the tribological characteristics of WC+30 wt.% Hadfield steel hard metal subjected to pulsed electron beam melting and then rubbed against a disk made of tool steel have been investigated. The melting was induced by a low-energy (10-40 keV), high-current electron beam (2.5 μS, 5-40 J/cm2). It has been established that the pulsed melting and following high-speed quenching of the subsurface layers resulted in reducing the grain size of both initial carbide and binding phases as well as in forming metastable carbides of type M12C and M23C6. It has been shown that the microstructural changes provided an increase in the surface microhardness by a factor of 1.5, a decrease in the friction coefficient by a factor of 2, and enhanced wear resistance, as compared to the untreated material.
| Original language | English |
|---|---|
| Pages (from-to) | 97-103 |
| Number of pages | 7 |
| Journal | Wear |
| Volume | 257 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Jul 2004 |
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Keywords
- Electron beam melting
- Friction
- Hadfield steel
- Microstructure
- Tungsten carbide
- Wear
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Surfaces, Coatings and Films
Cite this
The effect of pulsed electron beam melting on microstructure,friction and wear of WC-Hadfield steel hard metal. / Gnyusov, S.; Tarasov, Sergei Yulievich; Ivanov, Yu; Rothstein, V.
In: Wear, Vol. 257, No. 1-2, 07.2004, p. 97-103.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The effect of pulsed electron beam melting on microstructure,friction and wear of WC-Hadfield steel hard metal
AU - Gnyusov, S.
AU - Tarasov, Sergei Yulievich
AU - Ivanov, Yu
AU - Rothstein, V.
PY - 2004/7
Y1 - 2004/7
N2 - Both structure and phase transformations in subsurface layers as well as the tribological characteristics of WC+30 wt.% Hadfield steel hard metal subjected to pulsed electron beam melting and then rubbed against a disk made of tool steel have been investigated. The melting was induced by a low-energy (10-40 keV), high-current electron beam (2.5 μS, 5-40 J/cm2). It has been established that the pulsed melting and following high-speed quenching of the subsurface layers resulted in reducing the grain size of both initial carbide and binding phases as well as in forming metastable carbides of type M12C and M23C6. It has been shown that the microstructural changes provided an increase in the surface microhardness by a factor of 1.5, a decrease in the friction coefficient by a factor of 2, and enhanced wear resistance, as compared to the untreated material.
AB - Both structure and phase transformations in subsurface layers as well as the tribological characteristics of WC+30 wt.% Hadfield steel hard metal subjected to pulsed electron beam melting and then rubbed against a disk made of tool steel have been investigated. The melting was induced by a low-energy (10-40 keV), high-current electron beam (2.5 μS, 5-40 J/cm2). It has been established that the pulsed melting and following high-speed quenching of the subsurface layers resulted in reducing the grain size of both initial carbide and binding phases as well as in forming metastable carbides of type M12C and M23C6. It has been shown that the microstructural changes provided an increase in the surface microhardness by a factor of 1.5, a decrease in the friction coefficient by a factor of 2, and enhanced wear resistance, as compared to the untreated material.
KW - Electron beam melting
KW - Friction
KW - Hadfield steel
KW - Microstructure
KW - Tungsten carbide
KW - Wear
UR - http://www.scopus.com/inward/record.url?scp=2642521100&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=2642521100&partnerID=8YFLogxK
U2 - 10.1016/j.wear.2003.10.011
DO - 10.1016/j.wear.2003.10.011
M3 - Article
VL - 257
SP - 97
EP - 103
JO - Wear
JF - Wear
SN - 0043-1648
IS - 1-2
ER -