Detail publikačního výsledku

Dynamic Fracture Characteristics of High-Strength Steel

KIANICOVÁ, M.; DLOUHÝ, I.; ŠANDERA, P.; HORNÍKOVÁ, J.; POKLUDA, J.

Originální název

Dynamic Fracture Characteristics of High-Strength Steel

Anglický název

Dynamic Fracture Characteristics of High-Strength Steel

Druh

Článek Scopus

Originální abstrakt

The absorbed impact energy KV and the dynamic fracture toughness KId of the low-alloyed steel OCHN3MFA were measured in the respective temperature ranges 〈–40, 90〉 and 〈–60, –20〉 °C. The values of impact energy in the range of 〈14.1, 21.3〉 J were obtained using Charpy V-notch samples after subtracting parasitic energies (friction in bearings, etc.). All these values corresponded to an extended transition region since the temperature –40 °C was still higher than the lower shelf impact-energy (shear lips present) and the temperature 90 °C was lower than the upper shelf (only 20 % of ductile morphology). Dynamic fracture toughness was determined using Charpy V-notch samples with fatigue pre-cracks. The relatedKId-values were obtained in the range〈55.8, 77.5〉 MPa.m1/2. They were found to be valid linear-elastic fracture toughness and were somewhat higher than the previously reported static KIc-values. The study revealed that OCHN3MFA steel has sufficient resistance to dynamic fracture, particularly at low temperatures

Anglický abstrakt

The absorbed impact energy KV and the dynamic fracture toughness KId of the low-alloyed steel OCHN3MFA were measured in the respective temperature ranges 〈–40, 90〉 and 〈–60, –20〉 °C. The values of impact energy in the range of 〈14.1, 21.3〉 J were obtained using Charpy V-notch samples after subtracting parasitic energies (friction in bearings, etc.). All these values corresponded to an extended transition region since the temperature –40 °C was still higher than the lower shelf impact-energy (shear lips present) and the temperature 90 °C was lower than the upper shelf (only 20 % of ductile morphology). Dynamic fracture toughness was determined using Charpy V-notch samples with fatigue pre-cracks. The relatedKId-values were obtained in the range〈55.8, 77.5〉 MPa.m1/2. They were found to be valid linear-elastic fracture toughness and were somewhat higher than the previously reported static KIc-values. The study revealed that OCHN3MFA steel has sufficient resistance to dynamic fracture, particularly at low temperatures

Klíčová slova

absorbed impact energy; dynamic fracture toughness; high-strength steel; transition range; fracture surface morphology

Klíčová slova v angličtině

absorbed impact energy; dynamic fracture toughness; high-strength steel; transition range; fracture surface morphology

Autoři

KIANICOVÁ, M.; DLOUHÝ, I.; ŠANDERA, P.; HORNÍKOVÁ, J.; POKLUDA, J.

Rok RIV

2024

Vydáno

24.03.2023

Nakladatel

Trans Tech Publications Ltd

ISSN

1012-0386

Periodikum

Defect and Diffusion Forum

Svazek

422

Číslo

1

Stát

Švýcarská konfederace

Strany od

45

Strany do

49

Strany počet

5

URL

https://www.scientific.net/DDF.422.45.pdf

BibTex

@article{BUT183139,
  author="Marta {Kianicová} and Ivo {Dlouhý} and Pavel {Šandera} and Jana {Horníková} and Jaroslav {Pokluda}",
  title="Dynamic Fracture Characteristics of High-Strength Steel",
  journal="Defect and Diffusion Forum",
  year="2023",
  volume="422",
  number="1",
  pages="45--49",
  doi="10.4028/p-psqq46",
  issn="1012-0386",
  url="https://www.scientific.net/DDF.422.45.pdf"
}