PREDICTION OF STRESS-STRAIN CURVE BEHAVIOR OF A MODIFIED NIMONIC 263 SUPERALLOY

1 KODZHASPIROV Georgii
Co-authors:
1 TERENTYEV Maxim
Institution:
1 Peter the Great St.Petersburg Polytechnic University, St.Petersburg, Russian Federation, gkodzhaspirovr@gmail.com, maxteen@list.ru
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
552-555
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
20 views / 11 downloads
Abstract

The hot deformation behavior of a modified nickel-based Nimonic 263 superalloy, based on the physical simulation using torsion tests at different deformation temperatures (1200°C, 1050°C and 900°C) and strain rates (0.01, 0.1 and 1 s-1) has been studied. The flow stress curves showed an initial strain-hardening followed by a peak stress revealing the occurrence of dynamic recrystallization. Based on the data result in the hot torsion tests, equations, allowing to predict the stress-strain curves behavior under different temperature-strain rate conditions, had been derived. The obtained equations can be used for FEM-simulation of real hot deformation processes of Nimonic 263-type alloys.

Keywords: superalloy, stress-strain curve, simulation, Nimonic 263, dynamic recrystallization
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