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NĚMEC, J. KUNČICKÁ, L. OPĚLA, P. DVOŘÁK, K.
Originální název
Determining Hot Deformation Behavior and Rheology Laws of Selected Austenitic Stainless Steels
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Due to their versatile properties, austenitic stainless steels have a wide application potential, including in specific fields, such as the nuclear power industry. ChN35VT steel is a chromium-nickel-tungsten type of steel stabilized by titanium, and it is suitable for parts subjected to considerable mechanical stress at elevated temperatures. However, the available data on its deformation behavior at elevated/high temperatures is scarce. The core of the presented research was thus the experimental characterization of the deformation behavior of the ChN35VT steel under hot conditions via the determination of flow stress curves, and their correlation with microstructure development. The obtained data was further compared with data acquired for 08Ch18N10T steel, which is also known for its applicability in the nuclear power industry. The experimental results were subsequently used to determine the Hensel-Spittel rheology laws for both the steels. The ChN35VT steel exhibited notably higher flow stress values in comparison with the 08Ch18N10T steel. This difference was more significant the lower the temperature and the higher the strain rate. Considering the peak stress values, the lowest difference was similar to 8 MPa (1250 degrees C and 0.01 s(-1)), and the highest was similar to 150 MPa (850 degrees C and 10 s(-1)). These findings also corresponded to the microstructure developments-the higher the deformation temperature, the more negligible the observed differences as regards the grain size and morphology.
Klíčová slova
austenitic stainless steel; deformation behavior; Hensel-Spittel; microstructure;
Autoři
NĚMEC, J.; KUNČICKÁ, L.; OPĚLA, P.; DVOŘÁK, K.
Vydáno
18. 12. 2023
Nakladatel
MDPI
Místo
Switzerland
ISSN
2075-4701
Periodikum
Metals
Ročník
13
Číslo
11
Stát
Švýcarská konfederace
Strany od
1
Strany do
15
Strany počet
URL
https://www.mdpi.com/2075-4701/13/11/1902
Plný text v Digitální knihovně
http://hdl.handle.net/11012/245214
BibTex
@article{BUT186976, author="Josef {Němec} and Lenka {Kunčická} and Petr {Opěla} and Karel {Dvořák}", title="Determining Hot Deformation Behavior and Rheology Laws of Selected Austenitic Stainless Steels", journal="Metals", year="2023", volume="13", number="11", pages="1--15", doi="10.3390/met13111902", issn="2075-4701", url="https://www.mdpi.com/2075-4701/13/11/1902" }