Formation of Gradient-Foliated Structures under High-Temperature Thermomechanical Treatment and Surface Plasma Quenching of Carbon Steel
Kanaev A.T. Sarsembaeva T.E. Saidullaeva M.A.
September 2021Pleiades journals
Steel in Translation
2021#51Issue 9677 - 682 pp.
Abstract: We have studied the structure formation in the strengthened zone under high-temperature thermomechanical treatment and surface plasma quenching of carbon steel with a creation of a gradient-foliate structure under significant crushing of the surface layer. A diffusionless martensitic transformation develops in the surface zone. In the layers lying lower, austenite decays in a diffusive way with the formation of a sheet-like ferrite-carbide mixture with various degree of dispersion, which, if the cooling rate increases, results in enhancement of strength and deterioration of plastic characteristics of steel. It is noted that the formation in the surface layers of a gradient-foliated structure makes it possible to prevent a rapid transition from the martensite structure to troostite-martensite and mixed pearlite structures. This enhances contact-fatigue strength of steel and its crack resistance.
carbon steel , gradient-foliated structure , interrupted quenching , wear and crack resistance
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Seifullin Kazakh Agrotechnical University, Nur-Sultan, Kazakhstan
Seifullin Kazakh Agrotechnical University
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