| Abstract: | Conclusions In gas titanizing of tungsten-containing hard alloys a continuous layer of titanium carbide forms on their surface; its composition, thickness, and microhardness depend on the phase composition of the alloy, in particular on the amount of cobalt phase.When hard alloys contain the phase (Ti, W)C, the thickness of the layer of titanium carbide increases.We discovered selective solubility of the solid solution (Ti, W)C in the cobalt phase in proportion to its decarburization during titanizing; this leads to the formation of ring structure of the grains of (Ti, W)C with higher titanium content on the periphery which, as is known 9], increases the wear resistance of hard alloys.Translated from Poroshkovaya Metallurgiya No. 7(319), pp. 74–79, July, 1989. |
