Study of the Microstructure and Phase-Composition of a WC-Alloy with a Hadfield Steel Binder |
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Authors: | L M Molchunova S F Gnyusov S N Kul'kov |
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Institution: | (1) Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, Russia |
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Abstract: | The phase composition and structure of a tungsten carbide alloy with a Hadfield steel binder are studied using metallography, x-ray diffraction analysis, and transmission electron microscopy. It is found that tungsten carbide is dissolved in the binder during sintering. This gives rise to a nonuniform distribution of the alloying additions in the -solid solution, which results in precipitation of complex carbides of the (W, Fe)
x
C type having different crystal-lattice parameters. The volume fraction of these carbides is as high as 9–10%. |
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