Detail publikace

Micromechanical aspects of the effect of temperature and local plastic strain magnitude on the fracture toughness of ferrite steels

KOTRECHKO, S. KOZÁK, V. ZATSARNA, O. ZIMINA, G. STETSENKO, N. DLOUHÝ, I.

Originální název

Micromechanical aspects of the effect of temperature and local plastic strain magnitude on the fracture toughness of ferrite steels

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

The paper shows that the influence of plastic strain and temperature on the rate of crack nuclei (CN) formation is a crucial factor controlling the shape of the temperature dependence of fracture toughness and its scatter limits. Within the framework of the microscopic model described, it is explained that the dependence of the incompatibility of microplastic deformation at grain boundaries or interfaces on the value of plastic strain and temperature is the reason for the effect of these factors on the rate of CN formation. The dependencies of the CN bulk density on temperature and plastic strain are given. In the latter case, a non-monotonic change in CN density is observed. The maximum intensity of CN formation is observed when the critical value of plastic strain is reached. For ferritic structural steels, this strain is about 2%. Using reactor pressure vessel steel and cast manganese steel as examples, it is shown that not taking these effects into account in the local fracture approach leads to considerable errors in the prediction of the temperature dependence of the fracture toughness and its scatter limits.

Klíčová slova

fracture toughness; ductile-to-brittle transition; local approach to fracture; crack nuclei; micromechanism

Autoři

KOTRECHKO, S.; KOZÁK, V.; ZATSARNA, O.; ZIMINA, G.; STETSENKO, N.; DLOUHÝ, I.

Vydáno

18. 1. 2023

Nakladatel

Elsevier

Místo

Amsterdam

ISSN

2452-3216

Periodikum

Procedia Structural Integrity

Ročník

43

Číslo

1

Stát

Italská republika

Strany od

228

Strany do

233

Strany počet

6

URL

https://www.sciencedirect.com/science/article/pii/S2452321622008265

Plný text v Digitální knihovně

http://hdl.handle.net/11012/213733

BibTex

@inproceedings{BUT181511,
  author="Sergiy {Kotrechko} and Vladislav {Kozák} and Oleksandra {Zatsarna} and Galina {Zimina} and Nataliya {Stetsenko} and Ivo {Dlouhý}",
  title="Micromechanical aspects of the effect of temperature and local plastic strain magnitude on the fracture toughness of ferrite steels",
  booktitle="MSMF 10 Proceedings",
  year="2023",
  journal="Procedia Structural Integrity",
  volume="43",
  number="1",
  pages="228--233",
  publisher="Elsevier",
  address="Amsterdam",
  doi="10.1016/j.prostr.2022.12.263",
  issn="2452-3216",
  url="https://www.sciencedirect.com/science/article/pii/S2452321622008265"
}