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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
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" }