Abstract
The hardness and wear resistance during sliding and abrasive friction of 80S2 (0.83% C, 1.66% Si) and U8 (0.83% C) steels subjected to the isothermal γ → α decomposition in the temperature range 330–650°C and additional 5-min annealing at 650°C are compared. The optimum decomposition temperature is found to be 550°C. At this temperature, fine lamellar pearlite with the maximum hardness and wear resistance as compared to other pearlitic and bainitic structures forms in the silicon steel. The silicon-alloyed fine lamellar pearlite of 80S2 steel is found to have high hardness and abrasive wear resistance as compared to the similar structure in plain U8 steel; however, this pearlite has no advantages in the wear resistance under conditions of sliding friction on a steel plate. Silicon alloying of the bainitic structures in the eutectoid steel leads to a noticeable decrease in the wear resistance during sliding friction and abrasive action. Friction oxidation is shown to negatively affect the abrasive wear resistance of the silicon steel.
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Original Russian Text © A.V. Makarov, V.M. Schastlivtsev, T.I. Tabatchikova, A.L. Osintseva, I.L. Yakovleva, L.Yu. Egorova, 2010, published in Deformatsiya i Razrushenie Materialov, 2010, No. 6, pp. 1–8.
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Makarov, A.V., Schastlivtsev, V.M., Tabatchikova, T.I. et al. Effect of silicon on the wear resistance of high-carbon steels with the structures of isothermal decomposition of austenite during friction and abrasive action. Russ. Metall. 2011, 296–302 (2011). https://doi.org/10.1134/S0036029511040100
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DOI: https://doi.org/10.1134/S0036029511040100