An experiment is performed for explosive convergence (collapse) of a cylindrical shell of low carbon steel with a ferrite-perlite structure. It is revealed that during ultra-rapid heating caused by high-speed deformation austenite formation occurs in an unusual sequence: first, free ferrite is converted, then pearlite. The decrease in free ferrite transformation temperature is explained by action of high pressure, as well as by varying degrees of heating steel structural constituents. An effect of barothermal quenching is observed, as a result of which a pearlite-martensite structure forms.
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Work was performed within the scope of the theme “Structure” (No. AAAA18-A18-118020190116-6) with partial support of a UrO RAN comprehensive program (project 18-10-2-39).
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 20 – 24, May, 2020.
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Zeldovich, V.I., Frolova, N.Y., Kheifets, A.E. et al. Features of Austenite Formation in Low-Carbon Steel during High Speed Heating Induced by High-Speed Deformation. Met Sci Heat Treat 62, 315–319 (2020). https://doi.org/10.1007/s11041-020-00560-x
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DOI: https://doi.org/10.1007/s11041-020-00560-x