Publication detail

Microfractography of Fish-Eye Fractures in Nitrided Steel

SLÁMEČKA, K. POKLUDA, J. BONAVENTUROVÁ, K. ČELKO, L.

Original Title

Microfractography of Fish-Eye Fractures in Nitrided Steel

Type

journal article - other

Language

English

Original Abstract

The paper presents results of the micro-fractographical study of fish-eye cracks that were formed in plasma-nitrided specimens under symmetrical bending, symmetrical torsion and biaxial in-phase bending-torsion loading regimes. Analysis of the local striation field found near the inclusion in the center of the fish-eye crack together with the local roughness measurements support the hypothesis that the cracks propagate predominantly by mode I micromechanisms. Moreover, the extrapolation of the local crack growth rate curve to the overall fish-eye crack region suggests that similarly to the gigacycle fatigue, the most of the fatigue life is spent on the initiation of the interior microcrack.

Keywords

Fractography, fish-eye cracks, bending-torsion fatigue, striations, nitrided steel

Authors

SLÁMEČKA, K.; POKLUDA, J.; BONAVENTUROVÁ, K.; ČELKO, L.

RIV year

2011

Released

15. 7. 2011

Location

Brno

ISBN

0009-2770

Periodical

Chemické listy

Year of study

105

Number

S

State

Czech Republic

Pages from

721

Pages to

724

Pages count

4

BibTex

@article{BUT73471,
  author="Karel {Slámečka} and Jaroslav {Pokluda} and Kateřina {Bonaventurová} and Ladislav {Čelko}",
  title="Microfractography of Fish-Eye Fractures in Nitrided Steel",
  journal="Chemické listy",
  year="2011",
  volume="105",
  number="S",
  pages="721--724",
  issn="0009-2770"
}