Abstract—The structure of a high-temperature nickel alloy subjected to hot plastic deformation has been studied by optical metallography and scanning electron microscopy. The compression-test results obtained in the strain-rate range from 10–3 to 10 s–1 and temperature range of 900–1140°C have been used to construct a processing map showing extreme values of the coefficient of efficiency of the mechanical energy dissipation. A correspondence between the positions of extrema on the processing map and the peculiarities of structural changes has been found.
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ACKNOWLEDGMENTS
Experimental studies were performed on the equipment of the Center of Collective Usage of Scientific Equipment “Composition, structure and properties of structural and functional materials” (National Research Center “Kurchatov Institute”—Central Research Institute of Structural Materials "Prometey”).
Funding
The work was supported by the Ministry of Science and Higher Education of the Russian Federation (project no. 14.595.21.0004, RFMEFI59517X0004).
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Translated by O. Golosova
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Barakhtin, B.K., Vasil’eva, E.A., Markova, Y.M. et al. Structural Changes of a Hot-Deformed Nickel Alloy in Mechanical Energy Dissipation Processing Maps. Phys. Metals Metallogr. 120, 853–857 (2019). https://doi.org/10.1134/S0031918X19090023
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DOI: https://doi.org/10.1134/S0031918X19090023