Publication result detail

Fatigue behaviour and surface relief in ODS steels

KRUML, T.; KUBĚNA, I.; POLÁK, J.

Original Title

Fatigue behaviour and surface relief in ODS steels

English Title

Fatigue behaviour and surface relief in ODS steels

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

Low cycle fatigue behaviour at room temperature of two 14Cr ferritic steels with ultrafine grains and strengthened by fine oxide dispersion is studied. The two steels differ mainly in the grain size distribution (uniform and bimodal). It is shown that the bimodal grain size distribution has a detrimental effect on the fatigue life time. The rough surface relief is formed in grains bigger than 1 micrometer in diameter. Nucleation and early growth of fatigue cracks is facilitated by the surface relief which leads to important reduction of the fatigue life.

English abstract

Low cycle fatigue behaviour at room temperature of two 14Cr ferritic steels with ultrafine grains and strengthened by fine oxide dispersion is studied. The two steels differ mainly in the grain size distribution (uniform and bimodal). It is shown that the bimodal grain size distribution has a detrimental effect on the fatigue life time. The rough surface relief is formed in grains bigger than 1 micrometer in diameter. Nucleation and early growth of fatigue cracks is facilitated by the surface relief which leads to important reduction of the fatigue life.

Keywords

fatigue; 14Cr ODS ferritic steel; life time; surface relief

Key words in English

fatigue; 14Cr ODS ferritic steel; life time; surface relief

Authors

KRUML, T.; KUBĚNA, I.; POLÁK, J.

RIV year

2012

Released

06.06.2011

ISBN

1877-7058

Periodical

Procedia Engineering

Volume

2011

Number

10

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1685

Pages to

1690

Pages count

6

BibTex

@article{BUT72714,
  author="Tomáš {Kruml} and Ivo {Kuběna} and Jaroslav {Polák}",
  title="Fatigue behaviour and surface relief in ODS steels",
  journal="Procedia Engineering",
  year="2011",
  volume="2011",
  number="10",
  pages="1685--1690"
}