Abstract
Pulsed laser action on cemented titanium carbide with nickel—chromium binder yields deep changes in its structure; and in the case of cemented tungsten carbide with nickel binder, the structural change is accompanied by phase transformations in the heat-affected zone. As a result of these changes, layers with thickness 30–60 µm and 30–60% greater hardness are formed. When the energy density of the laser radiation is higher than 200 J/cm2, thermal failure of cemented carbide surfaces occurs (observed as crack formation).
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References
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Additional information
Institute of Materials Science, Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 9–10, pp. 67–71, September–October, 1995.
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Koval'chenko, M.S., Paustovskii, A.V., Minakov, V.N. et al. Structural changes in the surface of titanium carbide and tungsten carbide hard alloys with nickel binder upon exposure to laser radiation. Powder Metall Met Ceram 34, 551–554 (1996). https://doi.org/10.1007/BF00559967
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DOI: https://doi.org/10.1007/BF00559967