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Simulation and Experimental Evaluation of Circumferential Fracture Conditions in Hot Radial–Shear Rolling

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The conditions of circumferential fracture during hot radial-shear rolling are simulated using QForm software. The fields of modified Cockroft–Latham criterion and temperature are plotted. The results of simulation were validated experimentally by rolling bars made of creep-resistant alloy. Controlled circumferential fracture was created by intensifying the self-heating by increasing the rolling speed. The fracture zone was examined metallographically. The experiment confirmed that the main cause of circumferential fracture of the workpiece during radial-shear rolling is the rapid self-heating in the fracture zone rather than the stress state and ductility of the material. These results were confirmed by examining the fracture zone with a microscope.

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Correspondence to S. P. Galkin.

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Translated from Metallurg, Vol. 64, No. 3, pp. 64–70, March, 2020.

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Galkin, S.P., Stebunov, S.A., Aleschenko, A.S. et al. Simulation and Experimental Evaluation of Circumferential Fracture Conditions in Hot Radial–Shear Rolling. Metallurgist 64, 233–241 (2020). https://doi.org/10.1007/s11015-020-00988-9

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  • DOI: https://doi.org/10.1007/s11015-020-00988-9

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