| 2015 №06 (24) |
DOI of Article 10.15407/tpwj2015.06.25 |
2015 №06 (26) |
The Paton Welding Journal, 2015, #5-6, 112-115 pages
Effect of alloying on physico-mechanical properties of fused tungsten carbides
A.I. Bely1, A.P. Zhudra1, A.I. Roslyakov1, V.V. Petrov1 And P.I. Loboda2
1E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
2NTUU «Kiev Polytechnic Institute». 37 Pobeda Ave., 03056, Kiev, Ukraine. E-mail: mail@KPI.ua
Abstract
Studies of fused tungsten carbide alloying by NbC, Cr3C2, B4C, VC, TiB2, Mo, and of their influence on alloy physico-mechanical properties have been performed. It is shown that the alloy properties largely depend on dimensions and quantity of the reinforcing phase, which can change in a broad range during solidification, depending on melt composition and thermal conditions of solidification. It is established that the high values of physico-mechanical properties of fused carbides are achieved at alloy structures, which are a matrix of one of the refractory compounds, reinforced by fibres of the second refractory compound. Increase of microhardness of the alloy spherical particles by 30-40 %, as well as of strength and wear resistance, particularly at alloying with molybdenum, is found. 6 Ref., 7 Figures.
Keywords: fused tungsten carbide, alloying, spherical particles, microhardness, microstructure, strength, wear resistance
Received: 20.04.15
Published: 28.07.15
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