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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU144493" target="_blank" >RIV/00216305:26210/22:PU144493 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27230/22:10249804

Výsledek na webu

<a href="https://www.mdpi.com/2073-4352/12/3/426" target="_blank" >https://www.mdpi.com/2073-4352/12/3/426</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/cryst12030426" target="_blank" >10.3390/cryst12030426</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Crystals

ISSN

2073-4352

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

20

Strana od-do

1-20

Kód UT WoS článku

000775894500001

EID výsledku v databázi Scopus

2-s2.0-85127423454