Structural Changes of a Hot-Deformed Nickel Alloy in Mechanical Energy Dissipation Processing Maps


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Abstract

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.

About the authors

B. K. Barakhtin

National Research Center Kurchatov Institute, Central Research Institute of Structural Materials Prometey

Email: yulia.markova@inbox.ru
Russian Federation, St. Petersburg, 191015

E. A. Vasil’eva

National Research Center Kurchatov Institute, Central Research Institute of Structural Materials Prometey

Email: yulia.markova@inbox.ru
Russian Federation, St. Petersburg, 191015

Yu. M. Markova

National Research Center Kurchatov Institute, Central Research Institute of Structural Materials Prometey

Author for correspondence.
Email: yulia.markova@inbox.ru
Russian Federation, St. Petersburg, 191015

K. A. Okhapkin

National Research Center Kurchatov Institute, Central Research Institute of Structural Materials Prometey

Email: yulia.markova@inbox.ru
Russian Federation, St. Petersburg, 191015

S. N. Petrov

National Research Center Kurchatov Institute, Central Research Institute of Structural Materials Prometey

Email: yulia.markova@inbox.ru
Russian Federation, St. Petersburg, 191015

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