Publication detail

Characterization of Microstructural Damage and Failure Mechanisms in C45E Structural Steel under Compressive Load

KRAIŠNIK, M. ČEP, R. KOUŘIL, K. BALOŠ, S. ANTIĆ, A. MILUTINOVIĆ, M.

Original Title

Characterization of Microstructural Damage and Failure Mechanisms in C45E Structural Steel under Compressive Load

Type

journal article in Web of Science

Language

English

Original Abstract

In this paper, the microstructural damage evolution of a steel with a ferrite-pearlite microstructure (C45E) was investigated during the process of cold upsetting. The development and the accumulation of microstructural damage were analyzed in different areas of samples that were deformed at different strain levels. The scanning electron microscopy (SEM) results showed that various mechanisms of nucleation of microcavities occurred during the upsetting process. In quantitative terms, microcavities were predominantly generated in pearlite colonies due to the fracture of cementite lamellae. In addition, the mechanism of decohesion had a significant influence on the development of a macroscopic crack, since a high level of microcracks, especially at higher degrees of deformation, was observed at the ferrite/pearlite or ferrite/ferrite interfaces. It was found that the distribution of microcavities along the equatorial plane of the sample was not uniform, as the density of microcavities increased with increasing strain level. The influence of stress state, i.e., stress triaxiality, on the nucleation and distribution of microcracks, was also analyzed.

Keywords

structural steel; microstructure; damage mechanisms; microcracks; upsetting; FEM

Authors

KRAIŠNIK, M.; ČEP, R.; KOUŘIL, K.; BALOŠ, S.; ANTIĆ, A.; MILUTINOVIĆ, M.

Released

19. 3. 2022

Publisher

MDPI

Location

BASEL

ISBN

2073-4352

Periodical

Crystals

Year of study

12

Number

3

State

Swiss Confederation

Pages from

1

Pages to

20

Pages count

20

URL

https://www.mdpi.com/2073-4352/12/3/426

Full text in the Digital Library

http://hdl.handle.net/11012/204473

BibTex

@article{BUT177810,
  author="Milija {Kraišnik} and Robert {Čep} and Karel {Kouřil} and Sebastian {Baloš} and Aco {Antić} and Mladomir {Milutinović}",
  title="Characterization of Microstructural Damage and Failure Mechanisms in C45E Structural Steel under Compressive Load",
  journal="Crystals",
  year="2022",
  volume="12",
  number="3",
  pages="1--20",
  doi="10.3390/cryst12030426",
  issn="2073-4352",
  url="https://www.mdpi.com/2073-4352/12/3/426"
}