Abstract
Because of the high cost of corrosion-resistant steels, a necessary condition for their production is reducing rejection at all stages of processing, including hot forming, by optimizing process parameters. In this work, the mechanical characteristics of a corrosion-resistant steel with high content of boron have been studied at elevated temperatures. Using a special complex for the physical simulation of thermomechanical processes, it has been shown that the optimum temperature range of hot compressive plastic deformation is 950–1100°C. A mathematical model has been constructed, which relates the yield stress to the parameters of the process of hot plastic deformation. During deformation in the range of 850–1150°C, the boride particles present in the steel become oriented perpendicular to the compression axis; at high temperatures, the spheroidization of titanium diborides occurs, which reduces their size.
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Original Russian Text © A.Yu. Churyumov, M.G. Khomutov, A.A. Tsar’kov, A.V. Pozdnyakov, A.N. Solonin, V.M. Efimov, E.L. Mukhanov, 2014, published in Fizika Metallov i Metallovedenie, 2014, Vol. 115, No. 8, pp. 862–866.
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Churyumov, A.Y., Khomutov, M.G., Tsar’kov, A.A. et al. Study of the structure and mechanical properties of corrosion-resistant steel with a high concentration of boron at elevated temperatures. Phys. Metals Metallogr. 115, 809–813 (2014). https://doi.org/10.1134/S0031918X14080031
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DOI: https://doi.org/10.1134/S0031918X14080031