The effects of plastic deformation near the temperatures of the F → A phase transformation and of deformation-induced ferritic transformation (DIFT) on the structure and properties of microalloyed ferritic-pearlitic steels are studied. It is shown that the refinement of the structure of the steels due to the F → Atransformation during heating and due to the DIFT under plastic deformation and subsequent cooling raises the mechanical properties of the metal. Modes of hot rolling are suggested for structural ferritic-pearlitic steel 17G1S-U in order to form an ultrafine-grained structure with elevated mechanical properties.
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The study has been performed with financial support of the Russian Foundation for Basic Research within scientific project No. 16-33-60002_mol_a_dk.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 3 – 8, April, 2017.
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Matveev, M.A., Kolbasnikov, N.G. & Kononov, A.A. Refinement of the Structure of Microalloyed Steels Under Plastic Deformation Near the Temperatures of Polymorphic Transformation. Met Sci Heat Treat 59, 197–202 (2017). https://doi.org/10.1007/s11041-017-0128-7
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DOI: https://doi.org/10.1007/s11041-017-0128-7