Conclusion
Heating of the carbon steel specimens at up to 400°C and holding for up to 60 min causes a decrease in hydrogen content in them and an increase in the indices of plasticity while not leading to a reduction in strength of the metal.
To determine the true values of plasticity of railroad wheels it is recommended that the specimens be aged or tempered at 400°C before testing.
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Literature cited
V. I. Shapovalov, The Influence of Hydrogen on the Structure and Properties of Iron-Carbon Alloys [in Russian], Metallurgiya, Moscow (1982).
M. I. Staroseletskii, V. S. Konovalov, Z. M. Bosis, et al., "The influence of the hold time of wheels on the residual hydrogen content and plasticity of the metal," Met. Gorn. Promysh., No. 2, 39–40 (1984).
V. I. Shapovalov, M. I. Staroseletskii, V. V. Trofimenko, and N. V. Antipova, "The behavior of hydrogen in steel in the production of one-piece rolled railroad wheels," Stal', No. 6, 72–74 (1982).
Additional information
K. Libknekht Lower Dnepr Tube Rolling Plant, Moscow Evening Metallurgical Institute. Institute of Ferrous Metallurgy, Dnepropetrovsk. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 51–52, June, 1986.
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Ozimina, V.V., Bashnin, Y.A., Staroseletskii, M.I. et al. Influence of heating temperature on the plasticity of railroad wheel metal. Met Sci Heat Treat 28, 450–452 (1986). https://doi.org/10.1007/BF00836897
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DOI: https://doi.org/10.1007/BF00836897