Publication detail

Dynamic Fracture Characteristics of High-Strength Steel

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

Original Title

Dynamic Fracture Characteristics of High-Strength Steel

Type

journal article in Scopus

Language

English

Original Abstract

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

Keywords

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

Authors

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

Released

24. 3. 2023

Publisher

Trans Tech Publications Ltd

ISBN

1012-0386

Periodical

Defect and Diffusion Forum

Year of study

422

Number

1

State

Swiss Confederation

Pages from

45

Pages to

49

Pages count

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"
}