Detail publikace

Determining Hot Deformation Behavior and Rheology Laws of Selected Austenitic Stainless Steels

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

15

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"
}