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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" }